Journal of Materials Processing Technology最新文献

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Improving fatigue performance of thin-walled components via synchronous double-sided ultrasonic surface rolling process 采用同步双面超声表面轧制工艺提高薄壁件的疲劳性能
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-22 DOI: 10.1016/j.jmatprotec.2025.118775
Kaiming Zhang , Ji Wang , Huayi Cheng , Shulei Yao , Changli Liu , Chengcheng Zhang , Xueran Yu , Shuang Liu , Xiancheng Zhang , Shantung Tu
{"title":"Improving fatigue performance of thin-walled components via synchronous double-sided ultrasonic surface rolling process","authors":"Kaiming Zhang ,&nbsp;Ji Wang ,&nbsp;Huayi Cheng ,&nbsp;Shulei Yao ,&nbsp;Changli Liu ,&nbsp;Chengcheng Zhang ,&nbsp;Xueran Yu ,&nbsp;Shuang Liu ,&nbsp;Xiancheng Zhang ,&nbsp;Shantung Tu","doi":"10.1016/j.jmatprotec.2025.118775","DOIUrl":"10.1016/j.jmatprotec.2025.118775","url":null,"abstract":"<div><div>To enhance the vibration fatigue resistance of thin-walled components, surface strengthening techniques have gained significant attention in the aerospace industry. This study introduces the synchronous double-sided ultrasonic surface rolling process (SDUSRP) as a promising method for improving the fatigue resistance of thin-walled components. Experiments were conducted on specially designed specimens simulating the structure of aero-engine blade edges. Two different SDUSRP parameters, primarily differing in the ultrasonic amplitude, were applied to create distinct surface strengthening effects on the specimens. Compared to untreated specimens, those treated with SDUSRP exhibited a fatigue life extension of approximately 10–100 times in different fatigue loads. The substantial improvement in fatigue performance is attributed to the stable fine-grain layer, high amplitude compressive residual stress and their cyclic stability. Additionally, higher ultrasonic amplitude enhances grain refinement through dislocation proliferation and the formation of dislocation slip bands, leading to the fragmentation and separation of grains. The SDUSRP technique demonstrated in this study shows great potential for tailoring and adjusting residual stress and microstructure in thin-walled structures, offering a valuable complement to existing anti-fatigue manufacturing methods for such components.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118775"},"PeriodicalIF":6.7,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation on formability and fracture mechanisms of dissimilar DC05/AA5052 sheets in an integrated friction stir-assisted double-sided incremental synchronous forming-bonding process 不同DC05/AA5052板材摩擦搅拌辅助双面增量同步成形-键合成形性能及断裂机制研究
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-22 DOI: 10.1016/j.jmatprotec.2025.118787
Renhao Wu , Zaigham Saeed Toor , Man Jae SaGong , Yue Wu , Xinmei Liu , Meng Li , Hyoung Seop Kim
{"title":"Investigation on formability and fracture mechanisms of dissimilar DC05/AA5052 sheets in an integrated friction stir-assisted double-sided incremental synchronous forming-bonding process","authors":"Renhao Wu ,&nbsp;Zaigham Saeed Toor ,&nbsp;Man Jae SaGong ,&nbsp;Yue Wu ,&nbsp;Xinmei Liu ,&nbsp;Meng Li ,&nbsp;Hyoung Seop Kim","doi":"10.1016/j.jmatprotec.2025.118787","DOIUrl":"10.1016/j.jmatprotec.2025.118787","url":null,"abstract":"<div><div>Laminated aluminum alloy-steel (Al-St) sheets exhibit significant potential for use in industrial applications because of their superior mechanical and physical properties. Differences in the intrinsic mechanical properties of these different laminates cause challenges in fabrication and plastic forming. Thermally assisted mechanical joining and forming methods exhibit significant limitations in regulating the formation of Fe-Al intermetallic compounds within Al-St laminates. Cracks can easily occur at the bonding interfaces of these laminates, which severely limits their application. Therefore, a novel forming process is necessary. This study introduces an integrated friction stir-assisted double-sided incremental forming process with synchronous bonding (FS-DSIF&amp;SB) that combines bonding and deformation to fabricate truncated laminated conical components using dissimilar AA5052 and DC05 sheets. A modified fracture criterion, incorporating stress triaxiality, temperature, and strain rate, is developed and implemented using a VUSDFLD subroutine to evaluate ductile damage under diverse thermo-mechanical conditions. Experimental validation using high-temperature tensile tests and forming trials confirm the predictive accuracy of the fracture model. Damage progression reveals that the outer aluminum alloy layer experiences higher damage, leading to fracture. Optimized processing enhanced laminate's formability and variable wall angle compatibility. The findings underscore the process's high formability and demonstrate its potential applicability for multi-material systems and advanced manufacturing scenarios.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118787"},"PeriodicalIF":6.7,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kissing bond defects in inertia friction welds of IN718 alloys: Experiment and prediction IN718合金惯性摩擦焊缝中的亲和键缺陷:实验与预测
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-21 DOI: 10.1016/j.jmatprotec.2025.118786
Tianxiang Tang , Qingyu Shi , Jun Zhou , Chunbo Zhang , Wu Liang , Mengran Zhou , Gong Zhang , Gaoqiang Chen
{"title":"Kissing bond defects in inertia friction welds of IN718 alloys: Experiment and prediction","authors":"Tianxiang Tang ,&nbsp;Qingyu Shi ,&nbsp;Jun Zhou ,&nbsp;Chunbo Zhang ,&nbsp;Wu Liang ,&nbsp;Mengran Zhou ,&nbsp;Gong Zhang ,&nbsp;Gaoqiang Chen","doi":"10.1016/j.jmatprotec.2025.118786","DOIUrl":"10.1016/j.jmatprotec.2025.118786","url":null,"abstract":"<div><div>Different from many solid-state-based manufacturing processes, much less attention has been paid to kissing bond (KB) defects for inertia friction welding (IFW) despite its crucial impact on weld performance. Herein, for the first time, the KB defects in inertia friction welds are experimentally investigated, and the formation mechanism is elucidated based on well-validated numerical simulation. Microstructural analysis and tensile tests reveal the occurrence of KB defects at the periphery of an inertia friction weld of IN718 alloy rods. The KB defects appear as discontinuous polygonal voids chain in microns at the interface, leading to premature fracture along the welding interface and thus reduced ductility. To predict the formation of KB defects, a novel two-step approach, in which thermo-mechanical simulation is integrated with an analytical solid-state bonding model, is proposed. The validated thermo-mechanical simulation confirms similar temperature profiles at the interface, while the central region shows much higher compressive normal stress than the periphery. Using the thermo-mechanical history data, the material bonding behavior, i.e., how the material become bonded from separated, is predicted. The prediction indicates complete bonding across most of the interface, except at the periphery where KB defects are observed. Further discussion attributes KB defects to the insufficient interfacial compressive normal stress, providing critical insights into their formation mechanism and potential mitigation strategies. The proposed approach provides a generic methodology for analyzing the interfacial bonding behavior under highly transient thermo-mechanical condition.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118786"},"PeriodicalIF":6.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metal droplet ejection technology based on water hammer effect for additive manufacturing 基于水锤效应的增材制造金属液滴喷射技术
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-20 DOI: 10.1016/j.jmatprotec.2025.118785
Guofang Hu , Boce Xue , Yanzhen Zhang , Xiaodi Zhao , Yuyao Wu , Weiwei He , Fenglin Hao , Jianhao Zhu , Zihao Li , Dege Li , Yanqing Zhang , Mingyu Yan , Runsheng Li
{"title":"Metal droplet ejection technology based on water hammer effect for additive manufacturing","authors":"Guofang Hu ,&nbsp;Boce Xue ,&nbsp;Yanzhen Zhang ,&nbsp;Xiaodi Zhao ,&nbsp;Yuyao Wu ,&nbsp;Weiwei He ,&nbsp;Fenglin Hao ,&nbsp;Jianhao Zhu ,&nbsp;Zihao Li ,&nbsp;Dege Li ,&nbsp;Yanqing Zhang ,&nbsp;Mingyu Yan ,&nbsp;Runsheng Li","doi":"10.1016/j.jmatprotec.2025.118785","DOIUrl":"10.1016/j.jmatprotec.2025.118785","url":null,"abstract":"<div><div>Currently, in the field of molten droplet jetting for metal additive manufacturing, existing technologies such as pneumatic, piezoelectric, and magnetohydrodynamic methods face challenges in balancing device complexity, droplet ejection stability, and ejection frequency due to inherent limitations in their driving mechanisms. This study advances the traditional theories and techniques of droplet-based metal additive manufacturing by introducing a novel water hammer-based molten droplet jetting method. Through micron-scale rapid reciprocating motion of the jet tube along its axial direction, pulsed pressure is generated, enabling stable, efficient, and on-demand jetting of molten metal. The investigation systematically analyzed the effects of displacement, nozzle diameter, motion period, and liquid column height on the ejection behavior. The effects of different process parameters on pulsed pressure and jetting behavior were investigated. An increase in jet tube displacement or liquid column height, as well as a decrease in nozzle diameter, results in greater pulsed pressure, leading to higher droplet flight velocity. The additive manufacturing capabilities of this method for two-dimensional and three-dimensional structures have been validated.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118785"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive evaluation of the effect of large extrusion ratio on the microstructure and performance of Al/Al bimetallic composite tubes 大挤压比对Al/Al双金属复合管材组织和性能影响的综合评价
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-20 DOI: 10.1016/j.jmatprotec.2025.118783
Yanjun Wang , Yi Jia , Shuzhi Zhang , Shouzhen Cao , Xinlong Zhang , Wei Zhang , Changjiang Zhang , Zhaoping Hou , Jianchao Han , Tao Wang
{"title":"Comprehensive evaluation of the effect of large extrusion ratio on the microstructure and performance of Al/Al bimetallic composite tubes","authors":"Yanjun Wang ,&nbsp;Yi Jia ,&nbsp;Shuzhi Zhang ,&nbsp;Shouzhen Cao ,&nbsp;Xinlong Zhang ,&nbsp;Wei Zhang ,&nbsp;Changjiang Zhang ,&nbsp;Zhaoping Hou ,&nbsp;Jianchao Han ,&nbsp;Tao Wang","doi":"10.1016/j.jmatprotec.2025.118783","DOIUrl":"10.1016/j.jmatprotec.2025.118783","url":null,"abstract":"<div><div>Bimetallic composite tubes prepared by hot extrusion are usually assembled in parallel with the billet, which usually results in a low extrusion ratio and reduced production efficiency. In this study, Al/Al bimetallic composite tube with excellent surface quality were successfully prepared using AA6061 aluminum alloy and AA1060 aluminum alloy as the original materials and a special conical assembly form at 450°C and a large extrusion ratio of 21 by hot extrusion process. Macroscopic observation of the distribution of the two materials in the wall of the composite tube shows that the Al/Al composite tube combines well along the extrusion direction, the wall thickness of the inner and outer walls is gradient distribution along the extrusion direction, the stable extrusion stage accounts for 60 % of the total length, about 110 cm, and combines well in the circumferential direction as well. The bonding strength of the Al/Al composite tube is above 120 MPa, which is higher than the ultimate tensile strength (UTS) of the original AA1060 aluminum alloy and achieves metallurgical bonding. In addition, the UTS of the composite tube has reached the requirement of existing Al/Al composite products and has better plasticity. The microstructure near the interface of the composite tube shows no holes and inclusions on the interface, and the grains of the two materials have been refined to a certain extent, and the transmission electron microscope (TEM) results reflect that the two materials are in a coherent relationship. And the simulation of composite tube extrusion was conducted. The influence of the microstructure evolution on the mechanical properties and the bonding mechanism of the composite tube are discussed based on the microstructure evolution at the interface of the composite tube and the simulation results.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118783"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anodic dissolution behavior and microstructure preparation of nickel based superalloy in cryogenic-shielded and laser-assisted electrochemical machining 低温屏蔽和激光辅助电化学加工中镍基高温合金的阳极溶解行为和微观组织制备
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-20 DOI: 10.1016/j.jmatprotec.2025.118777
Jingtao Wang, Yuxin Wang, Xin Shi, Pengfei Ouyang, Zhaoyang Zhang, Hao Zhu, Kun Xu, Yang Liu
{"title":"Anodic dissolution behavior and microstructure preparation of nickel based superalloy in cryogenic-shielded and laser-assisted electrochemical machining","authors":"Jingtao Wang,&nbsp;Yuxin Wang,&nbsp;Xin Shi,&nbsp;Pengfei Ouyang,&nbsp;Zhaoyang Zhang,&nbsp;Hao Zhu,&nbsp;Kun Xu,&nbsp;Yang Liu","doi":"10.1016/j.jmatprotec.2025.118777","DOIUrl":"10.1016/j.jmatprotec.2025.118777","url":null,"abstract":"<div><div>Leading and trailing edges are critical components of blisks, requiring not only high profile accuracy but also “four-zero” processing—free of recast layers, heat-affected zones, micro-cracks, and stray corrosion. The high-precision “shape coordination” manufacturing of these edges has garnered significant attention in the industry. In order to achieve high quality machining of the leading and trailing edges while mitigating stray current corrosion on non-machined surfaces, an innovative cryogenic-shielded and laser-assisted electrochemical machining (CS-LA-ECM) process was proposed for the first time. First, the anodic dissolution mechanism of the CS-LA-ECM process was analyzed using open-circuit potential, potentiodynamic polarization, potentiostatic polarization, and electrochemical impedance spectroscopy. The tests revealed pronounced active, passive, and transpassive behaviors of GH4049 in the CS-LA-ECM process. The passive film formed in the CS-LA-ECM process was richer in Al<sub>2</sub>O<sub>3</sub>, MoO<sub>3</sub>, Fe<sup>2 +</sup>/Fe<sup>3+</sup> ratio, and lacked NiO and MoO<sub>2</sub>, indicating a compact structure that enhances corrosion resistance and reduces stray corrosion. Multi-physical field modeling and simulation of the CS-LA-ECM process were conducted to examine the effects of cryogenic shielding and laser-assisted on the machining characteristics. Exploratory experiments demonstrated the successful fabrication of high quality leading and trailing edges on the GH4049 workpieces using the CS-LA-ECM process. Surface analysis showed improvements of 68.3 % in profile accuracy, 15.9 % in surface roughness, and a 81.2 % reduction in stray corrosion compared to conventional ECM process. The results confirm that the CS-LA-ECM process significantly reduces stray corrosion while ensuring high quality machining of leading and trailing edges, making it a promising technique for precision manufacturing in the aerospace industry.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118777"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding the processing, microstructure, and deformation behavior of AZ31B Mg alloy fabricated by additive friction stir deposition 添加剂搅拌摩擦沉积制备AZ31B镁合金的工艺、组织和变形行为
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-20 DOI: 10.1016/j.jmatprotec.2025.118781
Hui Wang , Yidi Li , Biaobiao Yang , Jun Wang , Ruilin Lai , Zhongchang Wang , Yunping Li
{"title":"Understanding the processing, microstructure, and deformation behavior of AZ31B Mg alloy fabricated by additive friction stir deposition","authors":"Hui Wang ,&nbsp;Yidi Li ,&nbsp;Biaobiao Yang ,&nbsp;Jun Wang ,&nbsp;Ruilin Lai ,&nbsp;Zhongchang Wang ,&nbsp;Yunping Li","doi":"10.1016/j.jmatprotec.2025.118781","DOIUrl":"10.1016/j.jmatprotec.2025.118781","url":null,"abstract":"<div><div>Solid-state additive manufacturing offers significant advantages in the fabrication of magnesium (Mg) alloys. These benefits include the avoidance of metal melting, the elimination of the requirement for a protective atmosphere, and enhanced operational safety. In this study, a multilayer AZ31B Mg alloy deposit was successfully fabricated using a solid-state additive manufacturing technique known as additive friction stir deposition (AFSD). The processing parameters for the deposition of AZ31B Mg alloy were initially investigated, leading to the successful fabrication of a 36-layer AZ31B Mg alloy deposit under optimized parameters. Subsequently, the microstructural characteristics and mechanical properties of the multilayered AZ31B Mg alloy were systematically analyzed. Finally, the underlying deformation mechanisms were comprehensively examined through detailed <em>quasi-in-situ</em> electron backscatter diffraction (EBSD) analysis. The results show that the grains of the final deposits are significantly refined and have a good uniformity, with the average grain size reaching ∼20 μm, due to the dynamic recrystallization under repeated thermal-mechanical deformation. The deposited grains exhibit a strong basal texture with the c-axis of the grains parallel to the build direction (BD). The microhardness exhibits uniformity from the bottom to the top of the deposited layer due to the uniform grain size distributions and precipitates. Owing to the strong basal texture and the pole nature of extension twinning, the yield strength in different directions shows a pronounced anisotropy, whilst the ultimate tensile strength and elongation in different directions are relatively comparable except for one path with a high basal slip apparent Schmid factor. In addition, compared to Mg alloys manufactured by melting additive manufacturing techniques, the AZ31B Mg alloy prepared by solid-state AFSD in this study shows a higher mechanical strength.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118781"},"PeriodicalIF":6.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Relaxation of residual stress in aluminum alloy rings by pulsed high magnetic field: Relieving mechanisms and performance evaluation 脉冲高磁场对铝合金环残余应力的松弛:释放机制和性能评估
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-17 DOI: 10.1016/j.jmatprotec.2025.118778
Xiaoxiang Li , Xinyu Tang , Mengxian Li , Qiyuan Liu , Zhan Tuo , Quanliang Cao , Liang Li
{"title":"Relaxation of residual stress in aluminum alloy rings by pulsed high magnetic field: Relieving mechanisms and performance evaluation","authors":"Xiaoxiang Li ,&nbsp;Xinyu Tang ,&nbsp;Mengxian Li ,&nbsp;Qiyuan Liu ,&nbsp;Zhan Tuo ,&nbsp;Quanliang Cao ,&nbsp;Liang Li","doi":"10.1016/j.jmatprotec.2025.118778","DOIUrl":"10.1016/j.jmatprotec.2025.118778","url":null,"abstract":"<div><div>Residual stress is commonly present in metal components, potentially leading to structural instability and reduced strength. Thus, effective elimination of residual stress is essential in manufacturing large metal components. Traditional methods for stress relief include energy-based and mechanical approaches. However, energy-based methods are time-consuming and can weaken component strength, while mechanical methods may damage contact surfaces and cause localized stress concentrations. This paper introduces a novel technique for relaxing residual stress using pulsed high magnetic fields. The method applies a pulsed magnetic field to the ring’s inner surface, inducing a strong, non-contact Lorentz force that triggers slight plastic deformation, releasing residual stress in the elastic regions. Remarkably, the process takes only a few milliseconds. The study examines the mechanisms behind residual stress relief via pulsed magnetic fields and designs a device for stress elimination in large aluminum rings. Initial validation through bulging experiments on 6061 aluminum alloy rings (118 mm diameter) showed that the electromagnetic bulging process improves micro-deformation uniformity, promotes dislocation motion, generates sub-grain structures, and refines grains, thereby relieving stress. A large-scale electromagnetic bulging platform was then designed for 5A06 aluminum alloy rings (717 mm diameter). In-situ experiments demonstrated that a plastic deformation of 1 % eliminated up to 84.9 % of residual stress, indicating substantial stress relief. Finally, the study compared the effectiveness of stress elimination across different surfaces under various discharge bulging modes and analyzed the reasons for these differences. This method significantly enhances the efficiency and effectiveness of residual stress elimination in large aluminum alloy rings.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118778"},"PeriodicalIF":6.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Manufacture of ultra-smooth surface with low damage by elastic emission machining 用弹性发射加工制造低损伤超光滑表面
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-17 DOI: 10.1016/j.jmatprotec.2025.118780
Weihao Ma , Jiahui Li , Xinquan Zhang , Mingjun Ren , Xi Hou
{"title":"Manufacture of ultra-smooth surface with low damage by elastic emission machining","authors":"Weihao Ma ,&nbsp;Jiahui Li ,&nbsp;Xinquan Zhang ,&nbsp;Mingjun Ren ,&nbsp;Xi Hou","doi":"10.1016/j.jmatprotec.2025.118780","DOIUrl":"10.1016/j.jmatprotec.2025.118780","url":null,"abstract":"<div><div>Extreme application scenarios require atomic-level surface smoothness without subsurface damage, particularly for hard and brittle materials prone to cracks and residual stress during mechanical processing. Elastic emission machining (EEM), a non-destructive atomic-level material removal method, has gained significant attention. However, its ultra-smooth surface generation mechanism remains underexplored. This study comprehensively compares the surface morphology, subsurface damage, and material properties before and after EEM polishing from a multi perspective. EEM preferentially removes protruding defects, whereas pit-type subsurface defects with residual compressive stress require a greater material removal depth. Micron scratch experiments reveal the mechanisms of EEM in smoothing and flattening defects, demonstrating its effectiveness in eliminating micron-scale scratches and enabling the conformal polishing of submillimetre microstructure. EEM achieves ultra-smooth surfaces with roughness below 0.1 nm root mean square on fused quartz, monocrystalline silicon, and ULE. The surface and internal lattice integrity of monocrystalline silicon confirm the non-destructive polishing capability of EEM. Power spectral density calculation indicate that EEM can eliminate spatial wavelength errors in the micron to the nanometre scale. This study validates the potential of EEM in high-performance optical component manufacturing and provides valuable references for achieving non-destructive atomic-level processing.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118780"},"PeriodicalIF":6.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microstructural mechanisms and mechanical behavior of friction-stir-welded Mg alloy laminate joints 搅拌摩擦焊接镁合金层压板接头的组织机理及力学性能
IF 6.7 2区 材料科学
Journal of Materials Processing Technology Pub Date : 2025-02-17 DOI: 10.1016/j.jmatprotec.2025.118779
Junlei Zhang , Haojie Zhang , Xiang Chen , Zulai Li , Guangsheng Huang
{"title":"Microstructural mechanisms and mechanical behavior of friction-stir-welded Mg alloy laminate joints","authors":"Junlei Zhang ,&nbsp;Haojie Zhang ,&nbsp;Xiang Chen ,&nbsp;Zulai Li ,&nbsp;Guangsheng Huang","doi":"10.1016/j.jmatprotec.2025.118779","DOIUrl":"10.1016/j.jmatprotec.2025.118779","url":null,"abstract":"<div><div>Achieving reliable welding of multi-layered magnesium laminates is pivotal for advancing lightweight structural applications in energy-efficient transportation. However, the welding process and resultant joint properties of such complex laminates are issues of concern in material processing. This study aims to investigate the generic scientific principles governing the weldability and mechanical behavior of multi-layered Mg laminates using friction stir welding as a case study. An AZ31/Mg-6Zn-1Mn-2Gd/AZ31 laminate was successfully welded at 1000 rpm (rotation speed)–100 mm/min (welding speed) but not at 800 rpm–100 mm/min. The microstructural evolution, deformation behavior, and mechanical properties of the laminate joints were systematically investigated. The results indicated that both the AZ31 and Mg-6Zn-1Mn-2Gd layers in the laminate joint presented an approximately symmetrical texture distribution from the advancing side to the retreating side, with the texture intensity of the AZ31 layer higher than that of the Mg-6Zn-1Mn-2Gd layer. Tensile testing revealed strain localization, with mechanical properties (yield strength: 119 MPa, ultimate tensile strength: 211 MPa, elongation: 6.1 %) between single-material AZ31 and Mg-6Zn-1Mn-2Gd joints but worse than those of the initial laminate. The laminate joint ultimately fractured near the nugget zone interface on the advancing side. This was attributed to the fluctuation in the Schmid factor for basal slip and extension twinning, which were determined by the texture distribution. The current investigation provides insights into the correlation among the process parameters, microstructural evolution, and mechanical performance of Mg alloy laminate joints.</div></div>","PeriodicalId":367,"journal":{"name":"Journal of Materials Processing Technology","volume":"338 ","pages":"Article 118779"},"PeriodicalIF":6.7,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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