Journal of Materials Engineering and Performance最新文献_第3页

Effects of Process Parameters on Microstructure and Mechanical Properties of 6061 Aluminum Alloy in Low-Temperature SPS Diffusion Bonding 工艺参数对6061铝合金低温SPS扩散焊组织和力学性能的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-31 DOI: 10.1007/s11665-026-14546-y

Dashuang Liu, Jiaxiong Huang, Chun Li, Ping Wei, Xionghui Li, Xiaonan Wang, Lei Zhang, Laima Luo, Yue Zhao

{"title":"Effects of Process Parameters on Microstructure and Mechanical Properties of 6061 Aluminum Alloy in Low-Temperature SPS Diffusion Bonding","authors":"Dashuang Liu, Jiaxiong Huang, Chun Li, Ping Wei, Xionghui Li, Xiaonan Wang, Lei Zhang, Laima Luo, Yue Zhao","doi":"10.1007/s11665-026-14546-y","DOIUrl":"10.1007/s11665-026-14546-y","url":null,"abstract":"<div><p>In this study, high-strength diffusion bonding of 6061 aluminum alloy was successfully achieved at 480 °C using spark plasma sintering (SPS) with an Al-20Zn-10Ge interlayer. The synergistic effects of bonding temperature, pressure, and holding time on the interfacial microstructure and mechanical properties were systematically investigated. Under the optimized parameters (480 °C, 5 MPa, 20 min), the bonded joint attained a tensile strength of 147.87 MPa with a post-bonding deformation rate of only 3.32%, and a defect‑free, dense metallurgical bonding layer was formed. Ge functions through a unique “diffusion promotion‑phase regulation” synergistic mechanism: it promotes elemental diffusion and the precipitation of the Mg<sub>2</sub>Ge strengthening phase, while simultaneously inhibiting the excessive formation of the brittle β‑GeSi phase via a competitive reaction. A pressure range of 5-7 MPa ensures adequate plastic deformation and diffusion flux; however, when the pressure is increased to 7 MPa, the base metal properties deteriorate (tensile strength decreases by 6.15% and deformation rate increases by 58.73%). These findings are expected to provide new theoretical and technical insights into oxide film disruption, low‑temperature interfacial reaction control, and the fabrication of high‑performance joints in solid‑state bonding of aluminum alloys.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38697 - 38712"},"PeriodicalIF":2.6,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Mechanical Behavior in Concrete with Recycled Glass Fiber Powder Using a Finite Element Numerical Model 再生玻璃纤维粉混凝土力学性能有限元数值模型研究

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-30 DOI: 10.1007/s11665-026-14437-2

Ahmed Al-Mukhtar, Carsten Koenke

{"title":"Mechanical Behavior in Concrete with Recycled Glass Fiber Powder Using a Finite Element Numerical Model","authors":"Ahmed Al-Mukhtar, Carsten Koenke","doi":"10.1007/s11665-026-14437-2","DOIUrl":"10.1007/s11665-026-14437-2","url":null,"abstract":"<div><p>Waste management and the second-life utilization of components have attracted significant interest over the past few decades. This study examines the mechanical behavior of concrete modified with recycled wind turbine blade (RWTB) powder used as a partial supplementary material. COMSOL Multiphysics was employed to simulate the response of the modified concrete under loading, using a linear elastic material model. The model investigates the initial mechanical performance and stress distribution. Key mechanical properties have been compared with available experimental literature; however, different powder properties and preparation methods are considered. The results indicate that incorporating small percentages of RWTB powder can improve certain mechanical characteristics, such as stress distribution efficiency, stiffness, and elastic strain energy capacity. The mechanical behavior as an indicative response has been presented. This trend confirms the existence of an optimal powder content that enhances structural performance. In addition, the work underscores the environmental value of integrating RWTB powder into concrete, supporting waste reduction and circular economy practices. The non-linear relationship between the related parameters has been confirmed.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38953 - 38965"},"PeriodicalIF":2.6,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11665-026-14437-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on Corrosion-Protective Performance of Bioinspired Superhydrophobic Micro-/Nanostructure 仿生超疏水微/纳米结构的防腐性能研究

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-29 DOI: 10.1007/s11665-026-14371-3

Wenqian Zhang, Fei Xie, Hui Zhao, Hongtao Dong, Po Zhang, Zhe Ding, Xizhao Wang

{"title":"Investigation on Corrosion-Protective Performance of Bioinspired Superhydrophobic Micro-/Nanostructure","authors":"Wenqian Zhang, Fei Xie, Hui Zhao, Hongtao Dong, Po Zhang, Zhe Ding, Xizhao Wang","doi":"10.1007/s11665-026-14371-3","DOIUrl":"10.1007/s11665-026-14371-3","url":null,"abstract":"<div><p>Austenitic stainless steel faces significant risks of localized corrosion in chloride-containing media, while existing surface protection technologies exhibit limitations in practical applications. Inspired by biomimetic principles, this study employs femtosecond laser micromachining to construct controllable micro-/nanocomposite structures on the surface of 316L stainless steel, combined with heat treatment modification to achieve a superhydrophobic surface with contact angles consistently exceeding 160°, up to 166°. Electrochemical tests conducted in a 3.5 wt.% NaCl solution at 60 °C demonstrate that the superhydrophobic surface exhibits a positive shift in corrosion potential (from − 0.501 to − 0.215 V) and a significant increase in charge transfer resistance (from 1.31 × 104 to 2.93 × 105 Ω), corresponding to a corrosion protection efficiency of 95.5% based on <i>R</i><sub><i>ct</i></sub>. Even at elevated temperatures, the micro-/nanostructure retains partial gas-film protection, effectively mitigating corrosion. Theoretical analysis establishes a partial-wetting model for the micro-/nanocomposite structure, revealing the quantitative relationship between structural parameters and air film stability. This elucidates the physical mechanism by which surface roughness characteristics delay interfacial mass transfer to achieve corrosion protection. The research provides a new technological approach for the functional design and protection of metal surfaces in harsh corrosive environments.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38734 - 38746"},"PeriodicalIF":2.6,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Effect of Extrusion on Microstructures and Mechanical Properties of Mg-Ca and Mg-Zn-Ca Alloys 挤压对Mg-Ca和Mg-Zn-Ca合金组织和力学性能的影响

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-28 DOI: 10.1007/s11665-026-14226-x

Shengxuan Xu, Xiaonan Cui, Hucheng Pan, Zhihao Zeng, Zhilei Li, Xiangzhong Zhao, Gaowu Qin

{"title":"Effect of Extrusion on Microstructures and Mechanical Properties of Mg-Ca and Mg-Zn-Ca Alloys","authors":"Shengxuan Xu, Xiaonan Cui, Hucheng Pan, Zhihao Zeng, Zhilei Li, Xiangzhong Zhao, Gaowu Qin","doi":"10.1007/s11665-026-14226-x","DOIUrl":"10.1007/s11665-026-14226-x","url":null,"abstract":"<div><p>In this study, the low-cost Mg-Ca binary alloy and also the Mg-Zn-Ca ternary alloy were developed, and the high strength of > 250 MPa and high ductility of > 10% are obtained via the conventional extrusion processing. For the typical Mg-0.4 Ca binary alloy (wt.%, named as X4 sample), the as-extruded sample exhibits yield strength (YS) of 293 MPa, ultimate tensile strength (UTS) of 298 MPa and elongation (EL) of 15.9%. For the typical Mg-1.0Zn-0.4Ca ternary alloy (wt.%, named as ZX10 sample), the as-extruded sample exhibits an optimal combination of mechanical properties: with YS of 260 MPa, UTS of 286 MPa, and EL of 24.1%. Microstructural analysis indicates that all the as-extruded alloys exhibit a typical bimodal microstructure. Compared with the un-dynamic-recrystallized (un-DRXed) regions, the dynamic-recrystallized (DRXed) regions show a weaker texture and higher basal-slip Schmid factors. All the as-extruded alloys contain abundant micron- and nano-sized Mg₂Ca phases. In addition, the Ca<sub>2</sub>Mg<sub>6</sub>Zn<sub>2</sub> phase was identified in the as-extruded ZX10 sample, and its recrystallization fraction increased to ~ 60.9%. The superior strength-ductility synergy in the as-extruded ZX10 sample is attributed to the enhancement in recrystallization fraction, together with grain refinement, precipitation strengthening, and texture modification. This study provides valuable insights into microstructural control strategies for achieving high strength-ductility synergy in low-cost biomedical magnesium alloys.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38906 - 38914"},"PeriodicalIF":2.6,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Research on the Weldability of High-Strength Steel Plate in the Water Transmission System of Pumped Storage Power Stations 抽水蓄能电站输水系统高强度钢板可焊性研究

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-27 DOI: 10.1007/s11665-026-14518-2

Qiang Zhao, Tianyu Zhang, Kangli Li, Huifang Sun, Yuan Li, Keyuan Wang, Kenan Du, Qingyuan Song

{"title":"Research on the Weldability of High-Strength Steel Plate in the Water Transmission System of Pumped Storage Power Stations","authors":"Qiang Zhao, Tianyu Zhang, Kangli Li, Huifang Sun, Yuan Li, Keyuan Wang, Kenan Du, Qingyuan Song","doi":"10.1007/s11665-026-14518-2","DOIUrl":"10.1007/s11665-026-14518-2","url":null,"abstract":"<div><p>This study investigates the weldability of high-strength steel plates used in the water transmission system of pumped storage power stations. The phase transformation and welding performance of 1000 MPa grade steel plates during heating and cooling were examined via thermal simulation tests, focusing on the effects of simulated heat-affected zone continuous cooling transformation (SH-CCT) diagram, preheating temperature, and welding heat input on the properties of the heat-affected zone (HAZ). The test results show that the critical transformation temperatures Ac1 and Ac3 of the steel plate are 679 and 815 °C, respectively, and its SH-CCT diagram consists of three transformation zones: martensite, bainitic ferrite, and granular bainite. At a cooling rate of 0.5 °C/s, the matrix is granular bainite, but the coarse-grained zone exhibits significant softening, necessitating heat input control. As the preheating temperature increases, the hardness of the coarse-grained zone gradually decreases, and preheating to a minimum temperature of 90-120 °C is necessary to prevent cold cracks. Considering welding efficiency and joint performance, the optimal heat input for a single thermal cycle is 20-25 kJ/cm. Under this condition, the four sub-zones of the coarse-grained HAZ (CGHAZ) after the second thermal cycle meet service requirements. This study provides reliable theoretical and technical support for developing welding processes for 1000 MPa grade steel plates in the water transmission systems of pumped storage power station.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38799 - 38811"},"PeriodicalIF":2.6,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Mechanical Property and Corrosion Resistance of the Newly Developed Mg-Gd-Sn-(In)-Based Alloys 新研制的Mg-Gd-Sn-(In)基合金的力学性能和耐蚀性

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-25 DOI: 10.1007/s11665-026-14045-0

Xiangzhong Zhao, Hucheng Pan, Sheng Wang, Zhen Pan, Zhihao Zeng, Zhilei Li, Xiaonan Cui, Shengxuan Xu, Gaowu Qin

{"title":"Mechanical Property and Corrosion Resistance of the Newly Developed Mg-Gd-Sn-(In)-Based Alloys","authors":"Xiangzhong Zhao, Hucheng Pan, Sheng Wang, Zhen Pan, Zhihao Zeng, Zhilei Li, Xiaonan Cui, Shengxuan Xu, Gaowu Qin","doi":"10.1007/s11665-026-14045-0","DOIUrl":"10.1007/s11665-026-14045-0","url":null,"abstract":"<div><p>In this work, the microstructure, mechanical property and corrosion behavior of Mg-8Gd-0.1Sn (wt.%) and Mg-8Gd-0.1Sn-0.15In (wt.%) samples were investigated. The results show that both Mg alloys exhibit bimodal grain structure, including the fine dynamically recrystallized (DRXed) grains and coarse un-recrystallized (un-DRXed) grains with strong fiber texture. The yield strength (YS) and ultimate tensile strength (UTS) of the tensile Mg-8Gd-0.1Sn alloy at room temperature are ~ 253 MPa and ~ 282 MPa, respectively, and the elongation (EL) is ~ 2.7%. With the addition of the In element, the DRXed grains proportion of Mg-Gd-Sn-In alloy decreases and the DRXed grain size is refined. The intensity of < 10 <span>(overline{1})</span> 0 > // extrusion direction (ED) texture is enhanced, and the number density of the Mg-Gd-Sn phases is increased. The room temperature YS and UTS values of Mg-Gd-Sn-In sample are increased to ~ 279 MPa and ~ 310 MPa, respectively, and the EL is increased to ~ 3.7%. The corrosion rate decreases from 0.84 mm/y in the Mg-Gd-Sn alloy to the 0.69 mm/y in the Mg-Gd-Sn-In alloy. The improvement of corrosion resistance is related to the addition of In element, which makes the corrosion film denser and strengthens the corrosion barrier effect of precipitated phase. The relevant results can guide the design and fabrication of new corrosion resistant and high-strength Mg alloys.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38882 - 38890"},"PeriodicalIF":2.6,"publicationDate":"2026-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Research on Surface Quality of YAG Crystal During Ultrasonic Vibration Grinding 超声振动磨削YAG晶体表面质量研究

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-24 DOI: 10.1007/s11665-026-14469-8

Yu Chen, Dong Wang, Jinshuang Yang, Jinxing Kong, Dongxing Du, Zhaocheng Wei

{"title":"Research on Surface Quality of YAG Crystal During Ultrasonic Vibration Grinding","authors":"Yu Chen, Dong Wang, Jinshuang Yang, Jinxing Kong, Dongxing Du, Zhaocheng Wei","doi":"10.1007/s11665-026-14469-8","DOIUrl":"10.1007/s11665-026-14469-8","url":null,"abstract":"<div><p>Low-damage grinding of Nd:YAG crystals is essential for high-efficiency and high-quality fabrication of optical components. This study experimentally investigates the effects of ultrasonic vibration-assisted grinding parameters on surface morphology and subsurface damage depth of Nd:YAG crystals, and proposes a subsurface damage detection method based on metallographic mounting. The results show that axial ultrasonic vibration promotes surface micro-fracture and suppresses large-scale material spallation. Under optimized parameters, the maximum subsurface damage depth is reduced by up to 21.7%, and the axial grinding force is lowered by up to 86.7%, significantly improving surface and subsurface machining quality. Subsurface damage depth and grinding force increase with increasing feed rate and abrasive grain size, while decreasing with increasing ultrasonic amplitude and spindle speed. This study provides a theoretical and experimental basis for low-damage, high-efficiency grinding of Nd:YAG crystals and offers practical guidance for precision machining of hard, brittle optical materials.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38765 - 38780"},"PeriodicalIF":2.6,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Thin-Walled Part Fabricated by Cold Metal Transition Plus Pulse Wire Arc Directed Energy Deposition 冷金属转变+脉冲电弧定向能沉积AZ31镁合金薄壁件的组织与力学性能

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-24 DOI: 10.1007/s11665-026-14255-6

Qifei Zhang, Zhonghua Li, Bin Liu, Pengfei Zhang, Yi Zhang, He Gong, Runkun Zhang, Peikang Bai

{"title":"Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Thin-Walled Part Fabricated by Cold Metal Transition Plus Pulse Wire Arc Directed Energy Deposition","authors":"Qifei Zhang, Zhonghua Li, Bin Liu, Pengfei Zhang, Yi Zhang, He Gong, Runkun Zhang, Peikang Bai","doi":"10.1007/s11665-026-14255-6","DOIUrl":"10.1007/s11665-026-14255-6","url":null,"abstract":"<div><p>Magnesium alloys hold significant potential for lightweight applications in aerospace, automotive, and other sectors, owing to their low density, high specific strength, and excellent processability. However, these alloys are prone to oxidation at elevated temperatures, exhibit high susceptibility to thermal cracking, and possess poor plastic forming capacity due to their hexagonal close-packed (HCP) crystal structure. These inherent characteristics impose stringent requirements on process control during additive manufacturing. In this study, single-pass multi-layer AZ31 magnesium alloy thin-walled parts were successfully fabricated via wire arc directed energy deposition (WA-DED) technology. The relationship between microstructure and mechanical properties at different deposition heights was systematically investigated. The results demonstrate that the microstructure of the thin-walled components, subjected to multiple thermal cycles, exhibits a layered distribution and consists entirely of equiaxed grains. All microstructures are composed of <i>α</i>-Mg, <i>η</i>-Al<sub>8</sub>Mn<sub>5</sub>, and <i>β</i>-Mg<sub>17</sub>Al<sub>12</sub> phases. From the bottom to the top of the part, its tensile strength and elongation at break gradually decrease in the travelling direction. It is notable that there is no significant difference in mechanical properties between the travelling direction (TD) and the building direction (BD), indicating that it has excellent isotropic characteristics.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38891 - 38905"},"PeriodicalIF":2.6,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Stress Corrosion Resistance of Geopolymer Anticorrosive Coating in Chloride Saline Soil Environment 地聚合物防腐涂料在氯化物盐渍土环境中的抗应力腐蚀性能

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-23 DOI: 10.1007/s11665-026-14356-2

Xiang Qiu, Zihao Liu, Zhuo Jia, Jingcheng Chen, Xiaoming Fan, Yixiang Yin, Runxing Zhang

{"title":"Stress Corrosion Resistance of Geopolymer Anticorrosive Coating in Chloride Saline Soil Environment","authors":"Xiang Qiu, Zihao Liu, Zhuo Jia, Jingcheng Chen, Xiaoming Fan, Yixiang Yin, Runxing Zhang","doi":"10.1007/s11665-026-14356-2","DOIUrl":"10.1007/s11665-026-14356-2","url":null,"abstract":"<div><p>The bearing capacity and service life of anchor bars are significantly diminished in chloride saline soil environments due to the occurrence of stress corrosion cracking. In addition, the existing anticorrosive coating materials have problems such as insufficient stress corrosion resistance, complex process flow and poor environmental protection. To address these issues, this study developed a geopolymer anticorrosive coating that can improve the stress corrosion resistance of anchor bars. Through laboratory testing, in the geopolymer anticorrosive coating, the optimum content of sodium hydroxide was 8.97%, the optimum content of asphalt was 2.05%, the optimum mesh of metakaolin was 1250 mesh, and the optimum particle size of titanium dioxide was 5 nm. Analysis via SEM and EDS revealed that the geopolymer anticorrosive coating facilitated the formation of a dense, continuous, and stable passivation film, primarily composed of Fe<sub>2</sub>O<sub>3</sub>, on the steel bar surface. This passivation film, in conjunction with the geopolymer coating itself, establishes a dual protective barrier. This synergistic system effectively impedes the ingress and corrosive attack of chloride ions on the underlying steel substrate. After 240 h accelerated corrosion in 6 mc/% (Saline soil ratio) chloride saline soil corrosion solution, the yield and ultimate strengths of the geopolymer-anticorrosive-coated steel bar increased by 18.4% and 19.3%, respectively, compared to those coated with epoxy asphalt paint. This result demonstrates the superior efficacy of the geopolymer coating in inhibiting stress corrosion cracking of reinforcing steel. Consequently, these findings offer valuable insights for enhancing the corrosion protection of slope anchor rods.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38594 - 38608"},"PeriodicalIF":2.6,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Investigations of Microstructural and Texture Evolution in Friction Stir-Processed 6061-O Al Alloy 摩擦搅拌6061-O铝合金组织与织构演变研究

IF 2.6 4区材料科学

Journal of Materials Engineering and Performance Pub Date : 2026-07-23 DOI: 10.1007/s11665-026-14584-6

M Y Nowsath Begam, R. Balasundaram

{"title":"Investigations of Microstructural and Texture Evolution in Friction Stir-Processed 6061-O Al Alloy","authors":"M Y Nowsath Begam, R. Balasundaram","doi":"10.1007/s11665-026-14584-6","DOIUrl":"10.1007/s11665-026-14584-6","url":null,"abstract":"<div><p>The present work investigates the enhancement of mechanical properties and microstructural evolution of 6061-O Al alloy subjected to friction stir processing (FSP) using a tungsten carbide (WC) tool. FSP was performed on a vertical CNC milling machine (KODI) with processing factors of tool rotational speeds (700, 1000, and 1300 rpm), table travel speeds (25, 45, and 65 mm/min), and the number of passes (1, 2, and 3). The experimental work employed the Taguchi Orthogonal L27 design for an investigation. To study the microstructural characterization, optical microscopy (OM), x-ray diffraction (XRD) and electron backscatter diffraction (EBSD) were carried out. XRD patterns indicated progressive peak broadening and a slight shift of 1.15% from the base material, demonstrating asymmetry and lattice strain in the processed region. EBSD demonstrated grain refinement and texture evolution modifications in the stir zone, with a decrease in Grain Orientation Spread (GOS) and kernel average misorientation (KAM), which indicates dynamic recrystallization. Microhardness testing revealed a significant increase in hardness at the stir zone with a peak value of 63 HV<sub>0.3</sub>, and its 34% increased to the base material observed at a combination of 1000 rpm and 25 mm/min during the third pass, attributed to refined grains and strain hardening effects The texture index (TI) decreased from 13.94 to 3.61 after the third pass FSP, indicating a weakening of grain orientation and crystallographic texture, confirming a more isotropic microstructure. ANOVA showed that the number of passes contributed ≈ 59% to tensile strength improvement, and the regression model (<i>R</i><sup>2</sup> = 98.7%) predicted UTS with < 5% error, confirming high reliability in optimizing FSP parameters. These findings demonstrate that FSP is an efficient method for tailoring the microstructure and enhancing the mechanical performance of 6061-O alloys.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 Focus—Space","pages":"38812 - 38836"},"PeriodicalIF":2.6,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149214622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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