Liwei Guo, Zhiyu Hu, Xiaohui Zhou, Zhuoming Tan, Fuyun Liu, Jianhui Su, Xiaohui Han, Caiwang Tan
{"title":"Microstructural Evolution and Mechanical Property Enhancement in Laser-Arc Hybrid Welded Joints of High-Strength Aluminum Alloy via Zirconium Microalloying","authors":"Liwei Guo, Zhiyu Hu, Xiaohui Zhou, Zhuoming Tan, Fuyun Liu, Jianhui Su, Xiaohui Han, Caiwang Tan","doi":"10.1007/s11665-025-12817-8","DOIUrl":"10.1007/s11665-025-12817-8","url":null,"abstract":"<div><p>In this study, different contents of zirconium were added to the laser-arc hybrid welded joint to improve the mechanical properties of high-strength aluminum alloy welds. The effects of the zirconium element on the microstructure and mechanical properties of the weld joints were analyzed. The results indicated that the grains were refined and the grain morphology was transformed from dendritic to cellular grain structures in the joint with zirconium addition. Additionally, the precipitation phase content decreased, indicating that more strengthening elements were dissolved in the α-Al matrix. The improvement in weld mechanical properties was attributed to three factors: the transformation of grain morphology, grain refinement strengthening, and solid solution strengthening. The maximum tensile strength and elongation of the welded joint with 0.4 wt.% zirconium addition reached 384 MPa and 4.2%, which were improved by 22 and 20% compared to the joint without zirconium addition (313 MPa, 3.5%). Meanwhile, the average microhardness increased from 95 to 115 HV, resulting in a 21% increase. In the fracture surface with zirconium, the cleavage planes disappeared and the depth of the dimples increased, suggesting the ductile fracture mode in the weld joint with zirconium addition. This study demonstrated a method to improve the microstructure homogeneity and mechanical properties for high-strength aluminum alloy joints and offered guidance for microstructure evolution and mechanical performance enhancement.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 17","pages":"16621 - 16632"},"PeriodicalIF":2.0,"publicationDate":"2025-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829816","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}
S. O. Rogachev, V. A. Andreev, E. A. Naumova, E. A. Borozdina, R. D. Karelin, V. S. Komarov, N. Yu. Tabachkova, S. A. Bondareva
{"title":"Effect of Severe Plastic Deformations on the Microstructure and Strength–Ductility Balance of a Hypoeutectic Al-Ca-Ce-Based Alloy","authors":"S. O. Rogachev, V. A. Andreev, E. A. Naumova, E. A. Borozdina, R. D. Karelin, V. S. Komarov, N. Yu. Tabachkova, S. A. Bondareva","doi":"10.1007/s11665-025-12863-2","DOIUrl":"10.1007/s11665-025-12863-2","url":null,"abstract":"<div><p>A comparative analysis of the effects of ECAP and HPT on the microstructure and its relationship with the strength–ductility balance of the hypoeutectic Al-3Ca-3Ce alloy (wt.%) was performed. HPT was carried out at room temperature through three turns, and ECAP was carried out at a temperature of 200 °C through four passes. Both ECAP and HPT improved the strength–ductility balance of the alloy. The best strength–ductility balance was achieved after HPT: The yield strength, the ultimate tensile strength, and the relative elongation were 418, 529 MPa, and 17%, respectively, which is 5.7, 3.7, and 1.5 times higher than in as-cast state. The strength after ECAP is 2.3-2.8 times lower, and the relative elongation is two times lower than after HPT. The difference in the mechanical properties of the alloy after ECAP and HPT was due to its different microstructure. During HPT, a nano- and sub-microcrystalline structure was formed with a predominance of high-angle misorientations, and the eutectic particles were crushed to a nanosize. The alloy after ECAP was characterized by a heterogeneous structure, namely, the areas of fine-crystalline structure with a predominance of high-angle boundaries and the areas of sub-microcrystalline structure with a predominance of low-angle boundaries and the presence of crushed particles. The alloy in all conditions was characterized by good electrical conductivity, amounting to 44-47% IACS.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 17","pages":"16910 - 16922"},"PeriodicalIF":2.0,"publicationDate":"2025-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829814","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}
{"title":"Research on the Coordinated Optimization of Frictional Properties of Titanium Alloy Artificial Joints by Bionic Textures and Composite Coatings","authors":"Zihao Liu, Xiaoliang Shi, Haobing Hu, Xiyao Liu, Chaohua Wu","doi":"10.1007/s11665-025-12830-x","DOIUrl":"10.1007/s11665-025-12830-x","url":null,"abstract":"<div><p>The factors related to wear in the failure of artificial joints account for 14% to 33%. Among them, the Ti-5Al-4 V titanium alloy becomes the optimization focus due to its high friction coefficient (average of 0.48 for the matrix) and insufficient wear resistance. This study innovatively integrates the biomimetic V-shaped texture design of shark scales and the PTFE–MoS<sub>2</sub> composite coating technology to systematically enhance its service performance through a multi-scale collaborative mechanism. Through laser marking technology, V-shaped textures are constructed on the surface of the Ti-5Al-4 V matrix, and a PTFE solution is combined with a 15% mass fraction of MoS<sub>2</sub> powder, which is coated on the textured surface and then solidified at high temperature to form a biocompatible coating. This study confirms that the collaborative design of the biomimetic V-shaped texture and the PTFE–MoS<sub>2</sub>-15% coating can achieve a significant effect of reducing the friction coefficient by more than 64%, the wear amount by more than 21%, and the stress concentration by 79%, providing a new paradigm for extending the life span of artificial joints.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 17","pages":"16494 - 16507"},"PeriodicalIF":2.0,"publicationDate":"2025-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829817","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}
Selvakumar Duraisamy, P. Sathiya, R. Vaira Vignesh
{"title":"The Effect of Processing Environment on the Microstructure, Texture, and Sacrificial Anodic Performance of Mg-1Er-1Pr Alloy Processed by Friction Stir Processing","authors":"Selvakumar Duraisamy, P. Sathiya, R. Vaira Vignesh","doi":"10.1007/s11665-025-12789-9","DOIUrl":"10.1007/s11665-025-12789-9","url":null,"abstract":"<div><p>The present study investigated the effects of friction stir processing in the water environment on the microstructure and corrosion characteristics of the Mg-1Er-1Pr alloy. This study introduces a novel technique by forming fine-grained microstructures to enhance the corrosion resistance and anodic performance of the friction stir-processed Mg-1Er-1Pr alloys in an aqueous environment. The UW-FSP was performed to reduce the grain size from ~ 243 to ~ 8.11 µm. The detailed characterization of phase evolution, microhardness, corrosion susceptibility, and corrosion kinetics was studied. The average microhardness of the stir zone increased approximately 60 HV compared to the base. The results demonstrated a decrease in anodic performance and an increase in anodic consumption rate compared to the base alloy. The anodic efficiency for the specimen UW-FSP was determined to be below 20%, indicating insufficient control of the anodic reaction.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 16","pages":"15881 - 15899"},"PeriodicalIF":2.0,"publicationDate":"2025-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147756004","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}
Omid Hedayati, Mohammad Farvizi, Mohammad Reza Rahimipour, Milad Bahamirian
{"title":"Effect of Rare-Earth (RE) Cation Size on Phase Stability and Grain Growth of RE2Zr2O7 (RE = La, Gd, Yb, and Y) at 1100, 1200, and 1300 °C","authors":"Omid Hedayati, Mohammad Farvizi, Mohammad Reza Rahimipour, Milad Bahamirian","doi":"10.1007/s11665-025-12819-6","DOIUrl":"10.1007/s11665-025-12819-6","url":null,"abstract":"<div><p>This study investigates the effect of rare-earth (RE) cation size on phase stability and grain growth behavior in RE<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> zirconates (RE = La<sup>3+</sup>, Gd<sup>3+</sup>, Yb<sup>3+</sup>, and Y<sup>3+</sup>) synthesized via coprecipitation and subjected to thermal treatments at 1100, 1200, and 1300 °C for up to 50 h. High-temperature x-ray diffraction (HT-XRD) and Raman spectroscopy reveal that the crystallization onset temperature increases with the size of the RE cation, occurring at 700 °C for YbZO and YZO, 800 °C for GdZO, and 900 °C for LaZO. Larger RE cations favor formation and stability of the ordered pyrochlore structure, while smaller cations promote the defect fluorite structure at lower temperatures. Heat treatment induces a gradual phase transition from defect fluorite to pyrochlore, with the cation order parameter remaining consistently high in LaZO (<i>Φ</i><sub><i>C</i></sub> = 1), while increasing significantly in the other compositions after 50 h at 1300 °C—from 0.41 to 0.97 in GdZO, 0 to 0.73 in YbZO, and 0 to 0.33 in YZO. FESEM analysis shows grain growth from 72 to 134 nm in LaZO, 47 to 116 nm in GdZO, 33 to 112 nm in YbZO, and 26 to 123 nm in YZO after 50 h at 1300 °C, with smaller cation samples exhibiting faster growth due to lower activation energies. These findings demonstrate that RE cation size critically controls phase stability and microstructural evolution, providing a basis for optimizing thermal barrier coatings with enhanced sintering resistance and thermal performance.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 17","pages":"16520 - 16536"},"PeriodicalIF":2.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829860","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}
Ruijun Gao, Chongchao Sun, Laidong Song, Xiaoqin Yin, Hongyu Wang
{"title":"Effect of B Addition on Wear Resistance of Fe-Mn-Si-Cr-Ni Alloys Fabricated by Additive Manufacturing","authors":"Ruijun Gao, Chongchao Sun, Laidong Song, Xiaoqin Yin, Hongyu Wang","doi":"10.1007/s11665-025-12850-7","DOIUrl":"10.1007/s11665-025-12850-7","url":null,"abstract":"<div><p>Additive manufacturing Fe-Mn-Si-Cr-Ni alloys exhibit promising potential to replace traditional Cr-Ni stainless steels in applications requiring corrosion resistance and wear resistance. In this work, five types of Fe-17Mn-6Si-9Cr-5Ni alloys with varying B content (0-0.5 wt.%) were fabricated via laser metal deposition, and their wear resistance under oil-lubricated conditions was investigated. Results showed that the alloy with 0.5 wt.% B addition possesses the best wear resistance, which volumetric wear rate reduced to 19.4% of that of the B-free alloy. The analysis revealed that the enhancement of wear resistance in additive manufacturing Fe-Mn-Si-Cr-Ni alloys due to B addition is not only attributed to increased hardness, but also extends to the promotion of friction-reducing and anti-wear characteristics inherent to Fe-Mn-Si-Cr-Ni alloys.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 17","pages":"16563 - 16571"},"PeriodicalIF":2.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829858","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}
Lei Shi, Fengjiao Guo, Shuai Zhao, Liming Lei, Jinjiang Yu, Xiaofeng Sun
{"title":"Coarsening Behaviors of γ′ Particles in a Co-Al-W-Based Single-Crystal Alloy","authors":"Lei Shi, Fengjiao Guo, Shuai Zhao, Liming Lei, Jinjiang Yu, Xiaofeng Sun","doi":"10.1007/s11665-025-12202-5","DOIUrl":"10.1007/s11665-025-12202-5","url":null,"abstract":"<div><p>This study explores the evolution of γ′ precipitates in a Co-10Al-5W superalloy when subjected to temperatures of 900, 950 and 1000 °C. The changes in shape, size and distribution of these precipitates were systematically analyzed using electron microscopy. Results indicate that the γ′ precipitates exhibit a cubic morphology and tend to coarsen progressively as temperature and aging duration increase. The coarsening kinetics were assessed through diffusion-based activation energy calculations, following the Lifshitz–Slyozov–Wagner theory. It was determined that the activation energy required for γ′ precipitate coarsening is 272 kJ mol<sup>−1</sup>, and Al diffusion in the γ matrix plays a crucial role in this process. Additionally, the γ/γ′ interfacial energy at 1000 °C was found to be 86 mJ/m<sup>2</sup>. These findings contribute to the advancement of Co-based superalloys by providing essential insights into their thermal stability and high-temperature performance optimization.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 9","pages":"8178 - 8186"},"PeriodicalIF":2.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147363252","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}
{"title":"Microstructure Evolution of 6061 Aluminum Alloy Sheet Produced by CARB and Subsequent Aging Treatment","authors":"Ling Ou, Guan-hong Li, Lin-yan Li, Cai-he Fan, Jun-wei Liu, Jian-jun Yang, Zai-jun Su, Yu-jie Zhao, Wu-dan Ma, Da Gao, Si-qi Wu","doi":"10.1007/s11665-025-11663-y","DOIUrl":"10.1007/s11665-025-11663-y","url":null,"abstract":"<div><p>In this study, an ultrafine-grained 6061 alloy sheet was fabricated through cross accumulative roll bonding (CARB) and subsequent aging treatment. As the number of passes increases, the dislocation density rises, and the maximum density of the Brass {110}〈112〉 component also increases. Moreover, the grains are gradually refined. These phenomena are beneficial for enhancing the strength of the 6061 alloy sheet. After undergoing peak aging at 100 °C for 26 h, the tensile strength of the CARB specimen is further elevated to 464 MPa, accompanied by a slight decrease in elongation. The strength increment of the specimen aged at 100 °C can be attributed to the formation of nano-precipitated phases. In contrast, for specimens aged at higher temperatures, the significant decline in both strength and elongation is predominantly caused by the coarsening of the grain size. This clearly indicates that the aging temperature exerts a crucial influence on the mechanical properties of the CARB-processed 6061 alloy sheet, with the formation of nano-precipitates at lower temperatures enhancing strength and grain coarsening at higher temperatures deteriorating both strength and ductility. </p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 5","pages":"4103 - 4114"},"PeriodicalIF":2.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342629","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}
Nadezhda Polekhina, Valeria Osipova, Sergey Akkuzin, Igor Litovchenko, Kseniya Spiridonova, Vyacheslav Chernov, Maria Leontyeva-Smirnova
{"title":"Effect of Long-Term Aging at 580 °C on Microstructure and Mechanical Properties of 12% Chromium Heat-Resistant Ferritic–Martensitic Steel","authors":"Nadezhda Polekhina, Valeria Osipova, Sergey Akkuzin, Igor Litovchenko, Kseniya Spiridonova, Vyacheslav Chernov, Maria Leontyeva-Smirnova","doi":"10.1007/s11665-025-12811-0","DOIUrl":"10.1007/s11665-025-12811-0","url":null,"abstract":"<p>The effect of long-term (1000-5000 h) aging at 580 °C on the microstructure and mechanical properties of 12% Cr ferritic–martensitic steel 16Cr12MnWSiVNbB (EP-823-Sh type) is studied. Steel aging results in the following structural changes in comparison with the initial state: lower dislocation density and fewer crystal lattice microdistortions due to polygonization and larger number density and volume fraction of the second-phase particles. After 5000 h of aging, finely dispersed precipitates of the Laves phase (Fe, Cr)<sub>2</sub>(Mo, W) heterogeneously nucleate at the grain boundaries and the M<sub>23</sub>C<sub>6</sub> carbides. Aging causes depletion of the matrix in Mo, which diffuses into the M<sub>23</sub>C<sub>6</sub> carbides (after 1000 h) and Laves phase particles (after 5000 h). It is accompanied by the steel crystal lattice parameter decrease. The yield stress and strength of steel at room temperature are reduced (by ≈ 1.2 times), compared to those in the initial state, due to a decreased solid-solution and dislocation strengthening efficiency. The precipitation of Laves phase after 5000 h provides additional dispersion strengthening, increasing the yield strength, compared to that after 1000 h of aging. At the elevated test temperatures (580 and 650 °C) the steel strength properties remain unchanged. A fractographic analysis shows predominantly ductile dimple transcrystalline fracture at the temperatures within 20-650 °C. After 5000 h of aging, there are areas of intercrystalline fracture, indicating a local embrittlement of the boundaries due to the Laves phase precipitates.</p>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 17","pages":"17044 - 17059"},"PeriodicalIF":2.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147829859","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}
{"title":"Microstructural Evolution during Welding and its Influence on the Impact Toughness of Heat-Affected Sub-Zones of a W-Co Containing Martensitic Steel","authors":"Tianzhi Huang, Kejian Li, Zhipeng Cai, Songlin Li, Manjie Fan, Xin Huo, Zhenguo Sun","doi":"10.1007/s11665-025-12431-8","DOIUrl":"10.1007/s11665-025-12431-8","url":null,"abstract":"<div><p>This study investigates welding thermal effects on microstructure and impact toughness in the heat-affected zone (HAZ) of novel 9-12% Cr martensitic steel FW2. The HAZ is divided into sub-zones including the near-weld zone (NWZ), the coarse-grained HAZ (CGHAZ), the fine-grained HAZ (FGHAZ), the inter-critical HAZ (ICHAZ), and the over-tempered HAZ (OTHAZ), according to the peak welding temperature. Reduction in grain size and residual <span>(delta)</span> ferrite was observed in the NWZ, suggesting that <span>(gamma to delta)</span> and incomplete <span>(delta to gamma)</span> transformations occurred during welding. Using welding thermal simulation, homogeneous microstructures representing three sub-zones (CGHAZ, FGHAZ, and OTHAZ) were obtained, and Charpy impact tests of these sub-zones were performed. The FGHAZ demonstrated enhanced impact toughness due to refined prior austenite grains (PAGs). In the OTHAZ, the martensite underwent recovery under high-temperature tempering, where dislocation motion formed new high-angle grain boundaries (HAGBs), increasing HAGB density and consequently improving impact toughness. In actual welded joints, the impact energy of the FW2 HAZ was intermediate between that of the CGHAZ and OTHAZ, indicating that directly evaluating the impact toughness of the FW2 HAZ based solely on welded joint would be non-conservative.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"35 11","pages":"10349 - 10362"},"PeriodicalIF":2.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147562016","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}