Shuai-shuai LIU, Xiang CHEN, Wen-huan CHEN, Tian-jiao LI, Guang-sheng HUANG, Wei-zhang WANG, Manoj GUPTA, Kang WEI, Bin JIANG, Fu-sheng PAN
{"title":"Effect of crystallographic orientation on deformation heterogeneity and mechanical properties of AZ31 alloy","authors":"Shuai-shuai LIU, Xiang CHEN, Wen-huan CHEN, Tian-jiao LI, Guang-sheng HUANG, Wei-zhang WANG, Manoj GUPTA, Kang WEI, Bin JIANG, Fu-sheng PAN","doi":"10.1016/S1003-6326(26)67093-8","DOIUrl":"10.1016/S1003-6326(26)67093-8","url":null,"abstract":"<div><div>The rolled (R sample) and extruded (E sample) AZ31 alloys show different texture characteristics, exhibiting a strong basal texture and a transverse direction-split texture, respectively. The increased crystallographic orientation heterogeneity in the E sample enhanced resistance to slip transfer, leading to a more pronounced slip accumulation at the grain boundaries between adjacent grains. This resulted in a higher hetero-deformation induced (HDI) stress in the E sample compared to the R sample. The enhanced yield strength observed in the E sample can be ascribed to the elevated Hall−Petch slope value, which was a consequence of the reduced geometrical compatibility factor. Meanwhile, more significant HDI strengthening and hardening effects synergistically improved both strength and ductility. Notably, high grain boundary misorientation angle contributed to the activation of non-basal slips, thereby alleviating local strain concentration near the grain boundary and improving the work hardening ability.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2281-2295"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jin SHA, Ju LI, Yang CUI, Yang CHEN, Jun TAO, Jun-long JIN, Zi-te WANG, Zhi-xiang QI, Gong ZHENG, Guang CHEN
{"title":"Effects of welding pressure on microstructure, texture, and mechanical properties of Ti60 linear friction welding joints","authors":"Jin SHA, Ju LI, Yang CUI, Yang CHEN, Jun TAO, Jun-long JIN, Zi-te WANG, Zhi-xiang QI, Gong ZHENG, Guang CHEN","doi":"10.1016/S1003-6326(26)67098-7","DOIUrl":"10.1016/S1003-6326(26)67098-7","url":null,"abstract":"<div><div>The microstructural evolution, texture development, and mechanical properties of Ti60 linear friction welded joints were systematically investigated under varying welding pressures (32, 64, and 96 MPa). Continuous dynamic recrystallization occurs in both the weld zone (WZ) and thermo-mechanically affected zone (TMAZ), with increased welding pressure leading to refined recrystallized <em>β</em> grains and reduced joint dimensions. The WZ exhibits transformation from parallel lamellar <em>α</em> to acicular martensitic <em>α’</em> with basket-weave morphology. Texture analysis reveals pressure-dependent characteristics, with maximum intensity (11.27) observed at 64 MPa in the WZ. Enhanced mechanical properties result from multiple strengthening mechanisms: strain hardening and phase transformation strengthening in the TMAZ, coupled with grain refinement and phase transformation strengthening in the WZ. While joints maintain equivalent tensile strength to the base material, their elongation increases with welding pressure (8.0%, 9.3%, and 9.7% at 32, 64, and 96 MPa, respectively), correlated with reduced TMAZ and WZ widths.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2354-2372"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhi-qiang ZHOU, Wei XIANG, Yang WANG, Pan XIE, Xian-dong XU
{"title":"Unveiling solidification microstructure of nickel-based single crystal superalloy by fine characterization","authors":"Zhi-qiang ZHOU, Wei XIANG, Yang WANG, Pan XIE, Xian-dong XU","doi":"10.1016/S1003-6326(26)67099-9","DOIUrl":"10.1016/S1003-6326(26)67099-9","url":null,"abstract":"<div><div>The solidification structure of nickel-based single crystal superalloy was systematically investigated by the combined methods of scanning electron microscopy, electron probe microanalysis, site-specific sampling, spherical aberration-corrected scanning transmission electron microscopy and super energy dispersive spectroscopy. The results show that four distinct solidification microstructures, dendritic core, interdendritic region, coarse <em>γ</em>′ phase and a network-type (NT) <em>γ</em>–<em>γ</em>′ eutectic, are formed during the process of directional solidification. The NT <em>γ</em>–<em>γ</em>′ region exhibits low <em>γ</em>/<em>γ</em>′ interfacial misfit and minimal segregation, showing exceptional stability against dissolution during heat treatment. In contrast, the coarse <em>γ</em>′ phase displays high misfit, severe segregation, and dense quadrilateral dislocation networks at interfaces, promoting dissolution and re-precipitation of <em>γ</em>′ phase.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2373-2384"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Waqas FARID, Kai-guang LUO, Charlie KONG, Hai-liang YU
{"title":"Advancements in accumulative roll bonding based process for developing aluminum matrix composites reinforced with particles: A review","authors":"Waqas FARID, Kai-guang LUO, Charlie KONG, Hai-liang YU","doi":"10.1016/S1003-6326(26)67089-6","DOIUrl":"10.1016/S1003-6326(26)67089-6","url":null,"abstract":"<div><div>Accumulative roll bonding (ARB) is a severe plastic deformation technique that enables the fabrication of ultrafine-grained aluminum matrix composites (AMCs). This review aims to provide a comprehensive analysis of ARB and its modified techniques for fabricating high-performance AMCs. The review categorizes AMCs based on aluminum matrix materials, reinforcement types, and ARB fabricating techniques, systematically evaluating their role in refined microstructures and enhanced mechanical properties. The review discusses the underlying mechanisms governing the strengthening behavior, including grain refinement, dislocation–particle interactions, and load transfer efficiency, leading to superior mechanical performance. The influence of processing parameters is critically assessed to establish correlations between microstructure and mechanical properties. Findings indicate that ARB significantly enhances reinforcement dispersion and grain refinement, resulting in higher tensile strength, improved hardness, and superior corrosion resistance. It is concluded that ARB is a scalable and cost-effective technique for producing high-performance AMCs, with strong potential for industrial applications.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2205-2232"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
You-wang TU, Xiu-chong ZHU, Xiao KANG, Lei ZHANG, Bo LUO
{"title":"Current-carrying tribological behavior of surface mechanical attrition treated copper under reciprocating microscale sliding","authors":"You-wang TU, Xiu-chong ZHU, Xiao KANG, Lei ZHANG, Bo LUO","doi":"10.1016/S1003-6326(26)67100-2","DOIUrl":"10.1016/S1003-6326(26)67100-2","url":null,"abstract":"<div><div>The effects of surface mechanical attrition treatment (SMAT) on pure copper, with treatment durations ranging from 15 to 60 min, were investigated, focusing on surface characteristics and current-carrying tribological behavior. The current-carrying tribological behavior was examined using reciprocating microscale sliding tests under loads of 50 and 200 mN with an applied voltage of 5 V. The results show that sufficient SMAT not only produces nanocrystalline structures that improve the surface hardness of copper but also develops (111) textures and promotes the formation of finely-dispersed copper oxides on the surface layer. These microstructural evolutions synergistically contribute to optimal current-carrying tribological performance in the sample treated for 60 min at a load of 50 mN. Compared to the untreated sample, the friction coefficient, wear rate, and electrical contact resistance (ECR) of the 60 min SMAT-treated sample are reduced by 6.5%, 47.1%, and 9.3%, respectively, and the stability of current transmission is improved by 4.3%.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2385-2400"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Li-chang WANG, Sheng-yu JI, Shen ZHANG, Lu WANG, Jing-peng LIU, Yi-han ZHANG
{"title":"Failure precursors of heat–cool treated crystalline rocks using acoustic emission under multiple loading conditions","authors":"Li-chang WANG, Sheng-yu JI, Shen ZHANG, Lu WANG, Jing-peng LIU, Yi-han ZHANG","doi":"10.1016/S1003-6326(26)67101-4","DOIUrl":"10.1016/S1003-6326(26)67101-4","url":null,"abstract":"<div><div>The thermo-mechanical response and failure precursors of granite and granodiorite subjected to heat treatments at 100–300 °C, followed by either natural cooling or rapid water-cooling, under uniaxial, biaxial, and Brazilian splitting tests were examined. Acoustic emission (AE) monitoring was used to track amplitude (<em>A</em>), the ratio of initial rising angle to average frequency (RA/AF), and the ratio of energy to ringing counts (<em>E</em>/<em>C</em>) parameters, and their evolution was analyzed using variance, autocorrelation coefficient, and entropy to identify early-warning signals. The results indicate that the combined variation of these statistical indicators successfully captures the transition from stable crack propagation to imminent failure. Natural cooling decreases system disordering, whereas rapid water-cooling intensifies AE activity and energy release due to residual thermal stresses. These findings establish a multi-parameter AE-based framework for evaluating instability in thermally damaged crystalline rocks.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2401-2423"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
De-qing ZHU, Yin JIANG, Tao DONG, Jian PAN, Zheng-qi GUO, Si-wei LI, Wen-zhuo MA
{"title":"Mechanism and kinetics of vacuum and microwave-enhanced zinc removal from zinc-bearing dust pellets","authors":"De-qing ZHU, Yin JIANG, Tao DONG, Jian PAN, Zheng-qi GUO, Si-wei LI, Wen-zhuo MA","doi":"10.1016/S1003-6326(26)67104-X","DOIUrl":"10.1016/S1003-6326(26)67104-X","url":null,"abstract":"<div><div>The zinc removal kinetics from the zinc-bearing dust pellets was comparatively investigated using conventional heating reduction (CHR), atmospheric microwave-heating reduction (AMR) and vacuum microwave-heating reduction (VMR) processes. Key operational parameters, including vacuum environment, microwave-heating, reduction time and reduction temperature, were evaluated for their effect on zinc removal efficiency. The results show that vacuum and microwave-heating conditions significantly lower the reduction temperature, shorten the reduction time, and lessen the reductant dosage compared with the CHR process. The kinetic model fitting results show that the zinc removal model of VMR process is the Avrami−Erofeev second-order chemical reaction model. The apparent activation energies of the CHR, AMR and VMR processes are 93.15, 60.52 and 18.69 kJ/mol, respectively.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2455-2468"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shu-hao DONG, Ya-kai YANG, Dong-qi SONG, Hao ZHANG, Hui GUO, Jiu-qing LIU, Min GAN
{"title":"Direct preparation of LiOH from α-spodumene with improved autoclave dissolution in NaOH−Na2SO4−CaO system","authors":"Shu-hao DONG, Ya-kai YANG, Dong-qi SONG, Hao ZHANG, Hui GUO, Jiu-qing LIU, Min GAN","doi":"10.1016/S1003-6326(26)67105-1","DOIUrl":"10.1016/S1003-6326(26)67105-1","url":null,"abstract":"<div><div>An alkaline autoclave dissolution method was developed to directly extract LiOH from <em>α</em>-spodumene in NaOH−Na<sub>2</sub>SO<sub>4</sub>−CaO system. Approximately 90.3% Li, 10.27% Si, and 9.62% Al were leached under optimal conditions: ore to CaO mass ratio of 1:1, liquid-to-solid ratio of 14 mL/g, NaOH and Na<sub>2</sub>SO<sub>4</sub> mass concentrations both of 15% at 280 ℃ for 3 h. Notably, the addition of Na<sub>2</sub>SO<sub>4</sub> was found to selectively replace Li<sup>+</sup> while simultaneously reduce NaOH consumption. Kinetic analysis was also provided further insight into the dissolution behavior of <em>α</em>-spodumene in this system. This innovative autoclave process can eliminate the energy-intensive high-temperature calcination for phase transformation, and enables the direct preparation of LiOH<em>·</em>H<sub>2</sub>O from <em>α</em>-spodumene.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2469-2482"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wasi ULLAH, Muhammad ALI, Ling-yu ZHAO, Hong YAN, Bo-yu LIU, Zhi-wei SHAN, Rong-shi CHEN
{"title":"Quasi in-situ EBSD analysis of grain growth, grain rotation and special boundaries during annealing of extruded Mg−Zn−Gd alloy","authors":"Wasi ULLAH, Muhammad ALI, Ling-yu ZHAO, Hong YAN, Bo-yu LIU, Zhi-wei SHAN, Rong-shi CHEN","doi":"10.1016/S1003-6326(26)67094-X","DOIUrl":"10.1016/S1003-6326(26)67094-X","url":null,"abstract":"<div><div>Grain boundary (GB) characteristics in relation to texture development were investigated in an extruded Mg−Zn−Gd alloy subjected to isothermal annealing at 400 °C for 5−155 min. Quasi in-situ electron backscatter diffraction (EBSD) was employed to analyze grain growth (GG), grain rotation, and GB character evolution. GG was found to proceed via two distinct mechanisms: nucleation at triple junction followed by subsequent growth, and GB migration governed by the Burke–Turnbull mechanism. The rotation angle of (0001) basal pole ranged from 31° to 40°, contributing to the observed non-basal texture. Misfit strain (<em>δ</em>) associated with various coincidence site lattice (CSL) boundaries was evaluated, showing that the length fractions for Σ7, Σ13b and Σ45a boundaries decreased in the isothermal annealing due to their higher <em>δ</em> values, while those for Σ9, Σ21a and Σ43b boundaries increased. Grain growth kinetics was evaluated after isothermal annealing and grain growth exponent was also determined. Collectively, these findings demonstrate that GB characteristics significantly influence texture evolution by promoting energetically favorable boundary configurations.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2296-2309"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kong-liang HU, Chao-wen HUANG, Jiang YANG, Lun ZHAO, Hai SU, Dan LIU, Tian-xin LI, Ming-pan WAN
{"title":"Deformation mechanism transition and ductility enhancement in Ti-55531 alloy under combined pre-torsion and tension loading","authors":"Kong-liang HU, Chao-wen HUANG, Jiang YANG, Lun ZHAO, Hai SU, Dan LIU, Tian-xin LI, Ming-pan WAN","doi":"10.1016/S1003-6326(26)67097-5","DOIUrl":"10.1016/S1003-6326(26)67097-5","url":null,"abstract":"<div><div>The effects of varying pre-torsion amounts (35 and 41 N·m) on the tensile properties, deformation mechanisms, and fracture behavior of Ti-55531 alloy with a bimodal microstructure were investigated using a combined pre-torsion and tension loading approach. The findings reveal that pre-torsion deformation prior to tension enhances the activity of plastic deformation mechanisms by promoting dislocation slip and altering grain orientation. Under uniaxial tensile loading, the <em>α</em><sub>p</sub> phase activates multiple prismatic slip planes without significant interaction. Conversely, under pre-torsion (35, 41 N·m)−tension loading, the <em>α</em><sub>p</sub> phase predominantly induces interactions among multiple slip planes within the prismatic slip system, resulting in an increased density of slip lines as the pre-torsion amount increases. Furthermore, pre-torsion promotes the formation of high-density twins within a single <em>α</em><sub>s</sub> lath following tensile deformation.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 8","pages":"Pages 2335-2353"},"PeriodicalIF":5.5,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148718891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}