Transactions of Nonferrous Metals Society of China最新文献

Magnetic hardening strategy for high-performance Sm(CoFeCuZr)z sintered permanent magnets prepared by dual-alloy process 双合金法制备高性能Sm(CoFeCuZr)z烧结永磁体的磁硬化策略

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)67006-3

Jian-jun YANG , Dong-tao ZHANG , Yu-qing LI , Zan LONG , Cheng-zhen MENG , Wei-qiang LIU , Ming YUE

{"title":"Magnetic hardening strategy for high-performance Sm(CoFeCuZr)z sintered permanent magnets prepared by dual-alloy process","authors":"Jian-jun YANG , Dong-tao ZHANG , Yu-qing LI , Zan LONG , Cheng-zhen MENG , Wei-qiang LIU , Ming YUE","doi":"10.1016/S1003-6326(25)67006-3","DOIUrl":"10.1016/S1003-6326(25)67006-3","url":null,"abstract":"<div><div>To improve the overall magnetic properties of Sm(CoFeCuZr)<sub><em>z</em></sub> sintered magnets, a dual-alloy sintering process that involves mixing high-iron, low-copper powders with low-iron, high-copper powders was systematically investigated. The results demonstrate that this method significantly improves the Cu-lean phenomenon at the grain boundaries, achieves multiscale uniform microstructures, greatly enhances the pinning field strength, and ultimately produces a high-performance dual-alloy magnet with a maximum energy product ((<em>BH</em>)<sub>max</sub>) exceeding 240 kJ/m<sup>3</sup> and an intrinsic coercivity (<em>H</em><sub>cj</sub>) exceeding 2400 kA/m. In particular, when 35 wt.% of low-iron, high-copper alloy powder is incorporated, the dual-alloy magnet achieves a remanence of 1.13 T, <em>H</em><sub>cj</sub> of 2691.2 kA/m and (<em>BH</em>)<sub>max</sub> of 248 kJ/m<sup>3</sup>. To evaluate the overall magnetic performance, the sum of <em>H</em><sub>cj</sub> (in kA/m) and (<em>BH</em>)<sub>max</sub> (in kJ/m<sup>3</sup>) is used as a combined parameter, yielding a value of 2939.2. Compared with single-alloy magnets of the same composition, the dual-alloy sintering process yields magnets with a more uniform elemental distribution and superior magnetic properties.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 917-928"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 properties and deformation mechanisms of Ni−Co-based wrought superalloy via solution−rolling−aging treatment Ni - co基变形高温合金固轧时效处理的力学性能及变形机理

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)66999-8

Yao ZHANG , Jin-lin LI , Yan-cheng LI , Jin-xin DONG , Cai-yu GUO , Hong-yao YU , Qing WANG

{"title":"Mechanical properties and deformation mechanisms of Ni−Co-based wrought superalloy via solution−rolling−aging treatment","authors":"Yao ZHANG , Jin-lin LI , Yan-cheng LI , Jin-xin DONG , Cai-yu GUO , Hong-yao YU , Qing WANG","doi":"10.1016/S1003-6326(25)66999-8","DOIUrl":"10.1016/S1003-6326(25)66999-8","url":null,"abstract":"<div><div>To achieve high strength in Ni−Co-based wrought superalloys, cold-rolling was introduced into the solution and aging treatments. The alloys were characterized and tested using EBSD, SEM, TEM, and tensile tester to analyze their microstructure and mechanical properties at different temperatures, revealing their strengthening and deformation mechanisms. Results indicated that after solution, cold-rolling, and double aging, the alloy contained high-density dislocations, stacking faults, Lomer−Cottrell locks, and nanotwins. The yield strengths of the alloy at room temperature, 923, and 1023 K were 1855, 1406, and 1086 MPa, respectively, which were significantly higher than those of typical Ni-based wrought superalloys. This enhancement was primarily attributed to the dislocations and nanotwins. Additionally, during the cold-rolling process, plastic deformation mainly occurred through dislocation slip. With the temperature increasing to 923 and 1023 K, the main deformation mechanisms of the alloy transformed to stacking faults and nanotwins, respectively.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 818-829"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Processing, microstructure, and mechanical properties of additive manufacturing Inconel 625 using hot wire laser metal deposition 热丝激光金属沉积增材制造Inconel 625的工艺、显微组织和力学性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)66998-6

Guo-xing SU, Yu SHI, Chun-kai LI, Guang LI, Gang ZHANG

{"title":"Processing, microstructure, and mechanical properties of additive manufacturing Inconel 625 using hot wire laser metal deposition","authors":"Guo-xing SU, Yu SHI, Chun-kai LI, Guang LI, Gang ZHANG","doi":"10.1016/S1003-6326(25)66998-6","DOIUrl":"10.1016/S1003-6326(25)66998-6","url":null,"abstract":"<div><div>Inconel 625 alloy components were fabricated using hot wire laser metal deposition (HW-LMD) through process optimization, achieving a wire deposition rate of 1.72 kg/h. The microstructure and mechanical properties of the HW-LMD Inconel 625 alloys were systematically investigated. The results revealed that the microstructure of the HW-LMD Inconel 625 alloys consisted of columnar dendrites, characterized by an average grain size of 12.5 µm and a strong {100}〈001〉 texture. The main phase identified was <em>γ</em>-Ni, with the precipitation of Laves phase, measuring less than 1 μm, observed in the inter-columnar dendritic regions. The average microhardness of the HW-LMD Inconel 625 alloys was HV<sub>1.0</sub> 258. The yield strength and ultimate tensile strength were 493.5 and 837.4 MPa, respectively, with elongation exceeding 50%. Impact absorbing energies at 25 and −78 °C were 223.08 and 200.24 J, respectively. Both the tensile and impact fracture surfaces exhibited dimples, indicating a ductile fracture mechanism during the deformation process.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 796-817"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Evolution of grain orientation and slip mode in gradient AZ31 magnesium alloy sheets with multiple texture components 多织构组分AZ31镁合金梯度板晶粒取向与滑移模式演变

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)66996-2

Wen-tao NIU , Feng LI , Jia-yang ZHANG , Lu SUN , Zi-yi WANG

{"title":"Evolution of grain orientation and slip mode in gradient AZ31 magnesium alloy sheets with multiple texture components","authors":"Wen-tao NIU , Feng LI , Jia-yang ZHANG , Lu SUN , Zi-yi WANG","doi":"10.1016/S1003-6326(25)66996-2","DOIUrl":"10.1016/S1003-6326(25)66996-2","url":null,"abstract":"<div><div>To investigate the evolution of grain orientation and slip modes in magnesium alloys with multiple texture components, an AZ31 gradient-structured magnesium alloy sheet was fabricated using hard plate rolling (HPR). The changes in texture and slip modes under different reductions were examined. The results demonstrate that the AZ31 magnesium alloy sheets display a self-epitaxial gradient structure, with the best mechanical properties observed at rolling temperature of 673 K and reduction of 50%. Significant changes in texture type and strength are observed along the normal direction (ND) of the sheet. The coarse-grain region exhibits a bimodal texture aligned with the rolling direction. These texture variations enhance the stress distribution at the fine grain−coarse grain interface, influencing the grain orientation and the activation of different slip modes, thus improving the mechanical properties of gradient-structured magnesium alloy sheets. This approach offers a new strategy for the fabrication of high-performance magnesium alloy sheets.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 766-779"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Interpretable machine learning predictive model for mechanical properties of AZ31 magnesium alloy rolled sheets AZ31镁合金轧制板力学性能的可解释机器学习预测模型

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)66994-9

Bi-wu ZHU , Hao JIANG , Qiu-ping YI , Xiao LIU , Jian-zhao WU , Wen-hui LIU , Cong-chang XU , Luo-xing LI , Ke HU

{"title":"Interpretable machine learning predictive model for mechanical properties of AZ31 magnesium alloy rolled sheets","authors":"Bi-wu ZHU , Hao JIANG , Qiu-ping YI , Xiao LIU , Jian-zhao WU , Wen-hui LIU , Cong-chang XU , Luo-xing LI , Ke HU","doi":"10.1016/S1003-6326(25)66994-9","DOIUrl":"10.1016/S1003-6326(25)66994-9","url":null,"abstract":"<div><div>To investigate the complex relationship between rolling process parameters and mechanical properties of AZ31 magnesium alloy rolled sheets, the Leave-One-Out Cross-Validation (LOOCV) and parameter tuning were applied to optimizing hyper-parameters for the four (BPNN, SVR, RF, and KNN) machine learning models. An interpretable prediction model based on machine learning and SHapley Additive exPlanations (SHAP), as well as an analytical method combining the SHAP model and the Pearson Correlation Coefficient (PCC), were proposed. The results showed that among the four models, the SVR model was able to simultaneously and accurately predict the ultimate tensile strength (UTS) and elongation (EL). According to the combination analysis of PCC and the magnesium alloy rolling forming mechanism, it was found that strain rate and reduction displayed a negative and positive correlation with UTS, respectively, while rolling temperature and reduction illustrated a positive and negative correlation with EL, respectively. Through the SHAP method, which could interpret the output results of the SVR machine learning model, it was deduced that reduction and strain rate played an important role in the SVR model of the outputs of the UTS and EL, respectively. Combining SHAP with PCC, it was found that strain rate and reduction had a greater influence on the UTS than rolling temperature, whereas strain rate and rolling temperature had more influence on the EL compared to reduction.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 740-753"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Mechanism of ultrasound enhanced selective oxygen pressure leaching of Ga and Ge from zinc powder replacement residue 超声强化锌粉置换渣中Ga和Ge选择性氧压浸出机理研究

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)67009-9

Yuan-xin LIANG , Meng SUN , Bo-yi LUO , Biao DING , Zhe SHEN , Tian-xiang ZHENG , Qiang LI , Bang-fei ZHOU , Chun-mei LIU , Cai-gui WU , Wei-li REN , Yun-bo ZHONG

引用次数: 0

Comparative evaluation of microstructure, mechanical properties, and strengthening mechanisms in cast and selective laser melted AlSi10Mg alloys with direct aging treatment 直接时效铸造与选择性激光熔化AlSi10Mg合金的显微组织、力学性能及强化机理比较

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)66990-1

A. SATHISHKUMAR , R. SOUNDARARAJAN , S. SIVASANKARAN , A. RAMESH

{"title":"Comparative evaluation of microstructure, mechanical properties, and strengthening mechanisms in cast and selective laser melted AlSi10Mg alloys with direct aging treatment","authors":"A. SATHISHKUMAR , R. SOUNDARARAJAN , S. SIVASANKARAN , A. RAMESH","doi":"10.1016/S1003-6326(25)66990-1","DOIUrl":"10.1016/S1003-6326(25)66990-1","url":null,"abstract":"<div><div>The impact of selective laser melting (SLM) and direct aging (DA) heat treatment on the microstructure and mechanical properties of AlSi10Mg alloys was investigated. Microstructural characterization using SEM and EBSD revealed that SLM alloys exhibited a fine-grained cellular structure with <em>α</em>(Al) and Si-enriched phases, whereas cast alloys displayed a coarse eutectic Si morphology. Subsequent DA treatment demonstrated a 9.24% higher yield strength and a 5.56% improvement in ultimate tensile strength of the DA-B AlSi10Mg alloy when compared to the non-heat-treated alloy (NHT-AB), indicating significant improvements due to the DA process. Fracture surface analysis indicated predominantly ductile fracture in SLM alloys, contrasting with mixed ductile−brittle behavior in cast samples. Furthermore, EBSD texture analysis indicated a grain elongation in necked regions of SLM alloys after tensile deformation. The precipitation strengthening significantly contributes to the enhanced strength of the SLM alloys followed by the cell boundary strengthening. These findings highlight the potential of SLM and DA for producing high-performance AlSi10Mg components for aerospace, automotive, and rapid prototyping applications.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 677-693"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Optimization of ZK60 magnesium alloy properties via secondary extrusion of rapidly solidified strips 快速凝固长条二次挤压优化ZK60镁合金性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)66993-7

Zhen-shuai LI , Chao YANG , Shuai BAO , Yun-gui CHEN

引用次数: 0

Recovery of valuable metals from lepidolite by hydrochloric acid leaching and kinetics on dissolution of lithium 锂云母中有价金属的盐酸浸出及锂溶解动力学研究

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)67010-5

Song-lin LIU , Jin-lian LIU , Xiao-peng SONG , Zhou-lan YIN , Xin-hai LI , Zhi-xing WANG , Hua-jun GUO , Guo-chun YAN , Qi-yang HU , Xun-hui XIONG , Jie-xi WANG

{"title":"Recovery of valuable metals from lepidolite by hydrochloric acid leaching and kinetics on dissolution of lithium","authors":"Song-lin LIU , Jin-lian LIU , Xiao-peng SONG , Zhou-lan YIN , Xin-hai LI , Zhi-xing WANG , Hua-jun GUO , Guo-chun YAN , Qi-yang HU , Xun-hui XIONG , Jie-xi WANG","doi":"10.1016/S1003-6326(25)67010-5","DOIUrl":"10.1016/S1003-6326(25)67010-5","url":null,"abstract":"<div><div>The leaching process and kinetic behavior of lepidolite in hydrochloric acid were explored systematically. The influence of leaching conditions on the leaching efficiency of valuable metals in lepidolite was investigated. Under optimized conditions, the leaching efficiencies of Li, K, Rb, Cs and Al are 92.02%, 93.31%, 88.59%, 86.75% and 81.07%, respectively. Kinetics research results show that the leaching process conforms to the shrinking core model that is under the mixed control of chemical reaction and diffusion through the solid product layer. In addition, the contribution of solid product layer diffusion to the leaching gradually expands as the temperature rises, but it is still significantly less than the contribution of chemical reaction. Cost saving in the neutralizing agent and leaching processes makes hydrochloric acid an economical leaching agent for lepidolite. Finally, the Li<sub>2</sub>CO<sub>3</sub> product with a purity of 99.89% was synthesized from the hydrochloric acid leachate.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 974-987"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 evolution and tensile deformation behaviors of fine-grained Fe40Mn20Co20Cr15Si5 high entropy alloy prepared by friction stir processing 搅拌摩擦法制备细晶Fe40Mn20Co20Cr15Si5高熵合金的组织演变及拉伸变形行为

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI: 10.1016/S1003-6326(25)67001-4

Jia LIN , Yuan FANG , Wen WANG , Peng HAN , Ting ZHANG , Qiang LIU , Ya-ting XIANG , Feng-ming QIANG , Ke QIAO , Kuai-she WANG

{"title":"Microstructural evolution and tensile deformation behaviors of fine-grained Fe40Mn20Co20Cr15Si5 high entropy alloy prepared by friction stir processing","authors":"Jia LIN , Yuan FANG , Wen WANG , Peng HAN , Ting ZHANG , Qiang LIU , Ya-ting XIANG , Feng-ming QIANG , Ke QIAO , Kuai-she WANG","doi":"10.1016/S1003-6326(25)67001-4","DOIUrl":"10.1016/S1003-6326(25)67001-4","url":null,"abstract":"<div><div>A fine-grained metastable dual-phase Fe<sub>40</sub>Mn<sub>20</sub>Co<sub>20</sub>Cr<sub>15</sub>Si<sub>5</sub> high entropy alloy (CS-HEA) with excellent strength and ductility was successfully prepared by friction stir processing (FSP). The microstructural and mechanical properties of the fine-grained CS-HEA were characterized. The results showed that as-cast shrinkage cavities and elemental segregation were eliminated. The average grain size was refined from 121.1 to 5.4 μm. The face-centered cubic phase fraction increased from 23% to 82%. During tensile deformation, dislocation slip dominated at strains ranging from 5% to 17%, followed by transformation induced plasticity (TRIP) from 17% to 26%, and twin induced plasticity (TWIP) from 26% to 37%. The yield strength, ultimate tensile strength, and elongation of the fine-grained CS-HEA were 503 MPa, 1120 MPa, and 37%, respectively. The strength−ductility synergy of fine-grained CS-HEA was attributed to the combined effects of TRIP, TWIP, dislocation strengthening, and fine-grained strengthening.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 842-854"},"PeriodicalIF":4.7,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147743363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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