Transactions of Nonferrous Metals Society of China最新文献_第2页

Effects of cold rolling path on recrystallization behavior and mechanical properties of pure copper during annealing 退火过程中冷轧路径对纯铜再结晶行为和机械性能的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66605-7

Jing CHEN , Wen-jie XU , Jia-hao YANG , Zhi YANG , Hong-li SHI , Gao-yong LIN , Zhu-min LI , Xu SHEN , Bo JIANG , Hui-qun LIU , Kai-xuan GUI

{"title":"Effects of cold rolling path on recrystallization behavior and mechanical properties of pure copper during annealing","authors":"Jing CHEN , Wen-jie XU , Jia-hao YANG , Zhi YANG , Hong-li SHI , Gao-yong LIN , Zhu-min LI , Xu SHEN , Bo JIANG , Hui-qun LIU , Kai-xuan GUI","doi":"10.1016/S1003-6326(24)66605-7","DOIUrl":"10.1016/S1003-6326(24)66605-7","url":null,"abstract":"<div><div>The recrystallization behavior, grain boundary characteristic distribution, and mechanical properties of pure Cu sheets that were subjected to different cold rolling paths, and then annealed at 400 °C for 10, 30, 60, and 420 min, were investigated. Different rolling paths changed the grain boundary orientations of cold-rolled copper, causing recrystallized grains to nucleate and grow in an oriented manner. However, the evolution of the texture indicated that cold-rolled copper with different rolling paths did not show an obvious preferred orientation after annealing. The RD-60 specimen exhibited the smallest grain size (6.6 μm). The results indicated that the grain size and low-Σ CSL grain boundaries worked together to provide RD-60 samples with appropriate mechanical properties and high plasticity. The yield strength, ultimate tensile strength, and elongation of RD-60 sample were 81 MPa, 230 MPa, and 49%, respectively. These results could provide guidance for tuning the microstructures and properties of pure Cu foils, as well as designing fabrication routes for pure Cu foils through processes such as rolling and drawing.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3233-3250"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586826","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}

引用次数: 0

Thermodynamic simulation of stepwise precipitation of NH4VO3 and NaHCO3 from carbonating Na3VO4 solution 从碳化 Na3VO4 溶液中逐步析出 NH4VO3 和 NaHCO3 的热力学模拟

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66615-X

Fan-cheng MENG , Yong-chao WANG , Xin CHAI , Ya-hui LIU , Li-na WANG , De-sheng CHEN

{"title":"Thermodynamic simulation of stepwise precipitation of NH4VO3 and NaHCO3 from carbonating Na3VO4 solution","authors":"Fan-cheng MENG , Yong-chao WANG , Xin CHAI , Ya-hui LIU , Li-na WANG , De-sheng CHEN","doi":"10.1016/S1003-6326(24)66615-X","DOIUrl":"10.1016/S1003-6326(24)66615-X","url":null,"abstract":"<div><div>Thermodynamic simulation was conducted to design a new process of stepwise precipitating NH<sub>4</sub>VO<sub>3</sub> and NaHCO<sub>3</sub> from regulating the CO<sub>2</sub> carbonation of Na<sub>3</sub>VO<sub>4</sub> solution. Firstly, a new V(V) speciation model for the aqueous solution containing vanadate and carbonate is established by using the Bromley−Zemaitis activity coefficient model. Subsequently, thermodynamic equilibrium calculations are conducted to clarify the behavior of vanadium, carbon, sodium, and impurity species in atmospheric or high-pressure carbonation. To ensure the purity and recovery of vanadium products, Na<sub>3</sub>VO<sub>4</sub> solution is initially carbonated to the pH of 9.3−9.4, followed by precipitating NH<sub>4</sub>VO<sub>3</sub> by adding (NH<sub>4</sub>)<sub>2</sub>CO<sub>3</sub>. After vanadium precipitation, the solution is deeply carbonated to the final pH of 7.3−7.5 to precipitate NaHCO<sub>3</sub>, and the remaining solution is recycled to dissolve Na<sub>3</sub>VO<sub>4</sub> crystals. Finally, verification experiments demonstrate that 99.1% of vanadium and 91.4% of sodium in the solution are recovered in the form of NH<sub>4</sub>VO<sub>3</sub> and NaHCO<sub>3</sub>, respectively.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3386-3399"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586949","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}

引用次数: 0

Enhanced mechanical properties of molybdenum alloy originating from composite strengthening of Re and CeO2 通过 Re 和 CeO2 的复合强化提高钼合金的机械性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66609-4

Meng-yao ZHANG , Shuai MA , Xin LI , Ye GAO , Zhuang-zhi WU , De-zhi WANG

{"title":"Enhanced mechanical properties of molybdenum alloy originating from composite strengthening of Re and CeO2","authors":"Meng-yao ZHANG , Shuai MA , Xin LI , Ye GAO , Zhuang-zhi WU , De-zhi WANG","doi":"10.1016/S1003-6326(24)66609-4","DOIUrl":"10.1016/S1003-6326(24)66609-4","url":null,"abstract":"<div><div>To enhance the mechanical properties of molybdenum alloys at both room and high temperatures, Mo−14Re−1CeO<sub>2</sub> alloy was synthesized using the powder metallurgy method, and the corresponding microstructure and mechanical properties were characterized. The results indicate that the ultimate tensile strength of Mo−14Re−1CeO<sub>2</sub> reaches 657 MPa, with a total elongation of 35.2%, significantly higher than those of pure molybdenum (453 MPa, and 7.01%). Furthermore, the compression strength of Mo−14Re−1CeO<sub>2</sub> at high temperature (1200 °C) achieves 355 MPa, which is still larger than that of pure molybdenum (221 MPa). It is revealed that there is a coherent interface between CeO<sub>2</sub> and the Mo−14Re matrix with CeO<sub>2</sub> particles uniformly distributed in both intergranular and intragranular regions. The improvements in mechanical properties are primarily attributed to the formation of Mo−Re solid solution, grain refinement, and dispersion strengthening effect of CeO<sub>2</sub>.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3295-3308"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586938","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}

引用次数: 0

Self-repairing Al2O3−TiO2 coatings fabricated through plasma electrolytic oxidation with various cathodic pulse parameters 采用不同阴极脉冲参数的等离子电解氧化法制造的 Al2O3-TiO2 自修复涂层

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66611-2

Mehri HASHEMZADEH , Keyvan RAEISSI , Fakhreddin ASHRAFIZADEH , Frank SIMCHEN , Amin HAKIMIZAD , Monica SANTAMARIA , Thomas LAMPKE

{"title":"Self-repairing Al2O3−TiO2 coatings fabricated through plasma electrolytic oxidation with various cathodic pulse parameters","authors":"Mehri HASHEMZADEH , Keyvan RAEISSI , Fakhreddin ASHRAFIZADEH , Frank SIMCHEN , Amin HAKIMIZAD , Monica SANTAMARIA , Thomas LAMPKE","doi":"10.1016/S1003-6326(24)66611-2","DOIUrl":"10.1016/S1003-6326(24)66611-2","url":null,"abstract":"<div><div>The influence of cathodic pulse parameters was evaluated on plasma electrolytic oxidation (PEO) coatings grown on 7075 aluminum alloy in a silicate-based electrolyte containing potassium titanyl oxalate (PTO) using pulsed bipolar waveforms with various cathodic duty cycles and cathodic current densities. The coatings were characterized by SEM, EDS, and XRD. EIS was applied to investigate the electrochemical properties. It was observed that the increase of cathodic duty cycle and cathodic current density from 20% and 6 A/dm<sup>2</sup> to 40% and 12 A/dm<sup>2</sup> enhances the growth rate of the inner layer from 0.22 to 0.75 µm/min. Adding PTO into the bath showed a fortifying effect on influence of the cathodic pulse and the mentioned change of cathodic pulse parameters, resulting in an increase of the inner layer growth rate from 0.25 to 1.10 µm/min. Based on EDS analysis, Si and Ti were incorporated dominantly in the upper parts of the coatings. XRD technique merely detected <em>γ</em>-Al<sub>2</sub>O<sub>3</sub>, and there were no detectable peaks related to Ti and Si compounds. However, the EIS results confirmed that the incorporation of Ti<sup>4+</sup> into alumina changed the electronic properties of the coating. The coatings obtained from the bath containing PTO using the bipolar waveforms with a cathodic duty cycle of 40% and current density values higher than 6 A/dm<sup>2</sup> showed highly appropriate electrochemical behavior during 240 d of immersion due to an efficient repairing mechanism. Regarding the effects of studied parameters on the coating properties, the roles of cathodic pulse parameters and PTO in the PEO process were highlighted.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3326-3343"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586940","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}

引用次数: 0

3D modeling for effect of tool eccentricity on coupled thermal and material flow characteristics during friction stir welding 搅拌摩擦焊接过程中工具偏心对热和材料流动耦合特性影响的三维建模

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66610-0

Hao SU, Ji CHEN, Chuan-song WU

引用次数: 0

Enhanced dealkalization of bauxite residue through calcium-activated desulfurization gypsum 通过钙活化脱硫石膏提高铝土矿残渣的脱碱效果

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66617-3

Yu-jun WU , Sheng-guo XUE , Li-ping LIU , Feng LI , Graeme J. MILLAR , Fei GE , Jiang TIAN

引用次数: 0

Cryogenic springback of 2219-W aluminum alloy sheet through V-shaped bending 通过 V 形弯曲实现 2219-W 铝合金板材的低温回弹

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66601-X

Xiao-bo FAN , Qi-liang WANG , Fang-xing WU , Xu-gang WANG

引用次数: 0

Modeling of recrystallization behaviour of AA6xxx aluminum alloy during extrusion process 挤压过程中 AA6xxx 铝合金的再结晶行为建模

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66600-8

Marco NEGOZIO , Antonio SEGATORI , Riccardo PELACCIA , Barbara REGGIANI , Sara Di DONATO , Lorenzo DONATI

引用次数: 0

Microstructural evolution and dynamic recrystallization mechanisms of additively manufactured TiAl alloy with heterogeneous microstructure during hot compression 热压缩过程中具有异质微观结构的添加式制造钛铝合金的微观结构演变和动态再结晶机制

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66603-3

Hui TAO , Hui-zhong LI , Jia-hui LI , Li WANG , Wei-wei HE , Xiao-fen TAN , Rui ZHOU , Xiao-peng LIANG

{"title":"Microstructural evolution and dynamic recrystallization mechanisms of additively manufactured TiAl alloy with heterogeneous microstructure during hot compression","authors":"Hui TAO , Hui-zhong LI , Jia-hui LI , Li WANG , Wei-wei HE , Xiao-fen TAN , Rui ZHOU , Xiao-peng LIANG","doi":"10.1016/S1003-6326(24)66603-3","DOIUrl":"10.1016/S1003-6326(24)66603-3","url":null,"abstract":"<div><div>Microstructural evolution and dynamic recrystallization (DRX) mechanisms of a Ti−48Al−2Cr−2Nb (at.%) alloy prepared by selective electron beam melting (SEBM) during hot deformation at 1150 °C and 0.1 s<sup>−1</sup> were investigated by hot compression tests, optical microscope (OM), scanning electron microscope (SEM), electron back-scattered diffraction (EBSD) and transmission electron microscope (TEM). The results show that the initial microstructure of the as-SEBMed alloy exhibits layers of coarse <em>γ</em> grains and fine <em>γ</em>+<em>α</em><sub>2</sub>+(<em>α</em><sub>2</sub>/<em>γ</em>) lamellar mixture grains alternately along the building direction. During the early stage of hot deformation, deformation twins tend to form within the coarse grains, facilitating subsequent deformation, and a small number of DRX grains appear in the fine-grained regions. With the increase of strain, extensive DRX grains are formed through different DRX mechanisms in both coarse and fine-grained regions, involving discontinuous dynamic recrystallization mechanism (DDRX) in the fine-grained regions and a coexistence of DDRX and continuous dynamic recrystallization (CDRX) in the coarse- grained regions.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3208-3220"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586824","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}

引用次数: 0

Microstructure and properties of Cu matrix composites reinforced with surface-modified Kovar particles 用表面改性科瓦颗粒增强的铜基复合材料的微观结构和性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI: 10.1016/S1003-6326(24)66606-9

Tao MENG , Ri-chu WANG , Zhi-yong CAI , Ying-jun YAO

引用次数: 0