Transactions of Nonferrous Metals Society of China最新文献_第9页

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

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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

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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

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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

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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

Enhancing Na+ diffusion dynamics and structural stability of O3-NaMn0.5Ni0.5O2 cathode by Sc and Zn dual-substitution 通过 Sc 和 Zn 双替代增强 O3-NaMn0.5Ni0.5O2 阴极的 Na+ 扩散动力学和结构稳定性

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)66612-4

Bin-bin WANG , Yi-ming FENG , Xin LUO , Qun HUANG , Zi-xing HOU , Ya-qin WU , Peng-yu WANG , Yu-yang QI , Qing-fei MENG , Wei-feng WEI , Liang-jun ZHOU

{"title":"Enhancing Na+ diffusion dynamics and structural stability of O3-NaMn0.5Ni0.5O2 cathode by Sc and Zn dual-substitution","authors":"Bin-bin WANG , Yi-ming FENG , Xin LUO , Qun HUANG , Zi-xing HOU , Ya-qin WU , Peng-yu WANG , Yu-yang QI , Qing-fei MENG , Wei-feng WEI , Liang-jun ZHOU","doi":"10.1016/S1003-6326(24)66612-4","DOIUrl":"10.1016/S1003-6326(24)66612-4","url":null,"abstract":"<div><div>Sc and Zn were introduced into O3-NaMn<sub>0.5</sub>Ni<sub>0.5</sub>O<sub>2</sub> (NaMN) using the combination of solution combustion and solid-state method. The effect of Sc and Zn dual-substitution on Na<sup>+</sup> diffusion dynamics and structural stability of NaMN was investigated. The physicochemical characterizations suggest that the introduction of Sc and Zn broaden Na<sup>+</sup> diffusion channels and weaken the Na—O bonds, thereby facilitating the diffusion of sodium ions. Simulations indicate that the Sc and Zn dual-substitution decreases the diffusion barrier of Na-ions and improves the conductivity of the material. The dual-substituted NaMn<sub>0.5</sub>Ni<sub>0.4</sub>Sc<sub>0.04</sub>Zn<sub>0.04</sub>O<sub>2</sub> (NaMNSZ44) cathode delivers impressive cycle stability with capacity retention of 71.2 % after 200 cycles at 1<em>C</em> and 54.8% after 400 cycles at 5<em>C</em>. Additionally, the full cell paired with hard carbon anode exhibits a remarkable long-term cycling stability, showing capacity retention of 64.1% after 250 cycles at 1<em>C</em>. These results demonstrate that Sc and Zn dual-substitution is an effective strategy to improve the Na<sup>+</sup> diffusion dynamics and structural stability of NaMN.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3344-3357"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586946","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 mechanical properties of continuous drive friction welded Ti2AlNb alloy under different rotational rates 不同转速下连续驱动摩擦焊接 Ti2AlNb 合金的微观结构和机械性能

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)66604-5

Zhi-qiang BU , Xiu-ping MA , Jia-yun WU , Zhen LÜ , Hu CHEN , Jin-fu LI

{"title":"Microstructure and mechanical properties of continuous drive friction welded Ti2AlNb alloy under different rotational rates","authors":"Zhi-qiang BU , Xiu-ping MA , Jia-yun WU , Zhen LÜ , Hu CHEN , Jin-fu LI","doi":"10.1016/S1003-6326(24)66604-5","DOIUrl":"10.1016/S1003-6326(24)66604-5","url":null,"abstract":"<div><div>Ti<sub>2</sub>AlNb-based alloy was joined in a continuous drive friction welding machine under different rotational rates (500, 1000 and 1500 r/min). The microstructure and mechanical properties of the joints were investigated. It is shown that the weld zone (WZ) is fully composed of recrystallized <em>B</em>2 phase, and the grain size decreases with increasing rotational rate. The thermo-mechanically affected zone (TMAZ) suffers severe deformation during welding, due to which most of original precipitation phase is dissolved and streamlines are present. In the heat affected zone (HAZ), only the fine <em>O</em> phase is dissolved. The as-welded joint produced using 1000 r/min has the best mechanical properties, whose strength and elongation are both close to those of the base metal, while the as-welded joint obtained using 500 r/min exhibits the worst mechanical properties. Post-weld annealing treatment annihilates the deformation microstructure and fine <em>O</em> phase precipitates in the joints, consequently improving the mechanical properties significantly. Decomposed <em>α</em><sub>2</sub> phase is a weakness for the mechanical performance of the joint since microcracks are apt to form in it in the tensile test.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3221-3232"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586825","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}

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Microstructure and ablation behavior of Zr-based ultra-high-temperature gradient composites 锆基超高温梯度复合材料的微观结构和烧蚀行为

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-09-01 DOI: 10.1016/S1003-6326(24)66583-0

Qing-hua LIU , Tian TIAN , Wei SUN , Hong-bo ZHANG , Xiang XIONG

引用次数: 0

In-situ building of multiscale porous NiFeZn/NiZn-Ni heterojunction for superior overall water splitting 原位构建多尺度多孔镍铁锌/镍锌镍异质结，实现优异的整体水分离性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-09-01 DOI: 10.1016/S1003-6326(24)66589-1

Ya-xin LI , Hong-xiao YANG , Qiu-ping ZHANG , Tian-zhen JIAN , Wen-qing MA , Cai-xia XU , Qiu-xia ZHOU

{"title":"In-situ building of multiscale porous NiFeZn/NiZn-Ni heterojunction for superior overall water splitting","authors":"Ya-xin LI , Hong-xiao YANG , Qiu-ping ZHANG , Tian-zhen JIAN , Wen-qing MA , Cai-xia XU , Qiu-xia ZHOU","doi":"10.1016/S1003-6326(24)66589-1","DOIUrl":"10.1016/S1003-6326(24)66589-1","url":null,"abstract":"<div><div>The development of efficient nonprecious bifunctional electrocatalysts for water electrolysis is crucial to enhance the sluggish kinetics of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). A self-supporting, multiscale porous NiFeZn/NiZn-Ni catalyst with a triple interface heterojunction on nickel foam (NF) (NiFeZn/NiZn-Ni/NF) was in-situ fabricated using an electroplating−annealing−etching strategy. The unique multi- interface engineering and three-dimensional porous scaffold significantly modify the mass transport and electron interaction, resulting in superior bifunctional electrocatalytic performance for water splitting. The NiFeZn/NiZn-Ni/NF catalyst demonstrates low overpotentials of 187 mV for HER and 320 mV for OER at a current density of 600 mA/cm², along with high durability over 150 h in alkaline solution. Furthermore, an electrolytic cell assembled with NiFeZn/NiZn-Ni/NF as both the cathode and anode achieves the current densities of 600 and 1000 mA/cm<sup>2</sup> at cell voltages of 1.796 and 1.901 V, respectively, maintaining the high stability at 50 mA/cm<sup>2</sup> for over 100 h. These findings highlight the potential of NiFeZn/NiZn-Ni/NF as a cost-effective and highly efficient bifunctional electrocatalyst for overall water splitting.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2972-2986"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531406","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