Transactions of Nonferrous Metals Society of China最新文献_第10页

Atomic-scale insights into microscopic mechanisms of grain boundary segregation in Al−Cu alloys Al - Cu合金晶界偏析微观机制的原子尺度研究

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-01-01 DOI: 10.1016/S1003-6326(24)66661-6

Xiong SHUAI , Hong MAO , Sai TANG , Yi KONG , Yong DU

{"title":"Atomic-scale insights into microscopic mechanisms of grain boundary segregation in Al−Cu alloys","authors":"Xiong SHUAI , Hong MAO , Sai TANG , Yi KONG , Yong DU","doi":"10.1016/S1003-6326(24)66661-6","DOIUrl":"10.1016/S1003-6326(24)66661-6","url":null,"abstract":"<div><div>This study aims to clarify the mechanisms for the grain boundary (GB) segregation through investigating the absorption of excess solute atoms at GBs in Al−Cu alloys by using the hybrid molecular dynamics/Monte Carlo simulations. Two segregation mechanisms, substitutional and interstitial mechanisms, are observed. The intergranular defects, including dislocations, steps and vacancies, and the intervals in structural units are conductive to the prevalence of interstitial mechanism. And substitutional mechanism is favored by the highly ordered twin GBs. Furthermore, the two mechanisms affect the GB structure differently. It is quantified that interstitial mechanism is less destructive to GB structure than substitutional one, and often leads to a segregation level being up to about 6 times higher than the latter. These findings contribute to atomic scale insights into the microscopic mechanisms about how solute atoms are absorbed by GB structures, and clarify the correlation among intergranular structures, segregation mechanisms and kinetics.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 1","pages":"Pages 1-12"},"PeriodicalIF":4.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161173","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

Predictor−corrector inverse design scheme for property−composition prediction of amorphous alloys 非晶合金性能成分预测的预测校正逆设计方案

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-01-01 DOI: 10.1016/S1003-6326(24)66672-0

Tao LONG , Zhi-lin LONG , Bo PANG

引用次数: 0

Influence of Al, Cu and Mn additions on diffusion behaviors in CoCrFeNi high-entropy alloys Al、Cu和Mn添加量对CoCrFeNi高熵合金扩散行为的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-01-01 DOI: 10.1016/S1003-6326(24)66673-2

Juan CHEN , Zhen-zhong ZHANG , Jin-kun XIAO , Li-jun ZHANG

引用次数: 0

Flow behavior and dynamic softening mechanism of Pt−10Ir precious alloy Pt−10Ir贵重合金的流动行为及动态软化机理

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2025-01-01 DOI: 10.1016/S1003-6326(24)66676-8

Xin-pei ZHANG , Jun-jie HE , Lin PI , Quan FU , Wen-yan ZHOU , Jun CHENG , Sheng-wen BAI , Xuan ZHOU , Yi LIU , Yong MAO

引用次数: 0

Recovery of zinc and lead by simultaneously leaching from lead slag fuming dust with ammonium chloride solution 用氯化铵溶液同时浸出铅渣发烟粉尘回收锌铅

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI: 10.1016/S1003-6326(24)66659-8

Zhen-biao LI, Zhi-mei XIA, Shu-fen LIU, Long-gang YE, Jing-hao QI, Xiong-mei LI

{"title":"Recovery of zinc and lead by simultaneously leaching from lead slag fuming dust with ammonium chloride solution","authors":"Zhen-biao LI, Zhi-mei XIA, Shu-fen LIU, Long-gang YE, Jing-hao QI, Xiong-mei LI","doi":"10.1016/S1003-6326(24)66659-8","DOIUrl":"10.1016/S1003-6326(24)66659-8","url":null,"abstract":"<div><div>The effects of leaching temperature (60−105 °C), NH<sub>4</sub>Cl concentration (3−7 mol/L), liquid/solid ratio (4:1−12:1 mL/g), stirring speed (150−750 r/min), and leaching time (5−90 min) on the leaching rates of Zn and Pb were investigated. The leaching kinetics of Zn- and Pb-rich fuming dust with a NH<sub>4</sub>Cl solution was also studied. The leaching rates of Zn and Pb respectively reached 98.2% and 75.6% at leaching temperature of 100 °C, an NH<sub>4</sub>Cl concentration of 7.0 mol/L, a liquid/solid ratio of 10:1 mL/g, a stirring speed of 450 r/min and leaching time of 60 min. The kinetics results indicate that the leaching of Zn and Pb conforms to the shrinking unreacted core model and is controlled by the internal diffusion of NH<sub>4</sub>Cl through the reacted fuming dust layer and external diffusion of NH<sub>4</sub>Cl through the leaching solution boundary layer, respectively. The apparent activation energies of Zn and Pb are 23.922 and 19.139 kJ/mol, respectively. This study demonstrates that the use of NH<sub>4</sub>Cl solution, without ammonia, is an environmentally friendly method for simultaneous extracting Zn and Pb from the fuming dust of lead blast furnace slag.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 4075-4084"},"PeriodicalIF":4.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200740","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

Influence of tartrate on leaching interface of low-grade polymetallic complex chalcopyrite ore 酒石酸盐对低品位多金属复合体黄铜矿浸出界面的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI: 10.1016/S1003-6326(24)66657-4

Xin-Jie LIU, Ya-long LIAO, Qing-feng LIU, Min WU

引用次数: 0

Effects of solute supersaturation and re-precipitation on microstructure and mechanical properties of selective laser melted Al−Mn−Mg−Sc−Zr alloys 溶质过饱和和再析出对选择性激光熔化Al - Mn - Mg - Sc - Zr合金组织和力学性能的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI: 10.1016/S1003-6326(24)66643-4

Ying DENG , Yi LAI , Jia-shun CHEN , Yuan-hao XU , Jun-chang CAO , Rui-yin HUANG , Jia-qi DUAN

{"title":"Effects of solute supersaturation and re-precipitation on microstructure and mechanical properties of selective laser melted Al−Mn−Mg−Sc−Zr alloys","authors":"Ying DENG , Yi LAI , Jia-shun CHEN , Yuan-hao XU , Jun-chang CAO , Rui-yin HUANG , Jia-qi DUAN","doi":"10.1016/S1003-6326(24)66643-4","DOIUrl":"10.1016/S1003-6326(24)66643-4","url":null,"abstract":"<div><div>A new Al−4.87Mn−1.42Mg−0.63Sc−0.20Zr (wt.%) alloy was fabricated by selective laser melting (SLM) and its microstructure and mechanical properties before and after aging were investigated. The results show that at a laser power input of 300 W, increasing laser scanning speeds from 700 to 1500 mm/s improves the mechanical properties. In the meantime, the lattice distortion values increase from 0.15% to 0.31%, showing an increasing solute supersaturation. At a laser scanning speed of 1500 mm/s, the yield strength, ultimate tensile strength and elongation of the as-SLM alloys are 356 MPa, 412 MPa and 17.7%, respectively. After aging at 350 °C for 8 h, these values increase to 527 MPa, 554 MPa and 10.4%, respectively. The contributions to the yield strength increments from the secondary Al<sub>6</sub>(Fe, Mn) needle-like phase and re-precipitated L1<sub>2</sub> structured Al<sub>6</sub>(Sc, Zr, Ti) nano-particles during aging are 74 and 79 MPa, respectively. As the aging temperature increases to 450 °C, the dominant precipitation strengthening is attributed to the secondary Al<sub>6</sub>(Sc, Zr, Ti) nano-particles.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 3846-3861"},"PeriodicalIF":4.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200889","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

Effect of Mo substitution of Fe on strength and corrosion resistance of AlCoCrFe1−xNiMox high-entropy alloys Mo取代Fe对AlCoCrFe1−xNiMox高熵合金强度和耐蚀性的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI: 10.1016/S1003-6326(24)66650-1

Hong-qi SHI , Xiao-di JI , Dong-hui JIAN , Tian-shuo XU , Chen WANG , Tao TANG , Wen-juan LIU , Zhen-hua CAO

{"title":"Effect of Mo substitution of Fe on strength and corrosion resistance of AlCoCrFe1−xNiMox high-entropy alloys","authors":"Hong-qi SHI , Xiao-di JI , Dong-hui JIAN , Tian-shuo XU , Chen WANG , Tao TANG , Wen-juan LIU , Zhen-hua CAO","doi":"10.1016/S1003-6326(24)66650-1","DOIUrl":"10.1016/S1003-6326(24)66650-1","url":null,"abstract":"<div><div>A series of AlCoCrFe<sub>1−<em>x</em></sub>NiMo<sub><em>x</em></sub> high-entropy alloys (HEAs) were fabricated and characterized by XRD, SEM, EDS mapping, compression test, hardness and electrochemistry measurements. The research results indicate that after Mo completely replaces Fe, the compressive strength of the alloys can reach 3181 MPa because the addition of Mo can form <em>σ</em> phase beneficial to the grain refinement, thereby improving the strength of the alloys. However, the addition of Mo has a detrimental effect on corrosion resistance as a result of formation of galvanic cell between the substrate and <em>σ</em> phases. Although most of AlCoCrFe<sub>1−<em>x</em></sub>NiMo<sub><em>x</em></sub> have lower corrosion current densities than pristine alloy, a partial Mo substitution (<em>x</em>=0.25) widens the passivation region of HEAs. The inconsistency of mechanical properties with corrosion resistance is ascribed to different roles of Mo in phase formation and protection of passive film.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 3949-3962"},"PeriodicalIF":4.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200675","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 and electrical properties of multi-walled carbon nanotubes reinforced Cu/Ti3SiC2/C nanocomposites via high-pressure torsion 高压扭转增强多壁碳纳米管增强Cu/Ti3SiC2/C纳米复合材料的力学和电学性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI: 10.1016/S1003-6326(24)66654-9

Zi-xuan WU , Pei-fan ZHANG , Xiao-song JIANG , Hong-liang SUN , Yan-jun LI , Pål CHRISTIAN , Liu YANG

{"title":"Enhanced mechanical and electrical properties of multi-walled carbon nanotubes reinforced Cu/Ti3SiC2/C nanocomposites via high-pressure torsion","authors":"Zi-xuan WU , Pei-fan ZHANG , Xiao-song JIANG , Hong-liang SUN , Yan-jun LI , Pål CHRISTIAN , Liu YANG","doi":"10.1016/S1003-6326(24)66654-9","DOIUrl":"10.1016/S1003-6326(24)66654-9","url":null,"abstract":"<div><div>In order to achieve combined mechanical and electrical properties, multi-walled carbon nanotubes (MWCNTs) reinforced Cu/Ti<sub>3</sub>SiC<sub>2</sub>/C nanocomposites were further processed by high-pressure torsion (HPT). The maximum microhardness values of central and edge from the composites with 1 wt.% MWCNTs reached HV 130.0 and HV 363.5, which were 43.9% and 39.5% higher than those of the original samples, respectively. With the same content of MWCNTs, its electrical conductivity achieved 3.42×10<sup>7</sup> S/m, which was increased by 78.1% compared with that of original samples. The synergistic improvement of mechanical and electrical properties is attributed to the obtained microstructure with increased homogenization and refinement, as well as improved interfacial bonding and reduced porosity. The strengthening mechanisms include dispersion and refinement strengthening for mechanical properties, as well as reduced electron scattering for electrical properties.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 4005-4019"},"PeriodicalIF":4.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200676","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

Improvement of crystal structure and electrical performance of NASICON-type NaTi2(PO4)3 solid electrolyte by doping Cr3+ ions 掺杂Cr3+离子改善nasicon型NaTi2(PO4)3固体电解质的晶体结构和电性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI: 10.1016/S1003-6326(24)66655-0

Cheng-jian WEN, Zhi-wei LUO, Xin-yu LIU, Ju-xia TONG, Pan HE, An-xian LU

{"title":"Improvement of crystal structure and electrical performance of NASICON-type NaTi2(PO4)3 solid electrolyte by doping Cr3+ ions","authors":"Cheng-jian WEN, Zhi-wei LUO, Xin-yu LIU, Ju-xia TONG, Pan HE, An-xian LU","doi":"10.1016/S1003-6326(24)66655-0","DOIUrl":"10.1016/S1003-6326(24)66655-0","url":null,"abstract":"<div><div>A series of Cr<sup>3+</sup>-substituted Na<sub>1+<em>x</em></sub>Ti<sub>2−<em>x</em></sub>Cr<sub><em>x</em></sub>P<sub>3</sub>O<sub>12</sub> (<em>x</em>=0.1, 0.2, 0.3, 0.4, 0.5, molar fraction) solid electrolytes were prepared by the solid-phase reaction method. The effects of Cr<sup>3+</sup> ions on the phase composition, microstructure, and electrochemical ion conductivity of Na-based conductors were studied using X-ray powder diffraction, field emission scanning electron microscopy, and AC impedance measurement. The results show that the main crystal phase of NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> is formed in the solid electrolytes. The substitution of Ti<sup>4+</sup> sites by 15 at.% Cr<sup>3+</sup> ions contributes to the enhancement of electrical conductivity, which is attributed to the combined effect of suppressing the formation of impurity phases, broadening ion channels, and improving the bonding degree of grains. Na<sub>1.3</sub>Ti<sub>1.7</sub>Cr<sub>0.3</sub>P<sub>3</sub>O<sub>12</sub> electrolyte can obtain the best ionic conductivity of 6.13×10<sup>−6</sup> S/cm at room temperature, which is 8 times that of the undoped NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> electrolyte.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 12","pages":"Pages 4020-4031"},"PeriodicalIF":4.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143200747","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