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

Effect of deformation temperature on microstructure and texture of AZ31 magnesium alloy processed by new plastic deformation method 变形温度对新型塑性变形法加工的 AZ31 镁合金微观结构和纹理的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-07-01 DOI: 10.1016/S1003-6326(24)66530-1

Yu-tian FAN , Li-wei LU , Jian-bo LIU , Min MA , Wei-ying HUANG , Rui-zhi WU

{"title":"Effect of deformation temperature on microstructure and texture of AZ31 magnesium alloy processed by new plastic deformation method","authors":"Yu-tian FAN , Li-wei LU , Jian-bo LIU , Min MA , Wei-ying HUANG , Rui-zhi WU","doi":"10.1016/S1003-6326(24)66530-1","DOIUrl":"10.1016/S1003-6326(24)66530-1","url":null,"abstract":"<div>A new method of repeated upsetting−extrusion (RUE) deformation was presented. The effects of different deformation temperatures on the microstructure and texture of RUE deformed AZ31 magnesium (Mg) alloy were studied using optical microscopy (OM), X-ray diffraction (XRD), electron backscatter diffraction (EBSD), and Vickers hardness tester. The results show that the microstructure of the AZ31 Mg alloy is locally refined to 0.8 μm after RUE deformation, and the main refinement mechanism is the continuous dynamic recrystallization (CDRX). As the temperature increases, the texture of basal plane parallel to shearing plane is formed firstly, followed by texture with weaker intensity, and finally and textures. The texture split is caused by the dislocation slip of basal 〈a〉 and pyramidal 〈a〉. The maximum hardness of the AZ31 Mg alloy after RUE deformation is increased by 42.4% compared with that at the initial state, which is mainly due to the fine-grained strengthening and the dislocation strengthening.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 7","pages":"Pages 2138-2152"},"PeriodicalIF":4.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665301/pdf?md5=f62f5e49e3579df4be69d6273fa4d620&pid=1-s2.0-S1003632624665301-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848771","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

Fabrication of Al coating for corrosion protection of Mg−Zn−Al−Sn−Mn alloy based on cold spraying process 基于冷喷涂工艺制作用于保护镁锌铝锡锰合金的铝涂层

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-07-01 DOI: 10.1016/S1003-6326(24)66531-3

Liang CHEN, Yi-hao BAO, Zhi-gang LI, Li-hua QIAN, Guo-qun ZHAO, Cun-sheng ZHANG

{"title":"Fabrication of Al coating for corrosion protection of Mg−Zn−Al−Sn−Mn alloy based on cold spraying process","authors":"Liang CHEN, Yi-hao BAO, Zhi-gang LI, Li-hua QIAN, Guo-qun ZHAO, Cun-sheng ZHANG","doi":"10.1016/S1003-6326(24)66531-3","DOIUrl":"10.1016/S1003-6326(24)66531-3","url":null,"abstract":"<div>Al coating was fabricated on the surface of Mg−Zn−Al−Sn−Mn alloy by cold spraying process to enhance its corrosion resistance. The effects of temperature and pressure of working gas on the microstructure and corrosion behaviors of Al coating were investigated. The results show that as gas temperature and pressure increase, the densification and thickness of Al coating obviously increase. High gas temperature declines the critical velocity of powder deposition and increases the deposition efficiency. High gas pressure not only improves the quality of mechanical bonding, but also provides strong tamping effect on the deposited coating. Due to the reduction of porosity, the corrosion resistance of Al coating is improved with the increase of gas temperature and pressure. The corrosion products of Al(OH)3 and Al2O3 can block the pores in Al coating and act as physical barriers to corrosion, which effectively protects Mg alloy from being corroded.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 7","pages":"Pages 2153-2166"},"PeriodicalIF":4.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665313/pdf?md5=474399337a899e9a9034b4ad21c85676&pid=1-s2.0-S1003632624665313-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845192","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

DFT study of sulfidization mechanism of cerussite (PbCO3) and smithsonite (ZnCO3) Cerussite (PbCO3) 和 smithsonite (ZnCO3) 硫化机理的 DFT 研究

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-07-01 DOI: 10.1016/S1003-6326(24)66544-1

Ye CHEN , Xiao-qin TANG , Jian-hua CHEN , Meng LIU

{"title":"DFT study of sulfidization mechanism of cerussite (PbCO3) and smithsonite (ZnCO3)","authors":"Ye CHEN , Xiao-qin TANG , Jian-hua CHEN , Meng LIU","doi":"10.1016/S1003-6326(24)66544-1","DOIUrl":"10.1016/S1003-6326(24)66544-1","url":null,"abstract":"<div>The differences in the sulfidization mechanism of cerussite (PbCO3) and smithsonite (ZnCO3) were comparatively studied by the density functional theory (DFT) method. Pb−S/Zn−S layers over PbCO3/ZnCO3 surfaces are constructed to simulate the sulfidization structure. The results of layer distance and Mulliken charge suggest that Pb−S layer formed over PbCO3 is stable but Zn−S layer formed over ZnCO3 is unstable. Because of the high covalency of Pb−S layer and the high ionicity of Zn−S layer, the sulfidization−xanthate method is effective for cerussite but ineffective for smithsonite flotation. To recover smithsonite, strong ionicity collectors are required, and hence the sulfidization−amine method is applied more to smithsonite flotation. These differences in the sulfide layer structure and flotation behavior of PbCO3 and ZnCO3 surfaces are mainly attributed to the different polarizabilities of the metal ions (Pb2+ and Zn2+) and the ligands (O ligand and S ligand) and the inertness of Zn2+ 3d10 orbital.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 7","pages":"Pages 2328-2341"},"PeriodicalIF":4.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665441/pdf?md5=c85e8ef3747ccd0f77534db8482445fa&pid=1-s2.0-S1003632624665441-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847840","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 Mg−Gd−Y−Zn−Zr alloy plates with different initial textures after hot rolling 热轧后不同初始纹理的 Mg-Gd-Y-Zn-Zr 合金板材的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 : 2024-06-01 DOI: 10.1016/S1003-6326(24)66508-8

Han CHEN, Zhang HU, Yu-xiang HAN, Tao CHEN, Chu-ming LIU, Zhi-yong CHEN

{"title":"Microstructure and mechanical properties of Mg−Gd−Y−Zn−Zr alloy plates with different initial textures after hot rolling","authors":"Han CHEN, Zhang HU, Yu-xiang HAN, Tao CHEN, Chu-ming LIU, Zhi-yong CHEN","doi":"10.1016/S1003-6326(24)66508-8","DOIUrl":"10.1016/S1003-6326(24)66508-8","url":null,"abstract":"<div>The effects of initial textures on the microstructures and mechanical properties of rolled Mg−4.7Gd− 3.4Y−1.2Zn−0.5Zr (wt.%) plates were studied by optical microscope (OM), scanning electron microscope (SEM), electron backscatter diffraction (EBSD), transmission electron microscope (TEM) and tensile test. In the plate with an initial texture of 〈0001〉//RD (rolling direction), relatively coarse grains and bimodal basal texture are developed. However, in the plate with an initial texture of 〈0001〉//TD (transverse direction), finer grain size and strong 〈0001〉//ND basal textures are obtained due to the higher degree of dynamic recrystallization during rolling. Additionally, the irregular-shaped long-period stacking ordered (LPSO) phases are elongated along RD in both plates, which results in anisotropic load-bearing strengthening behavior, and further leads to a certain degree of yield anisotropy. The analysis of the strengthening mechanism shows that grain boundary strengthening is the most effective strengthening method in the plates. Because of the finer grain size and the strengthening caused by the elongated irregular-shaped LPSO phases, the rolled plate with an initial 〈0001〉//TD texture achieves the highest yield strength along RD.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1804-1816"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665088/pdf?md5=4e6228c344fc16bb77a3f779a45d126c&pid=1-s2.0-S1003632624665088-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729498","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

Clarification of two-parameter models for correlating grain size to phase diagram variables in hypoeutectic alloys 澄清次共晶合金中晶粒尺寸与相图变量相关性的双参数模型

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-06-01 DOI: 10.1016/S1003-6326(24)66502-7

Da-shan SUI , Qing-you HAN

{"title":"Clarification of two-parameter models for correlating grain size to phase diagram variables in hypoeutectic alloys","authors":"Da-shan SUI , Qing-you HAN","doi":"10.1016/S1003-6326(24)66502-7","DOIUrl":"10.1016/S1003-6326(24)66502-7","url":null,"abstract":"<div>Simple two-parameter models were proposed for correlating grain size to process conditions and phase diagram variables. However, these models have not been fully examined using data obtained from well controlled experiments. This work intended to clarify these models with selected experimental data obtained in dilute hypoeutectic alloys. Criteria for data selected were proposed. The selected experimental data were fitted by these models to examine curve fitting quality and the applicability. Models that fit experimental data better were identified. Mechanisms by which grain size is reduced under the influence of a solute element were examined based on the data analysis. Results suggest that there is a clear dependence of grain size on the solidification interval of an alloy, which can be expressed as the P variable. Such a clear dependence of grain size on solidification interval indicates that mechanisms that are associated with dendrite fragmentation are the dominant operating mechanisms governing grain refinement by solute element in ingots and castings where convection in the molten alloy exists during its mold filling and solidification.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1721-1733"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665027/pdf?md5=80f7f3dde40e35bb709cf5144e2f303a&pid=1-s2.0-S1003632624665027-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729492","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

Phase transformation in solid-state reaction of MgO−V2O5 binary system and dissolution behavior of products 氧化镁-V2O5 二元体系固态反应中的相变及产物的溶解行为

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-06-01 DOI: 10.1016/S1003-6326(24)66521-0

Jun-yi XIANG , Ming-shuai LUO , Lu-wei BAI , Xi LU , Zhong-peng ZHU , Qing-yun HUANG , Kui-song ZHU , Gui-shang PEI , Xue-wei LÜ

{"title":"Phase transformation in solid-state reaction of MgO−V2O5 binary system and dissolution behavior of products","authors":"Jun-yi XIANG , Ming-shuai LUO , Lu-wei BAI , Xi LU , Zhong-peng ZHU , Qing-yun HUANG , Kui-song ZHU , Gui-shang PEI , Xue-wei LÜ","doi":"10.1016/S1003-6326(24)66521-0","DOIUrl":"10.1016/S1003-6326(24)66521-0","url":null,"abstract":"<div>The solid-state reaction behavior of MgO−V2O5 mixtures with different molar ratios was explored. The solubility of the solid-state reaction products (magnesium vanadates) in water at 25−55 °C was measured using the isothermal solution saturation method. The dissolution behavior and kinetics of the magnesium vanadates in dilute sulfuric acid were also investigated. The results showed that the molar ratio of MgO to V2O5 and roasting temperature significantly influenced the phase transformation of the solid-state reaction product. MgV2O6 exhibits the highest solubility in water, followed by Mg2V2O7 and Mg3V2O8. The dissolution rate of magnesium vanadates in dilute sulfuric was significantly increased with the decrease of pH from 4.0 to 2.5 and the temperature increase from 30 to 70 °C. The dissolution of magnesium vanadate can be described using a second-order pseudo-homogeneous reaction model.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1994-2006"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665210/pdf?md5=3c75744c01f2b5670ed9cbdc522c5729&pid=1-s2.0-S1003632624665210-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729643","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

Role of transition metal ratio on electrochemical and thermal properties of LiNixCoyMnzO2 layered materials for lithium-ion batteries 过渡金属比例对锂离子电池用 LiNixCoyMnzO2 层状材料的电化学和热学特性的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-06-01 DOI: 10.1016/S1003-6326(24)66517-9

Chen LIANG , Bang TONG , Shi LI , Ze-sen WEI , Jin-hua SUN , Qing-song WANG

{"title":"Role of transition metal ratio on electrochemical and thermal properties of LiNixCoyMnzO2 layered materials for lithium-ion batteries","authors":"Chen LIANG , Bang TONG , Shi LI , Ze-sen WEI , Jin-hua SUN , Qing-song WANG","doi":"10.1016/S1003-6326(24)66517-9","DOIUrl":"10.1016/S1003-6326(24)66517-9","url":null,"abstract":"<div>To reveal how the performance of LiNixCoyMnzO2 (NCM) changes as a function of transition metal (TM) composition, the effect of TM ratio on the structure, morphology, electrochemical performance and thermal behavior of different NCMs was systematically investigated. Increasing Ni content leads to higher reversible capacity but worse rate capability and cycling stability. Inhibited kinetics of Li+ and poor electronic conductivity cause major capacity loss in Ni-rich NCMs. Comparison of thermal behaviors was carried out via in-situ and ex-situ micro-calorimetry. With the decrease of Ni content, the thermal stability is significantly improved. The oxygen release related to phase transitions was evaluated based on Li residuals in delithiated NCMs, which verifies that Ni-rich materials exhibit severer structural deterioration, lower onset temperature and more heat release. Comprehensive characterization identifies that LiNi0.5Co0.3Mn0.2O2 strikes a well-balanced combination of electrochemical performance and safety features.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1936-1950"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665179/pdf?md5=4106d22c3df9cf382b30a06b839cea31&pid=1-s2.0-S1003632624665179-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729555","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 rolling reduction on corrosion behavior of WE43 alloy 轧制还原对 WE43 合金腐蚀行为的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-06-01 DOI: 10.1016/S1003-6326(24)66510-6

Yong CAI , Yi-peng CHEN , Hong YAN , Zhi-wei SHAN , Yao-zong MAO , Rong-shi CHEN

{"title":"Influence of rolling reduction on corrosion behavior of WE43 alloy","authors":"Yong CAI , Yi-peng CHEN , Hong YAN , Zhi-wei SHAN , Yao-zong MAO , Rong-shi CHEN","doi":"10.1016/S1003-6326(24)66510-6","DOIUrl":"10.1016/S1003-6326(24)66510-6","url":null,"abstract":"<div>The corrosion behavior of WE43 alloy with different rolling reductions (0%, 25%, 45%, and 80%) at 500 °C was investigated in 3.5 wt.% NaCl solution. The microstructure evolution of the rolled WE43 alloy was characterized in detail by means of optical microscopy (OM), transmission electron microscopy (TEM) and electron back-scattered diffraction (EBSD). The results show that with increasing reductions, basal texture is gradually enhanced and grain size gradually decreases. Only the alloy with 45% reduction exhibits dispersed dynamic precipitates. Immersion and electrochemical measurements demonstrate the decreasing order of the corrosion resistance of the rolled WE43 alloy: 45% reduction > 80% reduction > 25% reduction > 0 reduction. The best corrosion resistance of the WE43 alloy with 45% reduction is mainly related to a large number of finely dispersed precipitates, which are capable of promoting the formation of a compact corrosion product layer. The increased corrosion rate of the sample with 80% reduction is induced by the re-solution of the majority of precipitates into the matrix. The grain size, basal texture and deformation twins have a limited effect on the corrosion resistance of rolled WE43 alloy compared with the precipitates.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1829-1842"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665106/pdf?md5=fda9c5511275ebabeabd00d4aff2e604&pid=1-s2.0-S1003632624665106-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729500","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 annealing temperature on microstructural evolution and tensile behavior of Ti−6Al−4V alloy manufactured by multi-directional forging 退火温度对多向锻造 Ti-6Al-4V 合金微观结构演变和拉伸行为的影响

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-06-01 DOI: 10.1016/S1003-6326(24)66512-X

Shi-shuang LIU, Jian-ming CAI, Yi ZHOU, Jing-xia CAO, Wang-feng ZHANG, Sheng-long DAI, Xu HUANG, Chun-xiao CAO

{"title":"Influence of annealing temperature on microstructural evolution and tensile behavior of Ti−6Al−4V alloy manufactured by multi-directional forging","authors":"Shi-shuang LIU, Jian-ming CAI, Yi ZHOU, Jing-xia CAO, Wang-feng ZHANG, Sheng-long DAI, Xu HUANG, Chun-xiao CAO","doi":"10.1016/S1003-6326(24)66512-X","DOIUrl":"10.1016/S1003-6326(24)66512-X","url":null,"abstract":"<div>A range of annealing treatments were implemented to regulate the microstructure and mechanical properties of Ti−6Al−4V forging. The results show that both the as-forged and as-annealed microstructures exhibit a bimodal structure composed of equiaxed primary α phase (αp) and transformed β phase (βt). With the increase of annealing temperature, the secondary α (αs) phase precipitates from the β phase. There is no obvious texture and the crystal orientation is uniformly distributed. Meanwhile, strength initially increases and then decreases, whereas ductility remains largely unaffected. The alloy annealed at 860 °C has an excellent combination of strength and ductility, due to the larger content of the fine αs phase. All fracture surfaces contain massive dimples, which is a typical ductile fracture feature. The characteristics of microcracks, microvoids, and kinked αp/αl (equiaxed αp and lamellar α phase) phases are found near the fracture.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1864-1877"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S100363262466512X/pdf?md5=b48c2cd2cf778dff36ba757fe3417424&pid=1-s2.0-S100363262466512X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729502","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

Heterogeneous microstructure and mechanical properties of carbon-doped FeCoCrNiMn high-entropy alloy 掺碳铁钴铬镍锰高熵合金的异质微观结构和力学性能

IF 4.7 1区材料科学

Transactions of Nonferrous Metals Society of China Pub Date : 2024-06-01 DOI: 10.1016/S1003-6326(24)66514-3

Lin GUO , Ji GU , Yi-long DAI , Jian-guo LIN , Min SONG

{"title":"Heterogeneous microstructure and mechanical properties of carbon-doped FeCoCrNiMn high-entropy alloy","authors":"Lin GUO , Ji GU , Yi-long DAI , Jian-guo LIN , Min SONG","doi":"10.1016/S1003-6326(24)66514-3","DOIUrl":"10.1016/S1003-6326(24)66514-3","url":null,"abstract":"<div>Heterogeneous microstructure with nano-precipitate and bimodal grain size distribution was obtained in a FeCoCrNiMn high-entropy alloy (HEA) doped with 0.5 at.% C by a controlled thermo-mechanical treatment. The coarse M23C6 carbides tend to aggregate along the fine grain boundaries. Compared to the sample with homogenous microstructure, the heterostructure FeCoCrNiMn−0.5at.%C HEA has approximately the same average grain size of 4.8 μm. However, it shows bimodal grain size distribution and higher volume fraction of the fine grains (<3 μm), resulting in the increase of yield strength from 552 to 632 MPa. The sample with heterostructure presents different mechanical responses and deformed microstructures in different regions, accounting for significant strain localization and high density of the geometrically necessary dislocations during tensile deformation. These deformation characteristics are beneficial to the enhancement of strain hardening capacity, thereby promoting strength−ductility synergy.</div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 6","pages":"Pages 1893-1907"},"PeriodicalIF":4.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1003632624665143/pdf?md5=7444f9902a6c943f0ea7116b7dc07cd1&pid=1-s2.0-S1003632624665143-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729552","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