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Effect of dilute atom Gd on critical resolved shear stress and anisotropic deformation mechanism of Mg-Gd alloy

文献类型：期刊论文

作者Li, Na4,6; Li, Yuqiong4,5,6; Wang, Chuanyun3; Shi, Dongfeng2; Yang, Lingwei1; Li YQ(李玉琼); Li YQ(李玉琼)
刊名MATERIALS TODAY COMMUNICATIONS
出版日期2024-03-01
卷号38页码:5
关键词Mg alloys Solid solution Critical resolved shear stress Micropillar compression
DOI10.1016/j.mtcomm.2023.107630
通讯作者Li, Yuqiong(liyuqiong@imech.ac.cn) ; Yang, Lingwei(lingwei.yang@outlook.com)
英文摘要Formability and ductility of Mg alloy are highly dependent on its mechanical anisotropy and are mainly dominated by the anisotropic deformations of basal slip, tension twining and non-basal slips. This work is engaged to measuring critical resolved shear stress (CRSS) for basal slip, twin nucleation/growth and pyramidal slip of a Mg-1 wt% Gd alloy by micropillar compressions. The effects of rare earth (RE) element, Gd, on the CRSS and the deformation mechanisms are discussed, and the mechanical anisotropy is determined. The results suggest that Gd atom is capable of balancing the anisotropy ratio of hard mode to soft mode, by triggering significant strengthening in basal slip of Mg alloy. The strengthening effect is related to the misfit-volume induced fluctuations in solute concentrations and the wavy solutes/dislocation interaction energies when Gd is added. As a result, Gd solute is advantageous to reduce the mechanical anisotropy, thus benefits to formability and ductility of Mg alloys. The presented results can provide a framework to understand basically the physical origin of mechanical anisotropy and formability of Mg-RE alloys and can be guidelines to design high ductility Mg alloys for next-generation lunar exploration.
WOS关键词STACKING-FAULT ENERGIES ; BASAL SLIP ; MAGNESIUM ; DUCTILITY ; TEMPERATURE ; SIZE ; AL ; IMPROVEMENT ; NUCLEATION ; SOLUTES
资助项目Youth Innovation Promotion Association of the Chinese Academy of Sciences[Y2022009] ; National Natural Science Foundation of China[61575209] ; High-level Innovation Research Institute Pro-gram of Guangdong Province[2020B0909010003]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:001128342800001
资助机构Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; High-level Innovation Research Institute Pro-gram of Guangdong Province
源URL[http://dspace.imech.ac.cn/handle/311007/93752]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Li, Yuqiong; Yang, Lingwei
作者单位1.China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang 621000, Peoples R China
2.Cent South Univ, Light Alloy Res Inst, Changsha 410083, Peoples R China
3.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
4.Guangdong Aerosp Res Acad, Guangzhou 511458, Peoples R China
5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
6.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst LMFS, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Li, Na,Li, Yuqiong,Wang, Chuanyun,et al. Effect of dilute atom Gd on critical resolved shear stress and anisotropic deformation mechanism of Mg-Gd alloy[J]. MATERIALS TODAY COMMUNICATIONS,2024,38:5.
APA Li, Na.,Li, Yuqiong.,Wang, Chuanyun.,Shi, Dongfeng.,Yang, Lingwei.,...&李玉琼.(2024).Effect of dilute atom Gd on critical resolved shear stress and anisotropic deformation mechanism of Mg-Gd alloy.MATERIALS TODAY COMMUNICATIONS,38,5.
MLA Li, Na,et al."Effect of dilute atom Gd on critical resolved shear stress and anisotropic deformation mechanism of Mg-Gd alloy".MATERIALS TODAY COMMUNICATIONS 38(2024):5.

入库方式： OAI收割

来源：力学研究所

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