| Effect of dilute atom Gd on critical resolved shear stress and anisotropic deformation mechanism of Mg-Gd alloy | |
Li N(李娜)1,3; Li YQ(李玉琼)1,2,3 ; Wang, Chuanyun4; Shi, Dongfeng5; Yang, Lingwei6
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| Corresponding Author | Li, Yuqiong([email protected]) ; Yang, Lingwei([email protected]) |
| Source Publication | MATERIALS TODAY COMMUNICATIONS
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| 2024-03-01 | |
| Volume | 38Pages:5 |
| Abstract | 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. |
| Keyword | Mg alloys Solid solution Critical resolved shear stress Micropillar compression |
| DOI | 10.1016/j.mtcomm.2023.107630 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001128342800001 |
| WOS Keyword | STACKING-FAULT ENERGIES ; BASAL SLIP ; MAGNESIUM ; DUCTILITY ; TEMPERATURE ; SIZE ; AL ; IMPROVEMENT ; NUCLEATION ; SOLUTES |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Li, Yuqiong ; Yang, Lingwei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/93753 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst LMFS, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Guangdong Aerosp Res Acad, Guangzhou 511458, Peoples R China; 4.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China; 5.Cent South Univ, Light Alloy Res Inst, Changsha 410083, Peoples R China; 6.China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang 621000, Peoples R China |
| Recommended Citation GB/T 7714 | Li N,Li YQ,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.Rp_Au:Li, Yuqiong, Yang, Lingwei |
| APA | 李娜,李玉琼,Wang, Chuanyun,Shi, Dongfeng,&Yang, Lingwei.(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 | 李娜,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. |
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