| Solid solution and precipitation strengthening effects in basal slip, extension twinning and pyramidal slip in Mg-Zn alloys | |
Li N1,2 ; Wang C3; Monclus MA1; Yang L4; Molina-Aldareguia JM1
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| Corresponding Author | Yang, L.([email protected]) ; Molina-Aldareguia, J. M.([email protected]) |
| Source Publication | ACTA MATERIALIA
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| 2021-12-01 | |
| Volume | 221Pages:11 |
| ISSN | 1359-6454 |
| Abstract | A high-throughput methodology is proposed, based on the combination of diffusion couples and ad-vanced nanomechanical testing methods, to directly measure alloying effects on the critical resolved shear stress (CRSS) of individual deformation modes in Mg alloys. The methodology is tested in Mg-Zn alloys by assessing the alloying effects, up to Zn contents of 2 at.%, on basal slip, extension twining and pyramidal slip in two metallurgical conditions: as-quenched, for which the Zn solute atoms remain homogenously dispersed in solid solution; and peak-aged, for which the Zn atoms form rod-shape beta(1)' (MgZn2) pre-cipitates. A combined approach including micromechanical testing, transmission Kikuchi diffraction, and high-resolution transmission electron microscopy was performed to reveal the corresponding deformation mechanisms. It was found that the CRSS enhancement for basal slip and extension twinning by MgZn2 precipitates is considerably larger than the effect of Zn in solid solution, while the strengthening of pyra-midal slip is similar in both cases. As a result, the anisotropy ratios remain high and similar to pure Mg in the solid solution strengthened Mg-Zn alloys. However, they are substantially reduced in precipitation strengthened Mg-Zn alloys. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Mg alloys Diffusion couples Solid solution Precipitation strengthening Basal slip Extension twinning |
| DOI | 10.1016/j.actamat.2021.117374 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000715005500004 |
| WOS Keyword | RESOLVED SHEAR-STRESS ; ELECTRON-MICROSCOPY ; PRISMATIC-SLIP ; NUCLEATION ; MECHANISMS ; GROWTH ; AL ; DISLOCATIONS ; TEMPERATURE ; ORIENTATION |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | Madrid Region[S2018/NMT-4381] ; MAT4.0 project (Spain) ; Spanish Ministry of Science and Innovation[PID2019-109962RB-I00] ; China Scholarship Council[201506020081] ; China Scholarship Council[201406290011] |
| Funding Organization | Madrid Region ; MAT4.0 project (Spain) ; Spanish Ministry of Science and Innovation ; China Scholarship Council |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Yang, L. ; Molina-Aldareguia, J. M. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87958 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.IMDEA Mat Inst, C Eric Kandel 2, Madrid 28906, Spain; 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 3.Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China; 4.China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang 621000, Sichuan, Peoples R China |
| Recommended Citation GB/T 7714 | Li N,Wang C,Monclus MA,et al. Solid solution and precipitation strengthening effects in basal slip, extension twinning and pyramidal slip in Mg-Zn alloys[J]. ACTA MATERIALIA,2021,221:11.Rp_Au:Yang, L., Molina-Aldareguia, J. M. |
| APA | Li N,Wang C,Monclus MA,Yang L,&Molina-Aldareguia JM.(2021).Solid solution and precipitation strengthening effects in basal slip, extension twinning and pyramidal slip in Mg-Zn alloys.ACTA MATERIALIA,221,11. |
| MLA | Li N,et al."Solid solution and precipitation strengthening effects in basal slip, extension twinning and pyramidal slip in Mg-Zn alloys".ACTA MATERIALIA 221(2021):11. |
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