Solute atom segregation to I1 stacking fault and its bounding partial dislocations in a Mg-Bi alloy

被引：3

作者：

He, Cong ^{[1
,2
]}

Zhang, Yong ^{[3
]}

Li, Zhiqiao ^{[1
]}

Chen, Houwen ^{[1
,4
]}

Nie, Jian-Feng ^{[3
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys, Minist Educ, Chongqing 400044, Peoples R China

[2] Natl Inst Mat Sci, Res Ctr Magnet & Spintron Mat, Tsukuba 3050047, Japan

[3] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[4] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Peoples R China

来源：

JOURNAL OF MAGNESIUM AND ALLOYS | 2024年 / 12卷 / 08期

基金：

中国国家自然科学基金; 澳大利亚研究理事会;

关键词：

Mg alloys; Suzuki segregation; Stacking fault; Frank partial dislocation; SUZUKI SEGREGATION; PERIODIC SEGREGATION; MAGNESIUM ALLOYS; TWIN-BOUNDARY; AB-INITIO; Y ALLOY; 1ST-PRINCIPLES; ENERGIES; PHASE; DISSOCIATION;

D O I：

10.1016/j.jma.2022.11.021

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Stacking faults (SFs) and the interaction between solute atoms and SFs in a Mg-Bi alloy are investigated using aberration-corrected scanning transmission electron microscopy. It is found that abundant I-1 SFs are generated after cold rolling and are mainly distributed inside {10(sic)12} twins. After aging treatment, the formation of single-layer and three-layer Bi atom segregation in the vicinity of I-1 fault are clearly observed. Bi segregation also occurs at the 1/6<2(sic)203> bounding Frank partial dislocation cores. The segregation behaviors in I-1 fault and Frank dislocations are discussed and rationalized using first-principles calculations. (c) 2023 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer review under responsibility of Chongqing University

引用

页码：3135 / 3141

页数：7

共 4 条

[1] Unexpected partial dislocations within stacking faults in a cold deformed Mg-Bi alloy
He, C.
Zhang, Y.
Liu, C. Q.
Yue, Y.
Chen, H. W.
Nie, J. F.
ACTA MATERIALIA, 2020, 188 : 328 - 343
[2] Formation of I1 stacking fault by deformation defect evolution from grain boundaries in Mg
Yong-Jie Hu
Vaidehi Menon
Liang Qi
Journal of Magnesium and Alloys, 2022, 10 (10) : 2717 - 2729
[3] Effect of Small Addition of Tin, Silicon and Iron on the Solute Atom Diffusion in the Al 3 wt% Cu 1 wt% Mg Alloy and Its Photoelectrochemical Protection
Z. Chaieb
O. Ould Mohamed
A. A. Raho
F. Saib
M. Trari
International Journal of Metalcasting, 2019, 13 : 158 - 165
[4] Effect of Small Addition of Tin, Silicon and Iron on the Solute Atom Diffusion in the Al 3wt% Cu 1wt% Mg Alloy and Its Photoelectrochemical Protection
Chaieb, Z.
Mohamed, O. Ould
Raho, A. A.
Saib, F.
Trari, M.
INTERNATIONAL JOURNAL OF METALCASTING, 2019, 13 (01) : 158 - 165

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