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A pathway to achieving strength–ductility simultaneous improvement via solute segregation in gradient-structured Mg–Zn–Gd alloy

delete2026-07-24
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OA
AI
Z
Zongyan Peng
C
Chunquan Liu *
X
Xiaoyu Chen *
W
Wenjun Ci
张伟 cover
张伟 (Wei Zhang)
D
Di Zhao *
X
Xinyu Wang
H
Huaqiang Xiao
DOI:10.1080/21663831.2026.2703845delete
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Abstract

Abstract

En 中文
This study reports a novel dual gradient-structured (GS) Mg–2Zn–0.8Gd (wt.%) alloy fabricated via surface sliding friction and followed by heat treatment. Excellent grain boundary (GB) stability is achieved through the co-segregation of Zn and Gd atoms. The segregated gradient structure produces an excellent strengthening and work hardening effect, which is attributed to the combined effects of prominent GB segregation within the GS layer and the recovery of dislocation storage capacity. Furthermore, a remarkable segregation hardening in the surface layer increases the hard–soft disparity, which arouses more geometrically necessary dislocations that further synergistically strengthen and toughen the alloy.
Keywords:
Gradient structure
segregation
strength
ductility

Journal

Materials Research Letters cover
Materials Research Letters
IF:
7.9
Papers:
1.1K
Citations:
6.4K

Organization

N
Northwest Institute for Nonferrous Metal Research
Scholars:
96
Papers: 31
Citations: 0
S
suzhou university of science and technology
Scholars:
1.8K
Papers: 766
Citations: 0
G
guizhou university
Scholars:
2.3W
Papers: 1.3W
Citations: 15
C
chongqing university
Scholars:
1.0W
Papers: 3.9K
Citations: 1
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