Micromechanics in Mg alloys: Role of hard Al2RE precipitates

Hui Su; Junsheng Wang; Chengpeng Xue; Guangyuan Tian; Shuo Wang; Xinghai Yang; Quan Li; Yisheng Miao; Zhihao Yang; Yanan Meng

doi:10.1016/j.jmst.2024.02.041

Micromechanics in Mg alloys: Role of hard Al₂RE precipitates

Hui Su
, Junsheng Wang^*
, Chengpeng Xue
, Guangyuan Tian
, Shuo Wang
, Xinghai Yang
, Quan Li
, Yisheng Miao
, Zhihao Yang
, Yanan Meng

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The influence of hard Al₂RE phases (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) on the overall and local deformation as well as damage mechanism of Mg alloys has been studied by using a crystal plasticity model based on dislocation density with a brittle damage criterion. Microcracks that lead to swift damage initiation and propagation throughout the matrix have been predicted. It has been found that the hard Al₂RE with higher elastic modulus enhances the damage resistance of the Mg matrix, which was confirmed by fracture SEM/EDS characterizations and phase-field damage simulation. This discovery provides valuable insights for designing Mg alloys with both high stiffness and enhanced damage resistance.

Original language	English
Pages (from-to)	112-128
Number of pages	17
Journal	Journal of Materials Science and Technology
Volume	200
DOIs	https://doi.org/10.1016/j.jmst.2024.02.041
Publication status	Published - 20 Nov 2024

Keywords

AlRE phase
CPFEM
Damage and fracture
Deformation behavior
Dislocation density

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10.1016/j.jmst.2024.02.041

Cite this

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title = "Micromechanics in Mg alloys: Role of hard Al2RE precipitates",

abstract = "The influence of hard Al2RE phases (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) on the overall and local deformation as well as damage mechanism of Mg alloys has been studied by using a crystal plasticity model based on dislocation density with a brittle damage criterion. Microcracks that lead to swift damage initiation and propagation throughout the matrix have been predicted. It has been found that the hard Al2RE with higher elastic modulus enhances the damage resistance of the Mg matrix, which was confirmed by fracture SEM/EDS characterizations and phase-field damage simulation. This discovery provides valuable insights for designing Mg alloys with both high stiffness and enhanced damage resistance.",

keywords = "AlRE phase, CPFEM, Damage and fracture, Deformation behavior, Dislocation density",

author = "Hui Su and Junsheng Wang and Chengpeng Xue and Guangyuan Tian and Shuo Wang and Xinghai Yang and Quan Li and Yisheng Miao and Zhihao Yang and Yanan Meng",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

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day = "20",

doi = "10.1016/j.jmst.2024.02.041",

language = "English",

volume = "200",

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journal = "Journal of Materials Science and Technology",

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TY - JOUR

T1 - Micromechanics in Mg alloys

T2 - Role of hard Al2RE precipitates

AU - Su, Hui

AU - Wang, Junsheng

AU - Xue, Chengpeng

AU - Tian, Guangyuan

AU - Wang, Shuo

AU - Yang, Xinghai

AU - Li, Quan

AU - Miao, Yisheng

AU - Yang, Zhihao

AU - Meng, Yanan

PY - 2024/11/20

Y1 - 2024/11/20

N2 - The influence of hard Al2RE phases (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) on the overall and local deformation as well as damage mechanism of Mg alloys has been studied by using a crystal plasticity model based on dislocation density with a brittle damage criterion. Microcracks that lead to swift damage initiation and propagation throughout the matrix have been predicted. It has been found that the hard Al2RE with higher elastic modulus enhances the damage resistance of the Mg matrix, which was confirmed by fracture SEM/EDS characterizations and phase-field damage simulation. This discovery provides valuable insights for designing Mg alloys with both high stiffness and enhanced damage resistance.

AB - The influence of hard Al2RE phases (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) on the overall and local deformation as well as damage mechanism of Mg alloys has been studied by using a crystal plasticity model based on dislocation density with a brittle damage criterion. Microcracks that lead to swift damage initiation and propagation throughout the matrix have been predicted. It has been found that the hard Al2RE with higher elastic modulus enhances the damage resistance of the Mg matrix, which was confirmed by fracture SEM/EDS characterizations and phase-field damage simulation. This discovery provides valuable insights for designing Mg alloys with both high stiffness and enhanced damage resistance.

KW - AlRE phase

KW - CPFEM

KW - Damage and fracture

KW - Deformation behavior

KW - Dislocation density

UR - https://www.scopus.com/pages/publications/85192375227

U2 - 10.1016/j.jmst.2024.02.041

DO - 10.1016/j.jmst.2024.02.041

M3 - Article

AN - SCOPUS:85192375227

SN - 1005-0302

VL - 200

SP - 112

EP - 128

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

Micromechanics in Mg alloys: Role of hard Al₂RE precipitates

Abstract

Keywords

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