Slip transmission across plate-shaped Ω nano-precipitates in Al-Cu-Mg-Ag alloys

Wenqian Wu; Shenlan Yang; Jian Feng Nie; Amit Misra; Jian Wang

doi:10.1016/j.scriptamat.2025.116539

Slip transmission across plate-shaped Ω nano-precipitates in Al-Cu-Mg-Ag alloys

Wenqian Wu
, Shenlan Yang
, Jian Feng Nie
, Amit Misra
, Jian Wang

Materials Science & Engineering

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

8 Citations (Scopus)

Abstract

Atomistic simulations, crystallographic analysis and experimental HAADF-STEM images were used to elucidate the dislocation mechanisms of shearing Ω phase (Al₂Cu) nano-plates in Al-Cu-Mg-Ag alloys. Slip transmission across the Ω phase was found to be associated with the ¼[1¯01](101)_Ω slip system because of a higher geometric compatibility factor and a lower residual dislocation magnitude associated with this slip system as compared to others. This study highlights the role of nano-plate size, shape and geometry on the impeding effect on dislocation motion and the plastic co-deformation capability associated with slip transmission.

Original language	English
Article number	116539
Number of pages	6
Journal	Scripta Materialia
Volume	259
DOIs	https://doi.org/10.1016/j.scriptamat.2025.116539
Publication status	Published - 1 Apr 2025

Keywords

Al-Cu-Mg-Ag alloy
AlCu nano-plates
Atomistic simulations
HAADF-STEM
Slip transmission

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10.1016/j.scriptamat.2025.116539

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title = "Slip transmission across plate-shaped Ω nano-precipitates in Al-Cu-Mg-Ag alloys",

abstract = "Atomistic simulations, crystallographic analysis and experimental HAADF-STEM images were used to elucidate the dislocation mechanisms of shearing Ω phase (Al2Cu) nano-plates in Al-Cu-Mg-Ag alloys. Slip transmission across the Ω phase was found to be associated with the ¼[1¯01](101)Ω slip system because of a higher geometric compatibility factor and a lower residual dislocation magnitude associated with this slip system as compared to others. This study highlights the role of nano-plate size, shape and geometry on the impeding effect on dislocation motion and the plastic co-deformation capability associated with slip transmission.",

keywords = "Al-Cu-Mg-Ag alloy, AlCu nano-plates, Atomistic simulations, HAADF-STEM, Slip transmission",

author = "Wenqian Wu and Shenlan Yang and Nie, \{Jian Feng\} and Amit Misra and Jian Wang",

note = "Publisher Copyright: {\textcopyright} 2025 Acta Materialia Inc.",

year = "2025",

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doi = "10.1016/j.scriptamat.2025.116539",

language = "English",

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journal = "Scripta Materialia",

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TY - JOUR

T1 - Slip transmission across plate-shaped Ω nano-precipitates in Al-Cu-Mg-Ag alloys

AU - Wu, Wenqian

AU - Yang, Shenlan

AU - Nie, Jian Feng

AU - Misra, Amit

AU - Wang, Jian

PY - 2025/4/1

Y1 - 2025/4/1

N2 - Atomistic simulations, crystallographic analysis and experimental HAADF-STEM images were used to elucidate the dislocation mechanisms of shearing Ω phase (Al2Cu) nano-plates in Al-Cu-Mg-Ag alloys. Slip transmission across the Ω phase was found to be associated with the ¼[1¯01](101)Ω slip system because of a higher geometric compatibility factor and a lower residual dislocation magnitude associated with this slip system as compared to others. This study highlights the role of nano-plate size, shape and geometry on the impeding effect on dislocation motion and the plastic co-deformation capability associated with slip transmission.

AB - Atomistic simulations, crystallographic analysis and experimental HAADF-STEM images were used to elucidate the dislocation mechanisms of shearing Ω phase (Al2Cu) nano-plates in Al-Cu-Mg-Ag alloys. Slip transmission across the Ω phase was found to be associated with the ¼[1¯01](101)Ω slip system because of a higher geometric compatibility factor and a lower residual dislocation magnitude associated with this slip system as compared to others. This study highlights the role of nano-plate size, shape and geometry on the impeding effect on dislocation motion and the plastic co-deformation capability associated with slip transmission.

KW - Al-Cu-Mg-Ag alloy

KW - AlCu nano-plates

KW - Atomistic simulations

KW - HAADF-STEM

KW - Slip transmission

UR - https://www.scopus.com/pages/publications/85214677790

U2 - 10.1016/j.scriptamat.2025.116539

DO - 10.1016/j.scriptamat.2025.116539

M3 - Article

AN - SCOPUS:85214677790

SN - 1359-6462

VL - 259

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 116539

ER -

Slip transmission across plate-shaped Ω nano-precipitates in Al-Cu-Mg-Ag alloys

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Monash Centre for Electron Microscopy (MCEM)

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Slip transmission across plate-shaped Ω nano-precipitates in Al-Cu-Mg-Ag alloys

Abstract

Keywords

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Monash Centre for Electron Microscopy (MCEM)

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