Twin-like fault in Mg–9.8 wt%Sn alloy

Chaoqiang Liu; Houwen Chen; Nick Wilson; Jian Feng Nie

doi:10.1016/j.scriptamat.2018.06.018

Twin-like fault in Mg–9.8 wt%Sn alloy

Chaoqiang Liu, Houwen Chen, Nick Wilson, Jian Feng Nie

Materials Science & Engineering

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

4 Citations (Scopus)

Abstract

Stacking faults in magnesium alloys have received considerable attention in recent years, but only intrinsic and extrinsic faults are studied at experimental and computational levels. Twin-like fault, designated as T₂ fault, has received little attention. In this study, we report for the first time the occurrence of T₂ fault in Mg–9.8 wt%Sn alloy. The T₂ fault and solute segregation in regions surrounding the fault were characterized using aberration-corrected scanning transmission electron microscopy and first-principles calculations. Sn atoms orderly distribute in the fault plane and its neighbouring planes, which drastically decreases the T₂ fault energy.

Original language	English
Pages (from-to)	89-93
Number of pages	5
Journal	Scripta Materialia
Volume	155
DOIs	https://doi.org/10.1016/j.scriptamat.2018.06.018
Publication status	Published - 1 Oct 2018

Keywords

DFT
HAADF-STEM
Magnesium alloys
Segregation
Stacking fault

Cite this

Liu, C., Chen, H., Wilson, N., & Nie, J. F. (2018). Twin-like fault in Mg–9.8 wt%Sn alloy. Scripta Materialia, 155, 89-93. https://doi.org/10.1016/j.scriptamat.2018.06.018

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abstract = "Stacking faults in magnesium alloys have received considerable attention in recent years, but only intrinsic and extrinsic faults are studied at experimental and computational levels. Twin-like fault, designated as T2 fault, has received little attention. In this study, we report for the first time the occurrence of T2 fault in Mg–9.8 wt{\%}Sn alloy. The T2 fault and solute segregation in regions surrounding the fault were characterized using aberration-corrected scanning transmission electron microscopy and first-principles calculations. Sn atoms orderly distribute in the fault plane and its neighbouring planes, which drastically decreases the T2 fault energy.",

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author = "Chaoqiang Liu and Houwen Chen and Nick Wilson and Nie, {Jian Feng}",

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AU - Liu, Chaoqiang

AU - Chen, Houwen

AU - Wilson, Nick

AU - Nie, Jian Feng

PY - 2018/10/1

Y1 - 2018/10/1

N2 - Stacking faults in magnesium alloys have received considerable attention in recent years, but only intrinsic and extrinsic faults are studied at experimental and computational levels. Twin-like fault, designated as T2 fault, has received little attention. In this study, we report for the first time the occurrence of T2 fault in Mg–9.8 wt%Sn alloy. The T2 fault and solute segregation in regions surrounding the fault were characterized using aberration-corrected scanning transmission electron microscopy and first-principles calculations. Sn atoms orderly distribute in the fault plane and its neighbouring planes, which drastically decreases the T2 fault energy.

AB - Stacking faults in magnesium alloys have received considerable attention in recent years, but only intrinsic and extrinsic faults are studied at experimental and computational levels. Twin-like fault, designated as T2 fault, has received little attention. In this study, we report for the first time the occurrence of T2 fault in Mg–9.8 wt%Sn alloy. The T2 fault and solute segregation in regions surrounding the fault were characterized using aberration-corrected scanning transmission electron microscopy and first-principles calculations. Sn atoms orderly distribute in the fault plane and its neighbouring planes, which drastically decreases the T2 fault energy.

KW - DFT

KW - HAADF-STEM

KW - Magnesium alloys

KW - Segregation

KW - Stacking fault

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EP - 93

JO - Scripta Materialia

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10.1016/j.scriptamat.2018.06.018

Link to publication in Scopus

Twin-like fault in Mg–9.8 wt%Sn alloy

Abstract

Keywords

Cite this

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Twin-like fault in Mg–9.8 wt%Sn alloy