The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy

AZ31 hot-rolled plates with gradient nano-grained surface were produced by surface mechanical attrition treatment (SMAT). The grain size was refined to nanoscale at the surface layer via twinning and dynamic recrystallization (DRX). The micro-hardness at the top layer had a 132% improvement and the...

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Main Authors: Peng, Jinhua, Zhang, Zhen, Guo, Peng, Liu, Zhao, Li, Yaozu, Zhou, Wei, Wu, Yucheng
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/144441
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1444412023-03-04T17:11:29Z The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy Peng, Jinhua Zhang, Zhen Guo, Peng Liu, Zhao Li, Yaozu Zhou, Wei Wu, Yucheng School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Surface Mechanical Attrition Treatment Macro-texture AZ31 hot-rolled plates with gradient nano-grained surface were produced by surface mechanical attrition treatment (SMAT). The grain size was refined to nanoscale at the surface layer via twinning and dynamic recrystallization (DRX). The micro-hardness at the top layer had a 132% improvement and the strengthening trend could be divided into three stages. The (0002) basal texture of the base material was weakened during SMAT, indicated by the inclination of (0002) poles, the decrease of maximum pole density and the divergence of contour lines. The inclined impacting direction of steel balls, the spherical shape of the balls and the activation of non-basal slip at the top surface were responsible for the variation. The yield strength was enhanced after SMAT and the increment during tensile test was higher than that during compression due to the different deformation mechanism. Texture weakening had little effect on mechanical properties due to the nano-grains and strong strain hardening at the top surface layer. Accepted version The authors thank the support by National Natural Science Foundation of China (No. 51871084 and No. 51401072). 2020-11-05T06:48:37Z 2020-11-05T06:48:37Z 2018 Journal Article Peng, J., Zhang, Guo, P., Liu, Z., Li, Y., Zhou, W., & Wu, Y. (2019). The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy. Materials Characterization, 148, 26-34. doi:10.1016/j.matchar.2018.11.031 1044-5803 https://hdl.handle.net/10356/144441 10.1016/j.matchar.2018.11.031 148 26 34 en Materials Characterization © 2018 Elsevier Inc. All rights reserved. This paper was published in Materials Characterization and is made available with permission of Elsevier Inc. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
Surface Mechanical Attrition Treatment
Macro-texture
spellingShingle Engineering::Mechanical engineering
Surface Mechanical Attrition Treatment
Macro-texture
Peng, Jinhua
Zhang, Zhen
Guo, Peng
Liu, Zhao
Li, Yaozu
Zhou, Wei
Wu, Yucheng
The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy
description AZ31 hot-rolled plates with gradient nano-grained surface were produced by surface mechanical attrition treatment (SMAT). The grain size was refined to nanoscale at the surface layer via twinning and dynamic recrystallization (DRX). The micro-hardness at the top layer had a 132% improvement and the strengthening trend could be divided into three stages. The (0002) basal texture of the base material was weakened during SMAT, indicated by the inclination of (0002) poles, the decrease of maximum pole density and the divergence of contour lines. The inclined impacting direction of steel balls, the spherical shape of the balls and the activation of non-basal slip at the top surface were responsible for the variation. The yield strength was enhanced after SMAT and the increment during tensile test was higher than that during compression due to the different deformation mechanism. Texture weakening had little effect on mechanical properties due to the nano-grains and strong strain hardening at the top surface layer.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Peng, Jinhua
Zhang, Zhen
Guo, Peng
Liu, Zhao
Li, Yaozu
Zhou, Wei
Wu, Yucheng
format Article
author Peng, Jinhua
Zhang, Zhen
Guo, Peng
Liu, Zhao
Li, Yaozu
Zhou, Wei
Wu, Yucheng
author_sort Peng, Jinhua
title The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy
title_short The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy
title_full The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy
title_fullStr The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy
title_full_unstemmed The effect of surface mechanical attrition treatment on texture evolution and mechanical properties of AZ31 magnesium alloy
title_sort effect of surface mechanical attrition treatment on texture evolution and mechanical properties of az31 magnesium alloy
publishDate 2020
url https://hdl.handle.net/10356/144441
_version_ 1759853951085182976