Microstructure evolution in abrasion-induced surface layer on an Al-Zn-Mg-Cu alloy

Shan Shan Wang; Jian Tang Jiang; Guo Hua Fan; Li Yang; Sheng Long Dai; G. S. Frankel; Liang Zhen

doi:10.1016/j.matchar.2014.10.009

Microstructure evolution in abrasion-induced surface layer on an Al-Zn-Mg-Cu alloy

Shan Shan Wang
, Jian Tang Jiang
, Guo Hua Fan
, Li Yang
, Sheng Long Dai
, G. S. Frankel
, Liang Zhen^*

^*Corresponding author for this work

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

27 Scopus citations

Abstract

An altered surface layer forms on an Al-Zn-Mg-Cu alloy during surface preparation by abrasion with grinding paper. Strain-induced dissolution of η′/η precipitates and formation of nano-sized subgrains were observed in the surface layer with thickness of several hundred nanometers. The segregation of solute elements along dislocations and subgrain boundaries and the precipitation of Al₂Cu phase at the sub-boundaries and the free surface were related to enhanced diffusion accelerated by deformation-induced vacancies, dislocations and subgrain boundaries. The microstructure evolution in this layer is mainly attributed to the shear strain and is modified by temperature rise during surface abrasion. The unique surface microstructural changes produced by abrasion might alter the surface properties.

Original language	English
Pages (from-to)	18-25
Number of pages	8
Journal	Materials Characterization
Volume	98
DOIs	https://doi.org/10.1016/j.matchar.2014.10.009
State	Published - Dec 2014
Externally published	Yes

Keywords

Aluminum alloy
Surface nanostructures
Surface preparation
Transmission electron microscopy

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10.1016/j.matchar.2014.10.009

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title = "Microstructure evolution in abrasion-induced surface layer on an Al-Zn-Mg-Cu alloy",

abstract = "An altered surface layer forms on an Al-Zn-Mg-Cu alloy during surface preparation by abrasion with grinding paper. Strain-induced dissolution of η′/η precipitates and formation of nano-sized subgrains were observed in the surface layer with thickness of several hundred nanometers. The segregation of solute elements along dislocations and subgrain boundaries and the precipitation of Al2Cu phase at the sub-boundaries and the free surface were related to enhanced diffusion accelerated by deformation-induced vacancies, dislocations and subgrain boundaries. The microstructure evolution in this layer is mainly attributed to the shear strain and is modified by temperature rise during surface abrasion. The unique surface microstructural changes produced by abrasion might alter the surface properties.",

keywords = "Aluminum alloy, Surface nanostructures, Surface preparation, Transmission electron microscopy",

author = "Wang, \{Shan Shan\} and Jiang, \{Jian Tang\} and Fan, \{Guo Hua\} and Li Yang and Dai, \{Sheng Long\} and Frankel, \{G. S.\} and Liang Zhen",

year = "2014",

month = dec,

doi = "10.1016/j.matchar.2014.10.009",

language = "英语",

volume = "98",

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journal = "Materials Characterization",

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T1 - Microstructure evolution in abrasion-induced surface layer on an Al-Zn-Mg-Cu alloy

AU - Wang, Shan Shan

AU - Jiang, Jian Tang

AU - Fan, Guo Hua

AU - Yang, Li

AU - Dai, Sheng Long

AU - Frankel, G. S.

AU - Zhen, Liang

PY - 2014/12

Y1 - 2014/12

N2 - An altered surface layer forms on an Al-Zn-Mg-Cu alloy during surface preparation by abrasion with grinding paper. Strain-induced dissolution of η′/η precipitates and formation of nano-sized subgrains were observed in the surface layer with thickness of several hundred nanometers. The segregation of solute elements along dislocations and subgrain boundaries and the precipitation of Al2Cu phase at the sub-boundaries and the free surface were related to enhanced diffusion accelerated by deformation-induced vacancies, dislocations and subgrain boundaries. The microstructure evolution in this layer is mainly attributed to the shear strain and is modified by temperature rise during surface abrasion. The unique surface microstructural changes produced by abrasion might alter the surface properties.

AB - An altered surface layer forms on an Al-Zn-Mg-Cu alloy during surface preparation by abrasion with grinding paper. Strain-induced dissolution of η′/η precipitates and formation of nano-sized subgrains were observed in the surface layer with thickness of several hundred nanometers. The segregation of solute elements along dislocations and subgrain boundaries and the precipitation of Al2Cu phase at the sub-boundaries and the free surface were related to enhanced diffusion accelerated by deformation-induced vacancies, dislocations and subgrain boundaries. The microstructure evolution in this layer is mainly attributed to the shear strain and is modified by temperature rise during surface abrasion. The unique surface microstructural changes produced by abrasion might alter the surface properties.

KW - Aluminum alloy

KW - Surface nanostructures

KW - Surface preparation

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84908360879

U2 - 10.1016/j.matchar.2014.10.009

DO - 10.1016/j.matchar.2014.10.009

M3 - 文章

AN - SCOPUS:84908360879

SN - 1044-5803

VL - 98

SP - 18

EP - 25

JO - Materials Characterization

JF - Materials Characterization

ER -

Microstructure evolution in abrasion-induced surface layer on an Al-Zn-Mg-Cu alloy

Abstract

Keywords

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