Grain boundary evolution of highly nanotwinned alloys: Effect of initial twinned microstructure

被引：10

作者：

Bahena, Joel A. ^{[1
]}

Juarez, Theresa ^{[1
]}

Velasco, Leonardo ^{[2
]}

Hodge, Andrea M. ^{[1
,3
]}

机构：

[1] Univ Southern Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[2] Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany

[3] Univ Southern Calif, Dept Chem Engn & Mat Sci, 925 Bloom Walk,HED 216, Los Angeles, CA 90089 USA

来源：

SCRIPTA MATERIALIA | 2021年 / 190卷

基金：

美国国家科学基金会;

关键词：

Twinning; Microstructural evolution; Grain growth; Nanostructured materials; THERMAL-STABILITY; GROWTH TWINS; TENSILE BEHAVIOR; DRIVING FORCES; THIN-FILMS; RECRYSTALLIZATION; TEXTURE; MECHANISMS; METALS; ORIGIN;

D O I：

10.1016/j.scriptamat.2020.08.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of initial twinned microstructure on the grain growth behavior of four sputtered nanotwinned copper alloys were compared. As-deposited films were characterized by transmission electron microscopy and the microstructural evolution of the annealed samples was investigated through electron backscatter diffraction. Texture showed a pronounced effect, where films with strong {111} textures exhibited abnormal grain growth that was not observed in a randomly textured film. Additionally, the stability induced by twin boundaries appears to be limited, as the excess energy generated by a large twin density could drive the early onset of abnormal grain growth and recrystallization. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：27 / 31

页数：5

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