The role of slip transmission on plastic strain accumulation across grain boundaries

被引：21

作者：

Abuzaid, Wael ^{[1
]}

Sangid, Michael D. ^{[1
]}

Sehitoglu, Huseyin ^{[1
]}

Carroll, Jay ^{[1
]}

Lambros, John ^{[1
]}

机构：

[1] Univ Illinois, Urbana, IL 61801 USA

来源：

IUTAM SYMPOSIUM ON FULL-FIELD MEASUREMENTS AND IDENTIFICATION IN SOLID MECHANICS, 2011 | 2012年 / 4卷

关键词：

Slip transmission; Grain boudaries; Residual Burgers vector; Microstructure; Dislocation; Slip; Plastic strain; Digital image correlation; Electron backscatter diffraction; Molecular dynamics;

D O I：

10.1016/j.piutam.2012.05.019

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In the present study, our aim is to develop a deeper understanding of strain accumulation in the vicinity of grain boundaries (GBs) within a polycrystalline aggregate. We focus on the role of slip transmission in the uniaxial plastic deformation of a nickel-based superalloy, Hastelloy-X. Utilizing high resolution ex-situ digital image correlation (DIC) and electron backscatter diffraction (EBSD), we establish the most likely dislocation reactions due to slip transmission and use this information to calculate the residual Burgers vector and plastic strain magnitudes across each interface. From our analysis, we quantitatively show an influence of the magnitude of the residual Burgers vector on plastic strains across GBs. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of H.D. Espinosa and F. Hild.

引用

页码：169 / 178

页数：10

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