Effect of grain boundary on acoustic emission during plastic deformation of copper-aluminum bicrystals

被引：12
|
作者：
Vinogradov, A
Hashimoto, S
Miura, S
机构：
[1] Dept. of Eng. Physics and Mechanics, Faculty of Engineering, Kyoto University
[2] Physics Department, Togliatti Polytechnic Institute
来源：
ACTA MATERIALIA | 1996年 / 44卷 / 07期
关键词：
D O I：
10.1016/1359-6454(95)00375-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The refined effect of grain boundary (GB) on acoustic emission (AE) is examined during tensile deformation of [110] oriented Cu-Al bicrystals having the Sigma 9(221) tilt boundary and of single crystals with the same orientation. Some features of AE related to the presence of GB have been found by the detailed AE spectral analysis. AE results are interpreted from the peculiarities of dislocation structure and its behavior near the GB. A kinetic model of pileup movement after crossing the GB satisfactorily explains the appearance of specific AE pulses at the end of Stage II and during Stage III in bicrystals. Copyright (C) 1996 Acta Metallurgica Inc.
引用
收藏
页码：2883 / 2890
页数：8
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