Kinematics fields and spatial activity of Portevin-Le Chatelier bands using the digital image correlation method

被引：65

作者：

Ait-Amokhtar, H. ^{[1
]}

Vacher, P.

Boudrahem, S.

机构：

[1] Univ Bejaia, Dept Phys, Lab Technol Mat & Genie Procedes, Bejaia 06000, Algeria

[2] Univ Savoie, ESIA, Lab Mecan Appl, F-74016 Annecy, France

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 16期

关键词：

Portevin-Le Chatelier effect; image correlation; strain field; local strain;

D O I：

10.1016/j.actamat.2006.05.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Portevin-Le Chatelier (PLC) phenomenon is investigated by means of a two-dimensional measurement of displacement fields using the digital image correlation method. The strain fields obtained highlight in a quantitative way the nucleation and the displacement of PLC bands. The local strain, the width and the velocity of the PLC bands are measured. Effects of strain and strain rate are studied. The results show the close relationship between the organization of stress drops, the dynamics of the associated deformation bands and their parameters. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：4365 / 4371

页数：7

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