Kinematic Fields and Acoustic Emission Observations Associated with the Portevin Le Chatelier Effect on an Al-Mg Alloy

被引：29

作者：

Louche, H. ^{[1
]}

Bouabdallah, K. ^{[1
]}

Vacher, P. ^{[1
]}

Coudert, T. ^{[1
]}

Balland, P. ^{[1
]}

机构：

[1] Univ Savoie, SYMME, F-74944 Annecy Le Vieux, France

来源：

EXPERIMENTAL MECHANICS | 2008年 / 48卷 / 06期

关键词：

Portevin-Le-Chatelier effect; Strain field measurement; Acoustic emission; Strain localization; Aluminum magnesium alloy;

D O I：

10.1007/s11340-008-9125-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents experimental tensile test results obtained on flat aluminum magnesium alloy samples on a hard machine. The mechanical response, kinematic fields and acoustic emissions were simultaneously obtained in an experimental setup. Propagation instabilities associated with the Portevin-Le-Chatelier effect were observed as localized intense strain increment bands. Depending on the strain rate, A, B or C types were studied on the basis of stress drops, acoustic emission and strain fields. Then the band characteristics ( position, orientation, width, thickness reduction, intensity, acoustic emission, principal strain direction) were presented in various strain rate conditions.

引用

页码：741 / 751

页数：11

共 43 条

[1] Kinematics fields and spatial activity of Portevin-Le Chatelier bands using the digital image correlation method [J].