Effect of type-B Portevin-Le Chatelier bands on the onset of necking in uniaxial tension of strip cast AA5754 sheets

被引：49
|
作者：
Kang, JD
Wilkinson, DS
Embury, JD
Jain, M
Beaudoin, AJ
机构：
[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada
[2] McMaster Univ, Dept Mech Engn, Hamilton, ON L8S 4L7, Canada
[3] Univ Illinois, Dept Mech & Ind Engn, Urbana, IL 61801 USA
来源：
SCRIPTA MATERIALIA | 2005年 / 53卷 / 05期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Portevin-Le Chatelier effect; ductility; tension test; confocal microscopy; aluminum alloys;
D O I：
10.1016/j.scriptamat.2005.05.010
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present a new model for the effect of type-B Portevin-Le Chatelier (PLC) bands on the early onset of necking in uniaxial tension. The model is used to explain the effect of strain rate on necking strain in strip cast AA5754 sheets. The strong correlation between PLC band strain and PLC markings is delineated through the surface roughness measurements by confocal microscopy as well. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：499 / 503
页数：5
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