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

被引：51
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
相关论文
共 17 条
[1]  
Baird J.D., 1973, INHOMOGENEITY PLASTI, P191
[2]   Multifractal burst in the spatiotemporal dynamics of jerky flow [J].
Bharathi, MS ;
Lebyodkin, M ;
Ananthakrishna, G ;
Fressengeas, C ;
Kubin, LP .
PHYSICAL REVIEW LETTERS, 2001, 87 (16) :1-165508
[3]   SERRATED YIELDING IN ALUMINIUM-3( MAGNESIUM [J].
BRINDLEY, BJ ;
WORTHINGTON, PJ .
ACTA METALLURGICA, 1969, 17 (11) :1357-+
[4]   Analysis on the amplitude of serrated flow associated with the Portevin-LeChatelier effect of substitutional fcc alloys [J].
Chen, MC ;
Chen, LH ;
Lui, TS .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (06) :1691-1694
[5]   DYNAMIC STRAIN-AGING AND CRACK-PROPAGATION IN THE 2091 AL-LI ALLOY [J].
DELAFOSSE, D ;
LAPASSET, G ;
KUBIN, LP .
SCRIPTA METALLURGICA ET MATERIALIA, 1993, 29 (11) :1379-1384
[6]   REPORTED ANOMALIES IN RELATING STRAIN-RATE SENSITIVITY (M) TO DUCTILITY [J].
GHOSH, AK ;
AYRES, RA .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1976, 7 (10) :1589-1591
[7]   THEORY OF TENSILE TEST [J].
HART, EW .
ACTA METALLURGICA, 1967, 15 (02) :351-&
[8]   Hardening laws, surface roughness and biaxial tensile limit strains of sheet aluminium alloys [J].
Jain, M ;
Lloyd, DJ ;
Macewen, SR .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 1996, 38 (02) :219-232
[9]  
KANG J, 2004, AIST TMS P MAT SCI T, V2, P249
[10]   SERRATED YIELDING AND THE LOCALIZED SHEAR FAILURE MODE IN ALUMINUM-ALLOYS [J].
KING, JE ;
YOU, CP ;
KNOTT, JF .
ACTA METALLURGICA, 1981, 29 (09) :1553-1566
12