Investigation of Portevin-Le Chatelier Band Strain and Elastic Shrinkage in Al-Based Alloys Associated with Mg Contents

被引：58
作者：
Cai, Yulong [1 ]
Yang, Suli [1 ]
Fu, Shihua [1 ]
Zhang, Di [2 ]
Zhang, Qingchuan [1 ]
机构：
[1] Univ Sci & Technol China, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China
[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2017年 / 33卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Mg content; Al-Mg alloy; Portevin-Le Chatelier effect; Digital image correlation; Elastic shrinkage; DEFORMATION BANDS; PLASTIC INSTABILITIES; SINGLE-CRYSTALS; ALUMINUM-ALLOYS; JERKY FLOW; PARAMETERS; LOCALIZATION; PROPAGATION; SUPERALLOY; CROSSOVER;
D O I：
10.1016/j.jmst.2016.05.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Portevin-Le Chatelier (PLC) effect in Al-2.30wt% Mg, Al-4.57wt% Mg and Al-6.91wt% Mg alloys has been investigated at various applied strain rates at room temperature in this study. Three-dimensional digital image correlation (3D-DIC) technique was applied to obtaining the further insight into the spa-tiotemporal characteristics, in particular the influence of Mg content on deformation behaviors. Mg content has a pronounced effect on serration characteristics, including the serration type and amplitude; Mg content tends to weaken the spatial correlation of the propagative bands. Additionally, the serration amplitude linearly increases with the maximum PLC band strain; high Mg content generates a higher PLC band strain at a given serration amplitude compared with low Mg content. Mg content is found to be effective to enhance the serration amplitude, the maximum PLC band strain and also the amount of elastic shrinkage outside PLC bands. (C) 2016 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：580 / 586
页数：7
相关论文
共 40 条
[1]   The dynamics of Portevin-Le Chatelier bands in an Al-Mg alloy from infrared thermography [J].
Ait-Amokhtar, H. ;
Fressengeas, C. ;
Boudrahem, S. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 488 (1-2) :540-546
[2]   Spatiotemporal aspects of jerky flow in Al-Mg alloys, in relation with the Mg content [J].
Ait-Amokhtar, H ;
Boudrahem, S ;
Fressengeas, C .
SCRIPTA MATERIALIA, 2006, 54 (12) :2113-2118
[3]   On the effects of the Mg content on the critical strain for the jerky flow of Al-Mg alloys [J].
Ait-Amokhtar, H. ;
Fressengeas, C. ;
Bouabdallah, K. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2015, 631 :209-213
[4]   Crossover from continuous to discontinuous propagation in the Portevin-Le Chatelier effect [J].
Ait-Amokhtar, H. ;
Fressengeas, C. .
ACTA MATERIALIA, 2010, 58 (04) :1342-1349
[5]   Crossover from chaotic to self-organized critical dynamics in jerky flow of single crystals [J].
Ananthakrishna, G ;
Noronha, SJ ;
Fressengeas, C ;
Kubin, LP .
PHYSICAL REVIEW E, 1999, 60 (05) :5455-5462
[6]   An experimental and numerical investigation of the behaviour of AA5083 aluminium alloy in presence of the Portevin-Le Chatelier effect [J].
Benallal, A. ;
Berstad, T. ;
Borvik, T. ;
Hopperstad, O. S. ;
Koutiri, I. ;
de Codes, R. Nogueira .
INTERNATIONAL JOURNAL OF PLASTICITY, 2008, 24 (10) :1916-1945
[7]   Effects of strain rate on the characteristics of PLC deformation bands for AA5083-H116 aluminium alloy [J].
Benallal, A. ;
Berstad, T. ;
Borvik, T. ;
Hopperstad, O. S. ;
de Codes, R. Nogueira .
PHILOSOPHICAL MAGAZINE, 2008, 88 (28-29) :3311-3338
[8]   The kinetics of the Portevin-Le Chatelier bands in an Al-5at%Mg alloy [J].
CHIHAB, K ;
ESTRIN, Y ;
KUBIN, LP ;
VERGNOL, J .
SCRIPTA METALLURGICA, 1987, 21 (02) :203-208
[9]  
COTTRELL AH, 1953, PHILOS MAG, V44, P829
[10]   Dynamic strain aging in a new Ni-Co base superalloy [J].
Cui, C. Y. ;
Gu, Y. F. ;
Yuan, Y. ;
Harada, H. .
SCRIPTA MATERIALIA, 2011, 64 (06) :502-505
1234