Experimental investigation on the influence of Mg content on Portevin-Le Chatelier effect in Al-based alloys by using digital image correlation

Yang Su-Li; Fu Shi-Hua; Cai Yu-Long; Zhang Di; Zhang Qing-Chuan

doi:10.7498/aps.66.086201

Abstract

The Protein-Le Chatelier (PLC) effects are investigated by using digital image correlation at a constant applied strain rate of 5.0010-3 s-1 and room temperature in Al-Mg alloys with Mg content values (wt.%) of 2.30, 4.57, 6.10 and 6.91 respectively in this study. Both the yield strength and the ultimate strength increase with increasing Mg content, which is generally called solution strengthening. Type of PLC band changes from A to B with increasing Mg content. In low Mg content (2.30%) alloy, the serration amplitude almost remains 1 MPa, while in each of high Mg content (4.57%, 6.10%, 6.91%) alloys it linearly increases with the strain increasing. The serration amplitude is found to increase with increasing Mg content and gradually reaches a saturated state. With the increase of Mg content, the period of PLC band for continuous propagation gradually reduces and the time when the PLC band location sudden jumps increases in the process of propagation. When the strain is small, the out-of-band deformation of alloy is inhomogeneous obviously. And the deformation inhomogeneity slightly decreases with increasing Mg content. DIC results indicate that the PLC bandwidth does not change with Mg content, while the maximum strain increment in the PLC band increases with increasing both Mg content and strain. Additionally, special periodic damped serrations are observed in the stress-time curve of the low Mg content (2.30%), the corresponding PLC band shows that the periodic changed serrations in the stress-time curve correspond to the transformation of the PLC band orientation. Besides, the PLC band propagates upward continuously both before and after the shift.

Keywords:

Authors and contacts

1.
CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China;
2.
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

Corresponding author: Fu Shi-Hua, fushihua@ustc.edu.cn;zhangqc@ustc.edu.cn ; Zhang Qing-Chuan, fushihua@ustc.edu.cn;zhangqc@ustc.edu.cn

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 11332010, 11627803, 11472266, 11428206, 51571013) and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. DB22040502).

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[32]	Pan B 2011 Exp. Mech. 51 1223
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Cited By

[1]	Klose F B, Hagemann F, Hhner P, Neuhuser H 2004 Mater. Sci. Eng. A 387389 93
[2]	Jiang H F, Zhang Q C, Chen X D, Chen Z J, Jiang Z Y, Wu X P, Fan J H 2007 Acta Mater. 55 2219
[3]	Zhang Q C, Jiang Z Y, Jiang H F, Chen Z J, Wu X P 2005 Int. J. Plasticity 21 2150
[4]	Min J Y, Lin J P, Sun B 2014 Mech Mater. 68 164
[5]	Min J Y, Hector Jr L G, Zhang L, Sun L, Carsley J E, Lin J P 2016 Mater. Design 95 370
[6]	Cai Y L, Tian C G, Zhang G L, Han G M, Yang S L, Fu S H, Cui C Y, Zhang Q C 2017 J. Alloys Compd. 690 707
[7]	Wang X G, Han G M, Cui C Y, Guan S, Jin T, Sun X F, Hu Z Q 2016 Metall Mater. Trans. A 47 5994
[8]	Tong W, Tao H, Zhang N, Hector Jr L G 2005 Scr. Mater. 53 87
[9]	Jiang Z Y, Zhang Q C, Jiang H F, Chen Z J, Wu X P 2005 Mater. Sci. Eng. A 403 154
[10]	Ranc N, Wagner D 2008 Mater. Sci. Eng. A 474 188
[11]	Pink E, Grinberg A 1981 Mater. Sci. Eng. 51 1
[12]	Xiang G F, Zhang Q C, Liu H W, Wu X P, Ju X Y 2007 Scr. Mater. 56 721
[13]	Picu R C, Zhang D 2004 Acta Mater. 52 161
[14]	Tabata T, Fujtta H, Nakajima Y 1980 Acta Metall. 28 795
[15]	Penning P 1972 Acta Metall. 20 1169
[16]	Cottrell A H 1953 The London, Edinburgh, and Dublin Philos. Mag. J. Sci. 44 829
[17]	Xiong S M, Zhang Q C, Cao P T, Xiao R 2009 Acta Metall. Sin. 45 892 (in Chinese) [熊少敏, 张青川, 曹鹏涛, 肖锐 2009 金属学报 45 892]
[18]	Hu Q, Zhang Q C, Fu S H, Cao P T, Gong M 2011 Theor. Appl. Mech. Lett. 1 011007
[19]	Kang J, Wilkinson D S, Jain M, Embury J D, Beaudoin A J, Kim S, Mishira R, Sachdev A K 2006 Acta Mater. 54 209
[20]	Cao P T Zhang Q C, Xiao R, Xiong S M 2009 Acta Phys. Sin. 58 5591 (in Chinese) [曹鹏涛, 张青川, 肖锐, 熊少敏 2009 58 5591]
[21]	Bernard C, Cor J, Laurent H, Chauvelon P, Manach P Y 2013 Exp. Mech. 53 1025
[22]	Fu S H, Cai Y L, Yang S L, Zhang Q C, Wu X P 2016 Chin. Phys. Lett. 33 026201
[23]	Fu S H, Cheng T, Zhang Q C, Hu Q, Cao P T 2012 Acta Mater. 60 6650
[24]	Zhemchuzhnikova D A, Lebyodkin M A, Lebedkina T A, Kaibyshev R O 2015 Mater. Sci. Eng. A 639 37
[25]	Cai Y L, Fu S H, Wang Y H, Tian C G, Gao Y, Cheng T, Zhang Q C 2014 Acta Metall. Sin. 50 1491
[26]	Ma P C, Zhang D, Zhuang L Z, Zhang J S 2015 Int. J. Min. Met. Mater. 22 175
[27]	Ait-Amokhtar H, Fressengeas C, Bouabdallah K 2015 Mater. Sci. Eng. A 631 209
[28]	Ait-Amokhtar H, Fressengeas C, Boudrahem S 2008 Mater. Sci. Eng. A 488 540
[29]	Kang J D, Mishra R K, Wilkinson D S, Hopperstad O S 2012 Philos. Mag. Lett. 92 647
[30]	Cai Y L, Yang S L, Wang Y H, Fu S H, Zhang Q C 2016 Mater. Sci. Eng. A 664 155
[31]	McCormick P G, Ling C P 1995 Acta Metall. Mater. 43 1969
[32]	Pan B 2011 Exp. Mech. 51 1223
[33]	Kubin L P, Estrin Y 1990 Acta Metall. Mater. 38 697

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