On dynamic deformation behavior of WE43 magnesium alloy sheet under shock loading conditions

被引：45
作者：
Asgari, H. [1 ]
Odeshi, A. G. [1 ]
Szpunar, J. A. [1 ]
机构：
[1] Univ Saskatchewan, Dept Mech Engn, Saskatoon, SK S7N 0W0, Canada
来源：
MATERIALS & DESIGN | 2014年 / 63卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Magnesium alloy sheet; Anisotropy; Twinning; Texture evolution; STRAIN-RATE SENSITIVITY; TEXTURE DEVELOPMENT; MICROSTRUCTURAL CHARACTERISTICS; MECHANICAL-BEHAVIOR; PLASTIC-DEFORMATION; EVOLUTION; MG; AZ31; SIMULATION; ANISOTROPY;
D O I：
10.1016/j.matdes.2014.06.038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, the texture evolution, microstructure and mechanical behavior of WE43 magnesium sheet at high strain rates are investigated. Samples cut along the rolling direction (RD), 45 degrees from the RD, transverse direction (TD) and perpendicular to the RD-TD plane were tested at strain rates of 800, 1200 and 1400 s (1) using Split Hopkinson Pressure Bar. It is observed that after shock loading, the initial weak texture converts to a weak (00.2) basal texture in all samples. Besides, it is found that the strength and ductility increase and twinning fraction decreases with increase in strain rate. Moreover, another effect of increase in strain rate is found to be the higher activation of pyramidal < c + a > slip systems. In addition, degree of stress and strain anisotropy is low particularly at higher strain rates, which is mainly related to the weak initial texture of the samples. A viscoplastic self-consistent model with a tangent approach is used to analyze the deformation mechanism during shock loading. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：552 / 564
页数：13
相关论文
共 27 条
  • [1] Dynamic Behavior of a Rare-Earth-Containing Mg Alloy, WE43B-T5, Plate with Comparison to Conventional Alloy, AM30-F
    Agnew, Sean
    Whittington, Wilburn
    Oppedal, Andrew
    El Kadiri, Haitham
    Shaeffer, Matthew
    Ramesh, K. T.
    Bhattacharyya, Jishnu
    Delorme, Rick
    Davis, Bruce
    [J]. JOM, 2014, 66 (02) : 277 - 290
  • [2] Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y
    Agnew, SR
    Yoo, MH
    Tomé, CN
    [J]. ACTA MATERIALIA, 2001, 49 (20) : 4277 - 4289
  • [3] Asgari H, 2013, P 24 CAN C APPL MECH, P68
  • [4] TENSILE-COMPRESSIVE YIELD ASYMMETRIES IN HIGH-STRENGTH WROUGHT MAGNESIUM ALLOYS
    BALL, EA
    PRANGNELL, PB
    [J]. SCRIPTA METALLURGICA ET MATERIALIA, 1994, 31 (02): : 111 - 116
  • [5] A Taylor model based description of the proof stress of magnesium AZ31 during hot working
    Barnett, MR
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2003, 34A (09): : 1799 - 1806
  • [6] The texture and anisotropy of magnesium-zinc-rare earth alloy sheets
    Bohlen, Jan
    Nuernberg, Marcus R.
    Senn, Jeremy W.
    Letzig, Dietmar
    Agnew, Sean R.
    [J]. ACTA MATERIALIA, 2007, 55 (06) : 2101 - 2112
  • [7] Texture and microstructure evolution in cold rolled AZ31 magnesium alloy
    Chang, L. L.
    Shang, E. F.
    Wang, Y. N.
    Zhao, X.
    Qi, M.
    [J]. MATERIALS CHARACTERIZATION, 2009, 60 (06) : 487 - 491
  • [8] Role of yttrium in the microstructure and texture evolution of Mg
    Farzadfar, S. A.
    Sanjari, M.
    Jung, I-H
    Essadiqi, E.
    Yue, S.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (22-23): : 6742 - 6753
  • [9] Deformation behaviour of commercially pure titanium at extreme strain rates
    Gurao, N. P.
    Kapoor, Rajeev
    Suwas, Satyam
    [J]. ACTA MATERIALIA, 2011, 59 (09) : 3431 - 3446
  • [10] Hamilton J, 2012, MAGNESIUM TECHNOLOGY, P433
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