A microstructure-based model of the deformation mechanisms and flow stress during elevated-temperature straining of a magnesium alloy

被引：8
|
作者：
Cipoletti, David E. [1 ]
Bower, Allan F. [1 ]
Krajewski, Paul E. [2 ]
机构：
[1] Brown Univ, Sch Engn, Providence, RI 02912 USA
[2] Gen Motors Co, Warren, MI 48090 USA
来源：
SCRIPTA MATERIALIA | 2011年 / 64卷 / 10期
关键词：
Magnesium alloys; Finite element analysis; Creep; Grain boundary sliding; Grain boundary diffusion; FINITE-ELEMENT-METHOD; CONSTITUTIVE RESPONSE; THRESHOLD STRESS; AZ31; SLIP; POLYCRYSTALS; EVOLUTION; BEHAVIOR; AL;
D O I：
10.1016/j.scriptamat.2010.12.033
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We show that the variation of flow stress with strain rate and grain size in a magnesium alloy deformed at a constant strain rate and 450 degrees C can be predicted by a crystal plasticity model that includes grain boundary sliding and diffusion. The model predicts the grain size dependence of the critical strain rate that will cause a transition in deformation mechanism from dislocation creep to grain boundary sliding, and yields estimates for grain boundary fluidity and diffusivity. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：931 / 934
页数：4
相关论文
共 50 条
  • [41] Microstructure evolution of ZK40 magnesium alloy during high strain rate compression deformation at elevated temperatures
    Yan, H. -G.
    Wu, Y. -Z.
    Chen, J. -H.
    Zhu, S. -Q.
    Liu, Z. -W.
    Tian, J.
    MATERIALS SCIENCE AND TECHNOLOGY, 2011, 27 (09) : 1416 - 1421
  • [42] Microstructure and flow stress modelling during plastic deformation of an aluminum alloy type A6061
    Kreyca, J.
    Falahati, A.
    Kozeschnik, E.
    MATERIALS TODAY-PROCEEDINGS, 2015, 2 : S107 - S112
  • [43] Evolution of flow stress and microstructure in an Al-Zn-MgSeries alloy during hot deformation
    Shen, Jian
    ShangGuan, Yongheng
    Yan, Xiaodong
    2006 BIMW: 2006 BEIJING INTERNATIONAL MATERIALS WEEK, PTS 1-4: MAGNESIUM, 2007, 546-549 : 965 - +
  • [44] Flow behavior and microstructure evolution of a P/M TiAl alloy during high temperature deformation
    Wang, Gang
    Xu, Lei
    Tian, Yuxing
    Zheng, Zhuo
    Cui, Yuyou
    Yang, Rui
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (22-23): : 6754 - 6763
  • [45] A microstructure-based model for quantifying irreversible yield stress evolution in cement-based pastes during hydration
    Yin, Xiuliang
    Wu, Zhijun
    Weng, Lei
    Xu, Xiangyu
    Zhou, Yuan
    Liu, Quansheng
    CEMENT AND CONCRETE RESEARCH, 2024, 180
  • [46] Modelling flow stress evolution during elevated temperature deformation of two low carbon steels
    Anderson, JG
    Evans, RW
    IRONMAKING & STEELMAKING, 1996, 23 (02) : 130 - 135
  • [47] Flow stress equation of AZ31 magnesium alloy sheet during warm tensile deformation
    Cheng, Yong Qi
    Zhang, Hui
    Chen, Zhen Hua
    Xian, Kui Feng
    JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2008, 208 (1-3) : 29 - 34
  • [48] A microstructure-based model for describing strain softening during compression of Al-30%wt Zn alloy
    Borodachenkova, M.
    Gracio, J.
    Picu, R. C.
    Barlat, F.
    INTERNATIONAL JOURNAL OF MULTIPHYSICS, 2013, 7 (01) : 77 - 86
  • [49] Flow behavior and constitutive relationship for elevated temperature compressive deformation of a high Nb containing TiAl alloy with (α2 + γ) microstructure
    Chu, Yudong
    Li, Jinshan
    Zhao, Fengtong
    Tang, Bin
    Kou, Hongchao
    MATERIALS LETTERS, 2018, 210 : 58 - 61
  • [50] Quantification of uncertainties in grain size predictions of a microstructure-based flow stress model and application to gear wheel forging
    Henke, T.
    Bambach, M.
    Hirt, G.
    CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2013, 62 (01) : 287 - 290
12345