Microstructure evolution and simulation study of a duplex Mg-Li alloy during Double Change Channel Angular Pressing

被引：29
作者：
Wei, Guobing [1 ]
Mahmoodkhani, Yahya [2 ]
Peng, Xiaodong [1 ]
Hadadzadeh, Amir [2 ]
Xu, Tiancai [1 ]
Liu, Junwei [1 ]
Xie, Weidong [1 ]
Wells, Mary A. [2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Univ Waterloo, Mech & Mechatron Engn Dept, Waterloo, ON N2L 3G1, Canada
来源：
MATERIALS & DESIGN | 2016年 / 90卷
关键词：
Mg-Li alloy; DRX; Microstructure evolution; Numerical simulation; Equal channel angular pressing; MECHANICAL-PROPERTIES; ALUMINUM-ALLOYS; ELEVATED-TEMPERATURES; DEFORMATION-BEHAVIOR; ICOSAHEDRAL PHASE; HOT EXTRUSION; ECAP; AL; COMPOSITE; FLOW;
D O I：
10.1016/j.matdes.2015.10.143
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dual-phase Mg-9Li-3Al-2Sr-2Y alloy was extruded at 553 K using Double Change Channel Angular Pressing (DCCAP) with an extrusion ratio of 17. The commercial code DEFORM-3D was used to develop a numerical model for deformation of the investigated material and the strain distribution, damage and grain shape evolution were predicted. The accurate computation of the material flow and deformation was performed, of which the results showed good agreement with microscope observations and micro-hardness measurements on the deformed billet and extrudate. Results suggest that dynamic recrystallization (DRX) occurs during the deformation and leads to grain refinement during the DCCAP process. The tensile strength and elongation after fracture in middle part of the extrudate show optimum values of 246.6 MPa and 19.9%, respectively. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：266 / 275
页数：10
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  • [11] The simulation of deformation distribution during ECAP using 3D finite element method
    Suo, Tao
    Li, Yulong
    Guo, Yazhou
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    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 432 (1-2): : 269 - 274
  • [12] Prediction and control of subgrain size in the hot extrusion of aluminium alloys with feeder plates
    Velay, Xavier
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2009, 209 (07) : 3610 - 3620
  • [13] Microstructures and mechanical properties of 5 wt.% Al2Yp/Mg-Li composite
    Wang, SJ
    Wu, GQ
    Li, RH
    Luo, G
    Huang, Z
    [J]. MATERIALS LETTERS, 2006, 60 (15) : 1863 - 1865
  • [14] Constitutive modeling of Mg-9Li-3Al-2Sr-2Y at elevated temperatures
    Wei, Guobing
    Peng, Xiaodong
    Hadadzadeh, Amir
    Mahmoodkhani, Yahya
    Xie, Weidong
    Yang, Yan
    Wells, Mary A.
    [J]. MECHANICS OF MATERIALS, 2015, 89 : 241 - 253
  • [15] Finite element analysis of deformation behavior in continuous ECAP process
    Wei, Wei
    Zhang, Wei
    Wei, Kun Xia
    Zhong, Yi
    Cheng, Gang
    Hu, Jing
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 516 (1-2): : 111 - 118
  • [16] Effect of icosahedral phase on the thermal stability and ageing response of a duplex structured Mg-Li alloy
    Xu, D. K.
    Wang, B. J.
    Li, C. Q.
    Zu, T. T.
    Han, E. H.
    [J]. MATERIALS & DESIGN, 2015, 69 : 124 - 129
  • [17] Mechanical properties of the icosahedral phase reinforced duplex Mg-Li alloy both at room and elevated temperatures
    Xu, D. K.
    Zu, T. T.
    Yin, M.
    Xu, Y. B.
    Han, E. H.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 582 : 161 - 166
  • [18] Microstructure and mechanical behavior of Mg-10Li-3Al-2.5Sr alloy
    Yang, Yan
    Peng, Xiaodong
    Wen, Haiming
    Wei, Guobing
    Xie, Weidong
    Lavernia, Enrique J.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 611 : 1 - 8
  • [19] Influence of Extrusion on the Microstructure and Mechanical Behavior of Mg-9Li-3Al-xSr Alloys
    Yang, Yan
    Peng, Xiaodong
    Wen, Haiming
    Zheng, Baolong
    Zhou, Yizhang
    Xie, Weidong
    Lavernia, Enrique J.
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2013, 44A (02): : 1101 - 1113
  • [20] Effects of heat treatment on interface and mechanical properties of YAl2 reinforced Mg-14Li-3Al matrix composite
    Zhang, Q. Q.
    Wu, G. Q.
    Niu, L. Y.
    Huang, Z.
    Tao, Y.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 564 : 298 - 302
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