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

页码：266 / 275

页数：10

共 20 条

[1] Grain evolution analysis and experimental validation in the extrusion of 6XXX alloys by use of a lagrangian FE code
Donati, Lorenzo
Segatori, Antonio
El Mehtedi, Mohamad
Tomesani, Luca
[J]. INTERNATIONAL JOURNAL OF PLASTICITY, 2013, 46 : 70 - 81
[2] Evolution of microstructure and mechanical properties of a duplex Mg-Li alloy under extrusion with an increasing ratio
Dong, Hanwu
Pan, Fusheng
Jiang, Bin
Zeng, Ying
[J]. MATERIALS & DESIGN, 2014, 57 : 121 - 127
[3] Deformation behaviour of Mg-Li-Al alloys
Drozd, Z
Trojanová, Z
Kúdela, S
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 378 (1-2) : 192 - 195
[4] Simulation and control of microstructure evolution during hot extrusion of hard alumunium alloys
Duan, XJ
Sheppard, T
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 351 (1-2): : 282 - 292
[5] Modelling of the flow behaviour of wrought aluminium alloys at elevated temperatures by a new constitutive equation
El Mehtedi, M.
Musharavati, F.
Spigarelli, S.
[J]. MATERIALS & DESIGN, 2014, 54 : 869 - 873
[6] Mechanical properties, microstructure and micro-texture evolution for 1050AA deformed by equal channel angular pressing (ECAP) and post ECAP plane strain compression using two loading schemes
El-Danaf, Ehab A.
[J]. MATERIALS & DESIGN, 2012, 34 : 793 - 807
[7] Effect of extrusion on microstructures, and mechanical and creep properties of Mg-Al-Sr and Mg-Al-Sr-Ca alloys
Jing, Bai
Yangshan, Sun
Feng, Xue
Shan, Xue
Jing, Qiang
Tao Weijian
[J]. SCRIPTA MATERIALIA, 2006, 55 (12) : 1163 - 1166
[8] Dynamic recrystallization behavior and hot workability of Mg-2.0Zn-0.3Zr-0.9Y alloy by using hot compression test
Lv, Bin-Jiang
Peng, Jian
Wang, Yong-Jian
An, Xiao-Qin
Zhong, Li-Ping
Tang, Ai-Tao
Pan, Fu-Sheng
[J]. MATERIALS & DESIGN, 2014, 53 : 357 - 365
[9] Numerical modelling of the material flow during extrusion of aluminium alloys and transverse weld formation
Mahmoodkhani, Yahya
Wells, Mary A.
Parson, Nick
Poole, W. J.
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2014, 214 (03) : 688 - 700
[10] Coupled Analysis of Heat Transfer and Deformation in Equal Channel Angular Pressing of Al and Steel
Quang, Pham
Krishnaiah, A.
Hong, Sun Ig
Kim, Hyoung Seop
[J]. MATERIALS TRANSACTIONS, 2009, 50 (01) : 40 - 43

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