The effect of twin-twin interaction in Mg-3Al-1Zn alloy during compression

被引：33
作者：
Shi, Dongfeng [1 ,2 ]
Liu, Tianmo [1 ,2 ]
Hou, Dewen [1 ,2 ]
Chen, Huicong [1 ,2 ]
Pan, Fusheng [1 ,2 ]
Chen, Hongbing [3 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
[3] Southwest Univ, Coll Engn & Technol, Chongqing 400716, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 685卷
关键词：
Magnesium alloy; Twin-twin interactions/boundaries; Twin variant; Schmid factor; VARIANT SELECTION; MAGNESIUM; NUCLEATION; GROWTH; IDENTIFICATION; PROPAGATION; DEPENDENCE; MODEL;
D O I：
10.1016/j.jallcom.2016.05.338
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electron backscattered diffraction serial image analyses on AZ31 magnesium alloy compressed along RD at different strain levels revealed that twin-twin interactions are found to correlate with mechanical hardening. Four typical twin-twin structures are investigated: (1) Parallel twins with single variant; (2) Interacting twins with single variant; (3) Parallel twins with double variants; (4) Interacting twins with double variants. We studied twin-twin interactions by combining experimental observations and Schmid factor analysis. Due to twins intersecting with each other, the limited growth rate of twins was observed in EBSD maps. The intersection between different twin variant pairs was found to retard the twin growth and promote the nucleation of new twins near intersection region. Besides, "Apparent crossing" twin structure is a limiting case, in which the twin is crossed by a couple of twins, and the interaction region grow slowly. Twin-twin boundary migration is also observed during deformation in this paper, which is considered as an important cause to prohibit twins for further propagate and growth. All these features can be related to twinning-induced hardening. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：428 / 435
页数：8
相关论文
共 26 条
  • [1] A rationale for the strong dependence of mechanical twinning on grain size
    Barnett, M. R.
    [J]. SCRIPTA MATERIALIA, 2008, 59 (07) : 696 - 698
  • [2] Twinning and the ductility of magnesium alloys Part I: "Tension" twins
    Barnett, M. R.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 464 (1-2): : 1 - 7
  • [3] Influence of orientation on twin nucleation and growth at low strains in a magnesium alloy
    Barnett, M. R.
    Ghaderi, A.
    da Fonseca, J. Quinta
    Robson, J. D.
    [J]. ACTA MATERIALIA, 2014, 80 : 380 - 391
  • [4] Effect of microstructure on the nucleation of deformation twins in polycrystalline high-purity magnesium: A multi-scale modeling study
    Beyerlein, I. J.
    McCabe, R. J.
    Tome, C. N.
    [J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2011, 59 (05) : 988 - 1003
  • [5] Grain growth in calibre rolled Mg-3Al-1Zn alloy and its effect on hardness
    Doiphode, R. L.
    Murty, S. V. S. Narayana
    Prabhu, N.
    Kashyap, B. P.
    [J]. JOURNAL OF MAGNESIUM AND ALLOYS, 2015, 3 (04) : 322 - 329
  • [6] The effect of twin-twin interactions on the nucleation and propagation of {10(1)over-bar2} twinning in magnesium
    El Kadiri, Haitham
    Kapil, J.
    Oppedal, A. L.
    Hector, L. G., Jr.
    Agnew, Sean R.
    Cherkaoui, M.
    Vogel, S. C.
    [J]. ACTA MATERIALIA, 2013, 61 (10) : 3549 - 3563
  • [7] Influence of observation plane on twin variant identification in magnesium via trace and misorientation analysis
    Guo, Changfa
    Xin, Renlong
    Zheng, Xuan
    Xiao, Yue
    Ding, Changhong
    Liu, Qing
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 618 : 558 - 562
  • [8] Understanding of variant selection and twin patterns in compressed Mg alloy sheets via combined analysis of Schmid factor and strain compatibility factor
    Guo, Changfa
    Xin, Renlong
    Ding, Changhong
    Song, Bo
    Liu, Qing
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 609 : 92 - 101
  • [9] The effects of compressive pre-deformation on yield asymmetry in hot-extruded Mg-3Al-1Zn alloy
    He, Jiejun
    Liu, Tianmo
    Xu, Shun
    Zhang, Yin
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 579 : 1 - 8
  • [10] Strain path dependence of {10-12} twinning activity in a polycrystalline magnesium alloy
    Hong, Seong-Gu
    Park, Sung Hyuk
    Lee, Chong Soo
    [J]. SCRIPTA MATERIALIA, 2011, 64 (02) : 145 - 148
123