{10(1)over-bar1} twin boundary showing very large deviation from the theoretical one in deformed magnesium alloy

被引：11
作者：
Zhang, Jing [1 ,2 ]
Xi, Guoqiang [1 ]
Wan, Xin [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2017年 / 132卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; Twinning; Twin boundary; HRTEM; 0 (1)OVER-BAR 2; INTERFACIAL STRUCTURE; DISLOCATIONS; SEGREGATION;
D O I：
10.1016/j.matchar.2017.08.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Structure of {1011) twin boundary in an AZ31 magnesium alloy has been characterized by means of transmission electron microscopy (TEM) and high-resolution TEM. It is found that actual twin boundary entirely departs from theoretical twinning plane in [10 (1) over bar1 twin system. Furthermore, it is shown that six kinds of facets, including [10 (1) over bar1 coherent twin boundaries, {0002}parallel to 10 (1) over bar(1) over bar} basal-pyramidal (BPy), (1) over bar0 (1) over bar(1) over bar)parallel to{0002} pyramidal-basal (PyB), {(1) over bar 010}parallel to{10 (1) over bar3} prismatic-third pyramidal (P3Py), basal-prismatic (BP/PB) boundaries and {10 (1) over bar2} coherent twin boundaries, can coexist in one {10 (1) over bar1) twin system. Based on these structure features, the underling mechanisms responsible for large deviation phenomenon are discussed, with focus on BPy, PyB, P3Py boundaries and strain accommodation.
引用
收藏
页码：280 / 283
页数：4
相关论文
共 30 条
  • [1] 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
  • [2] Impact of deformation faceting on {1 0 (1)over-bar 2}, {1 0 (1)over-bar 1} and {1 0 (1)over-bar3} embryonic twin nucleation in hexagonal close-packed metals
    Barrett, Christopher D.
    El Kadiri, Haitham
    [J]. ACTA MATERIALIA, 2014, 70 : 137 - 161
  • [3] The roles of grain boundary dislocations and disclinations in the nucleation of {10(1)over-bar12} twinning
    Barrett, Christopher D.
    El Kadiri, Haitham
    [J]. ACTA MATERIALIA, 2014, 63 : 1 - 15
  • [4] Double twinning mechanisms in magnesium alloys via dissociation of lattice dislocations
    Beyerlein, I. J.
    Wang, J.
    Barnett, M. R.
    Tome, C. N.
    [J]. PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2012, 468 (2141): : 1496 - 1520
  • [5] 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
  • [6] Twinning effects on the hot deformation behavior of AZ31 Mg alloy
    Chen, Yuanli
    Jin, Li
    Dong, Jie
    Zhang, Zhenyan
    Wang, Fenghua
    [J]. MATERIALS CHARACTERIZATION, 2016, 118 : 363 - 369
  • [7] DEFORMATION TWINNING
    CHRISTIAN, JW
    MAHAJAN, S
    [J]. PROGRESS IN MATERIALS SCIENCE, 1995, 39 (1-2) : 1 - 157
  • [8] Transmission electron microscopy study of stacking faults and their interaction with pyramidal dislocations in deformed Mg
    Li, B.
    Yan, P. F.
    Sui, M. L.
    Ma, E.
    [J]. ACTA MATERIALIA, 2010, 58 (01) : 173 - 179
  • [9] Faceted interfacial structure of {10(1)over-bar1} twins in Ti formed during equal channel angular pressing
    Li, Y. J.
    Chen, Y. J.
    Walmsley, J. C.
    Mathinsen, R. H.
    Dumoulin, S.
    Roven, H. J.
    [J]. SCRIPTA MATERIALIA, 2010, 62 (07) : 443 - 446
  • [10] Terrace-like morphology of the boundary created through basal-prismatic transformation in magnesium
    Liu, Bo-Yu
    Wan, Liang
    Wang, Jian
    Ma, Evan
    Shan, Zhi-Wei
    [J]. SCRIPTA MATERIALIA, 2015, 100 : 86 - 89
123