Interphase boundary segregation of Zn in Mg-Sn-Zn alloys

被引：94
作者：
Liu, Chaoqiang [1 ]
Chen, Houwen [1 ]
Nie, Jian-Feng [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia
来源：
SCRIPTA MATERIALIA | 2016年 / 123卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloys; Precipitates; Interface segregation; HAADF-STEM; EDS-STEM; AGE-HARDENING RESPONSE; AL-CU; SOLUTE SEGREGATION; MAGNESIUM ALLOYS; OMEGA PHASE; SI ALLOY; EVOLUTION; PRECIPITATION; TEMPERATURE; INTERFACES;
D O I：
10.1016/j.scriptamat.2016.05.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Additions of Zn can significantly improve the age-hardening response of binary Mg-Sn alloys by refining the distribution of Mg2Sn precipitates, but its role in the precipitation is still unclear. In this study, the Mg2Sn precipitates with different morphologies and orientations in a Mg-9.8Sn-1.2Zn (wt.%) alloy are characterized by high angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and STEM X-ray mapping. It is found that Zn atoms invariably segregate to the Mg2Sn-Mg interface, irrespective of the interfacial structures and orientation relationships of Mg2Sn. This finding provides insight to the understanding of the enhanced nucleation of Mg2Sn precipitates in Mg-Sn-Zn alloys. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5 / 8
页数：4
相关论文
共 37 条
  • [21] Periodic Segregation of Solute Atoms in Fully Coherent Twin Boundaries
    Nie, J. F.
    Zhu, Y. M.
    Liu, J. Z.
    Fang, X. Y.
    [J]. SCIENCE, 2013, 340 (6135) : 957 - 960
  • [22] Solute segregation and precipitation in a creep-resistant Mg-Gd-Zn alloy
    Nie, J. F.
    Oh-ishi, K.
    Gao, X.
    Hono, K.
    [J]. ACTA MATERIALIA, 2008, 56 (20) : 6061 - 6076
  • [23] Precipitation and Hardening in Magnesium Alloys
    Nie, Jian-Feng
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2012, 43A (11): : 3891 - 3939
  • [24] Evolution of Ω phase in an Al-Cu-Mg-Ag alloy -: A three-dimensional atom probe study
    Reich, L
    Murayama, M
    Hono, K
    [J]. ACTA MATERIALIA, 1998, 46 (17) : 6053 - 6062
  • [25] Effect of Rare-Earth Additions on the Texture of Wrought Magnesium Alloys: The Role of Grain Boundary Segregation
    Robson, Joseph D.
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (08): : 3205 - 3212
  • [26] Silver segregation to θ′ (Al2Cu)-Al interfaces in Al-Cu-Ag alloys
    Rosalie, Julian M.
    Bourgeois, Laure
    [J]. ACTA MATERIALIA, 2012, 60 (17) : 6033 - 6041
  • [27] A high-strength Mg-Sn-Zn-Al alloy extruded at low temperature
    Sasaki, T. T.
    Yamamoto, K.
    Honma, T.
    Kamado, S.
    Hono, K.
    [J]. SCRIPTA MATERIALIA, 2008, 59 (10) : 1111 - 1114
  • [28] Enhanced age hardening response by the addition of Zn in Mg-Sn alloys
    Sasaki, T. T.
    Oh-ishi, K.
    Ohkubo, T.
    Hono, K.
    [J]. SCRIPTA MATERIALIA, 2006, 55 (03) : 251 - 254
  • [29] Strong and ductile heat-treatable Mg-Sn-Zn-Al wrought alloys
    Sasaki, T. T.
    Elsayed, F. R.
    Nakata, T.
    Ohkubo, T.
    Kamado, S.
    Hono, K.
    [J]. ACTA MATERIALIA, 2015, 99 : 176 - 186
  • [30] Effect of double aging and microalloying on the age hardening behavior of a Mg-Sn-Zn alloy
    Sasaki, T. T.
    Oh-ishi, K.
    Ohkubo, T.
    Hono, K.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 530 : 1 - 8
1234