Research on microstructure and alloy phases of AM50 magnesium alloy

被引:38
|
作者
Ma, Yanlong [1 ]
Zhang, Jin [1 ,2 ]
Yang, Mingbo [1 ]
机构
[1] Chongqing Inst Technol, Coll Mat Sci & Engn, Chongqing 400050, Peoples R China
[2] Univ Sci & Technol Beijing, Coll Mat Sci & Engn, Beijing 100083, Peoples R China
关键词
AM50 Mg alloy; Heat treatment; Al-Mn phases; Corrosion resistance; CORROSION; CASTINGS;
D O I
10.1016/j.jallcom.2008.03.047
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
Comprehensive researches on the microstructure and alloy phases of AM50 magnesium alloy of different status, varying from casting to solid-solution treated and aged ones, were carried out in the present paper. Special attention was drawn to Al-Mn phases and their effects on electrochemical properties of the alloy. The results indicated that Al-Mn phases were the major alloy phases in as-cast, solid-solution treated and aged AM50 alloys. They were quite heat-resistant and almost kept unchanged in terms of morphology, distribution and amount. The majority of Mg(17)Al(12) phase in as-cast alloy could be reduced when the temperature of solid-solution treatment was up to 410 degrees C and it precipitated as reinforcing phase during aging treatment. According to the microstructure and the corresponding microhardness analysis, it was believed that the strengthening mechanism of AM50 might not be limited to precipitation reinforcement; some other factors such as substructure and re-distribution of alloy elements might play critical roles too. Electrochemical experiments further showed that Al-Mn phases were detrimental to the corrosion resistance of the alloy in question, especially when Al-rich alpha-Mg and beta-Mg(17)Al(12) phases were eliminated. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:515 / 521
页数:7
相关论文
共 50 条
  • [1] An investigation on the microstructure of an AM50 magnesium alloy
    Wang, RM
    Eliezer, A
    Gutman, EM
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 355 (1-2): : 201 - 207
  • [2] Thixoforming of AM50 magnesium alloy
    Chen, Tian
    Wang, Linzhi
    Yang, Jie
    Lu, Shengjun
    International Journal of Advanced Manufacturing Technology, 2017, 90 (5-8): : 1639 - 1647
  • [3] Thixoforming of AM50 magnesium alloy
    Chen, Tian
    Wang, Linzhi
    Yang, Jie
    Lu, Shengjun
    INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2017, 90 (5-8): : 1639 - 1647
  • [4] Effects of Heat Treatments on Microstructure of AM50 Magnesium Alloy
    Ma, Yanlong
    Pan, Fusheng
    Yang, Mingbo
    ADVANCED MATERIALS AND PROCESSING, 2007, 26-28 : 103 - +
  • [5] Thixoforming of AM50 magnesium alloy
    Tian Chen
    Linzhi Wang
    Jie Yang
    Shengjun Lu
    The International Journal of Advanced Manufacturing Technology, 2017, 90 : 1639 - 1647
  • [6] Microstructure and tensile properties of squeeze cast magnesium alloy AM50
    Zhou, M
    Hu, H
    Li, NY
    Lo, J
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2005, 14 (04) : 539 - 545
  • [7] Microstructure and tensile properties of squeeze cast magnesium alloy AM50
    Ming Zhou
    Henry Hu
    Naiyi Li
    Jason Lo
    Journal of Materials Engineering and Performance, 2005, 14 : 539 - 545
  • [8] Experimental research of laser shock strengthening AM50 magnesium alloy
    School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
    不详
    Zhongguo Jiguang, 2008, 7 (1068-1072):
  • [9] Effect of CaO Addition on Microstructure and Damping Capacity of AM50 Magnesium Alloy
    Jun, Joong-Hwan
    MATERIALS TRANSACTIONS, 2013, 54 (03) : 409 - 411
  • [10] Creep characteristics of a diecast AM50 magnesium alloy
    Naoya Ishimatsu
    Yoshihiro Terada
    Tatsuo Sato
    Koichi Ohori
    Metallurgical and Materials Transactions A, 2006, 37 : 243 - 248