Microstructures and mechanical properties of high performance Mg-4Y-2.4Nd-0.2Zn-0.4Zr alloy

被引：60
作者：
Su, Zaijun [1 ]
Liu, Chuming [1 ]
Wan, Yingchun [1 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
来源：
MATERIALS & DESIGN | 2013年 / 45卷
关键词：
Y-ND ALLOY; MAGNESIUM ALLOYS; AGING PRECIPITATION; WT.PERCENT ALLOY; MG; ZN; 250-DEGREES-C; EVOLUTION; PHASES;
D O I：
10.1016/j.matdes.2012.07.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructures and mechanical properties of the high performance Mg-4Y-2.4Nd-0.2Zn-0.4Zr alloy were investigated. The results showed that the alloy was mainly composed of alpha-Mg, Mg24Y5 and Mg12Nd phases in the as-cast condition. After the solution treatment at 500 degrees C for 6 h and subsequent ageing at different temperatures, alloy exhibited the remarkable mechanical properties. The values of ultimate tensile strength, yield strength and elongation were 339 MPa, 268 MPa and 4.0% in 200 degrees C peak-aged condition, and 330 MPa, 265 MPa and 6.5% in 225 degrees C peak-aged condition, respectively. The high mechanical properties were mainly attributed to a high volume fraction of fine metastable precipitates in the matrix. (C) 2012 Elsevier Ltd. All rights reserved.
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页码：466 / 472
页数：7
相关论文
共 27 条
  • [1] [Anonymous], 2003, Magnesium alloys containing rare earth metals: structure and properties
  • [2] [Anonymous], 2010, E11210 ASTM
  • [3] Hardening precipitation in a Mg-4Y-3RE alloy
    Antion, C
    Donnadieu, P
    Perrard, F
    Deschamps, A
    Tassin, C
    Pisch, A
    [J]. ACTA MATERIALIA, 2003, 51 (18) : 5335 - 5348
  • [4] Structural refinement of cast magnesium alloys
    Bamberger, M
    [J]. MATERIALS SCIENCE AND TECHNOLOGY, 2001, 17 (01) : 15 - 24
  • [5] Fracture behavior and mechanical properties of Mg-4Y-2Nd-1Gd-0.4Zr (wt.%) alloy
    Fu Penghuai
    Peng Liming
    Hang Haiyan
    Zhang Zhenyan
    Zhai Chunquan
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2): : 572 - 579
  • [6] Effects of heat treatments on the microstructures and mechanical properties of Mg-3Nd-0.2Zn-0.4Zr (wt.%) alloy
    Fu Penghuai
    Peng Liming
    Jiang Haiyan
    Chang Jianwei
    Zhai Chunquan
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2): : 183 - 192
  • [7] Microstructure and strengthening mechanism of high strength Mg-10Gd-2Y-0.5Zr alloy
    He, S. M.
    Zeng, X. Q.
    Peng, L. M.
    Gao, X.
    Nie, J. F.
    Ding, W. J.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 427 (1-2) : 316 - 323
  • [8] Effect of Zn additions on the age-hardening of Mg-2.0Gd-1.2Y-0.2Zr alloys
    Honma, T.
    Ohkubo, T.
    Kamado, S.
    Hono, K.
    [J]. ACTA MATERIALIA, 2007, 55 (12) : 4137 - 4150
  • [9] Hull D., 2011, Introduction to Dislocations
  • [10] Kainer K.U., 2003, MAGNESIUM ALLOYS TEC
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