Compositional optimization of Mg-Sn-Al alloys for higher age hardening response

被引：97
作者：
Elsayed, F. R. [1 ,2 ]
Sasaki, T. T. [1 ]
Mendis, C. L. [1 ]
Ohkubo, T. [1 ]
Hono, K. [1 ,2 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3050006, Japan
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 566卷
关键词：
Magnesium alloy; Precipitation hardening; Mg-Sn; Mg wrought alloy; ZN ALLOY; LOW-TEMPERATURE; PRECIPITATION; SYSTEM; TEM; CA;
D O I：
10.1016/j.msea.2012.12.041
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of Al additions and microalloying on the age hardening response of Mg-Sn alloys has been investigated to optimize the composition for the highest age hardening response. The addition of 3 at%Al lead to the best enhancement in peak hardness being 72 HV at 200 degrees C. The age hardening response was further enhanced from 73 to 81 HV by microalloying with 0.5 Zn, leading to the optimized alloy composition of Mg-2.2Sn-3Al-0.5Zn (at%) or Mg-9.8Sn-3.0Al-1.2Zn (wt%), i.e., TAZ1031. The enhancement in the peak strength and aging behavior is attributed to the solid solution hardening due to Al, the refinement of the Mg2Sn precipitates, the occurrence of Mg17Al12 precipitates, and the increase in the number density of non-basal Mg2Sn precipitates. (c) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：22 / 29
页数：8
相关论文
共 24 条
  • [1] Investigations in the magnesium-tin system
    Bowles, AL
    Dieringa, H
    Blawert, C
    Hort, N
    Kainer, KU
    [J]. MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS, 2005, 488-489 : 135 - 138
  • [2] TEM study of continuous precipitation in Mg-9 Wt%Al-l Wt%Zn alloy
    Celotto, S
    [J]. ACTA MATERIALIA, 2000, 48 (08) : 1775 - 1787
  • [3] Strength and ductility of novel Mg-8Sn-1Al-1Zn alloys extruded at different speeds
    Cheng, W. L.
    Kim, H. S.
    You, B. S.
    Koo, B. H.
    Park, S. S.
    [J]. MATERIALS LETTERS, 2011, 65 (11) : 1525 - 1527
  • [4] TRANSMISSION ELECTRON MICROSCOPY STUDY OF AGE HARDENING IN A MG-5 WT PER CENT ZN ALLOY
    CLARK, JB
    [J]. ACTA METALLURGICA, 1965, 13 (12): : 1281 - &
  • [5] AGE HARDENING IN A MG-9 WT PERCENT A1 ALLOY
    CLARK, JB
    [J]. ACTA METALLURGICA, 1968, 16 (02): : 141 - &
  • [6] Derge G, 1937, T AM I MIN MET ENG, V124, P367
  • [7] HENES S, 1962, Z METALLKD, V53, P743
  • [8] Microstructural investigations of the Mg-Sn-xCa system
    Hort, Norbert
    Huang, Ybanding
    Abu Leil, Torek
    Maier, Petra
    Kainer, Karl Ulrich
    [J]. ADVANCED ENGINEERING MATERIALS, 2006, 8 (05) : 359 - 364
  • [9] Enhanced age hardening in a Mg-2.4 at.% Zn alloy by trace additions of Ag and Ca
    Mendis, C. L.
    Oh-ishi, K.
    Hono, K.
    [J]. SCRIPTA MATERIALIA, 2007, 57 (06) : 485 - 488
  • [10] An enhanced age hardening response in Mg-Sn based alloys containing Zn
    Mendis, C. L.
    Bettles, C. J.
    Gibson, M. A.
    Hutchinson, C. R.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 435 : 163 - 171
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