Effect of Sr on microstructure and aging behavior of Mg-14Li alloys

被引：18
作者：
Jiang, Bin [1 ,2 ,3 ]
Zeng, Ying [2 ]
Yin, Hengmei [1 ,2 ]
Li, Ruihong [1 ,2 ]
Pan, Fusheng [1 ,2 ]
机构：
[1] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400030, Peoples R China
[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China
[3] Chongqing Acad Sci & Technol, New Mat Ctr, Chongqing 401123, Peoples R China
来源：
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2012年 / 22卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Magnesium-lithium alloys; Microstructure; Grain refinement; Aging behavior; GRAIN-REFINEMENT; MECHANICAL-PROPERTIES; PRECIPITATION PHENOMENA; ALUMINUM-ALLOYS; BETA-PHASE; STRONTIUM;
D O I：
10.1016/j.pnsc.2012.03.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The as-cast and as-extruded Mg-14 wt%Li-xSr (x=0.14, 0.19, 0.39 wt%) alloys were, respectively, prepared through a simple alloying process and hot extrusion. The effects of Sr addition on microstructure and aging behavior of the Mg-14 wt%Li-xSr alloys were studied. The results indicated that beta(Li) and Mg2Sr were the two primary phases in the microstructures of both as-cast and as-extruded Mg 14 wt%Li xSr alloys. Interestingly, with the increase of Sr content from 0.14 wt% to 0.39 wt%, the grain sizes of the as-cast and as-extruded Mg-14 wt%Li xSr alloys markedly decreased from 5000 mu m and 38 mu m to 330 mu m and 22 mu m respectively, while no obvious changes of the micro-hardness and microstructure of the as-extruded alloys were observed during the aging treatment. (C) 2012. Chinese Materials Research Society. Production and hosting by Elsevier Ltd. All rights reserved.
引用
收藏
页码：160 / 168
页数：9
相关论文
共 41 条
  • [1] Magnesium alloys development towards the 21st century
    Aghion, E
    Bronfin, B
    [J]. MAGNESIUM ALLOYS 2000, 2000, 350-3 : 19 - 28
  • [2] PRECIPITATION PHENOMENA IN THE MG-31 AT PERCENT LI-1 AT PERCENT AL-ALLOY
    ALAMO, A
    BANCHIK, AD
    [J]. JOURNAL OF MATERIALS SCIENCE, 1980, 15 (01) : 222 - 229
  • [3] Effect of Al contents on microstructures, tensile and creep properties of Mg-Al-Sr-Ca alloy
    Bai, Jing
    Sun, Yangshan
    Xue, Feng
    Xue, Shan
    Qiang, Jing
    Zhu, Tianbai
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 437 (1-2) : 247 - 253
  • [4] Effects of various Mg-Sr master alloys on microstructural refinement of ZK60 magnesium alloy
    Cheng Ren-ju
    Pan Fu-sheng
    Yang Ming-bo
    Tang Ai-tao
    [J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2008, 18 : S50 - S54
  • [5] CLARK JB, 1958, J I MET, V86, P272
  • [6] On the transformation characteristics of LA141A (Mg-Li-Al) alloy
    Crawford, P
    Barrosa, R
    Mendez, J
    Foyos, J
    EsSaid, OS
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1996, 56 (1-4) : 108 - 118
  • [7] Current issues in recrystallization: a review
    Doherty, RD
    Hughes, DA
    Humphreys, FJ
    Jonas, JJ
    Jensen, DJ
    Kassner, ME
    King, WE
    McNelley, TR
    McQueen, HJ
    Rollett, AD
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (02): : 219 - 274
  • [8] Grain refinement of aluminum alloys: Part I. The nucleant and salute paradigms - A review of the literature
    Easton, M
    StJohn, D
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (06): : 1613 - 1623
  • [9] Grain refinement of Mg-Al(-Mn) alloys by SiC additions
    Easton, Mark A.
    Schiffl, Andreas
    Yao, Ji-Yong
    Kaufmann, Helmut
    [J]. SCRIPTA MATERIALIA, 2006, 55 (04) : 379 - 382
  • [10] The development of a new grain refiner for magnesium alloys using the edge-to-edge model
    Fu, H. M.
    Qiu, D.
    Zhang, M. X.
    Wang, H.
    Kelly, P. M.
    Taylor, J. A.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 456 (1-2) : 390 - 394
12345