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Effects of Solidification Conditions on the Crystal Selection Behavior of an Al Base Alloy During Directional Solidification
Liu, Jin-lai; Jin, Tao; Luo, Xiong-hong; Feng, Shao-bo; Zhao, Jiu-zhou; Liu, JL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-05-01
发表期刊MICROGRAVITY SCIENCE AND TECHNOLOGY
ISSN0938-0108
卷号28期号:2页码:109-113
摘要Al base alloy can be used as model alloy of Ni base single crystal superalloy due to their similarity on microstructure, while its lower melt temperature can match the restricted temperature of furnace working in space. The crystal selection behavior Al base alloy during directional solidification is studied by Bridgman process. With rise of heating temperature and decrease of withdraw rate, the number of grains passed spiral selector reduces. At heating temperature 900 C-a similar to and withdraw rate 2mm/min, an Al base single crystal alloy can be produced. At higher heating temperature more Mg segregates to dendrite stem, which cause smaller liquid volume fraction. At lower withdraw rate less Cu segregate to interdendrite region, which cause reduced constitutional undercooling. These two factors lead to the shrinkage of secondary dendrite arm, thus the efficiency of spiral selector is improved.
部门归属[liu, jin-lai ; jin, tao ; luo, xiong-hong ; feng, shao-bo ; zhao, jiu-zhou] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词Space Materials Science Single Crystal Superalloy Solidification Defect Dendrite Crystal Selection
学科领域Engineering ; Thermodynamics ; Mechanics
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75885
专题中国科学院金属研究所
通讯作者Liu, JL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Liu, Jin-lai,Jin, Tao,Luo, Xiong-hong,et al. Effects of Solidification Conditions on the Crystal Selection Behavior of an Al Base Alloy During Directional Solidification[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2016,28(2):109-113.
APA Liu, Jin-lai,Jin, Tao,Luo, Xiong-hong,Feng, Shao-bo,Zhao, Jiu-zhou,&Liu, JL .(2016).Effects of Solidification Conditions on the Crystal Selection Behavior of an Al Base Alloy During Directional Solidification.MICROGRAVITY SCIENCE AND TECHNOLOGY,28(2),109-113.
MLA Liu, Jin-lai,et al."Effects of Solidification Conditions on the Crystal Selection Behavior of an Al Base Alloy During Directional Solidification".MICROGRAVITY SCIENCE AND TECHNOLOGY 28.2(2016):109-113.
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