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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
Source PublicationMICROGRAVITY SCIENCE AND TECHNOLOGY
ISSN0938-0108
Volume28Issue:2Pages:109-113
AbstractAl 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.
description.department[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
KeywordSpace Materials Science Single Crystal Superalloy Solidification Defect Dendrite Crystal Selection
Subject AreaEngineering ; Thermodynamics ; Mechanics
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75885
Collection中国科学院金属研究所
Corresponding AuthorLiu, JL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
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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