A new way to explore microgravity effect by drop tube experiment

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	A new way to explore microgravity effect by drop tube experiment
	Chen Liang; Luo Xinghong
刊名	ACTA METALLURGICA SINICA
	2007-07-01
卷号	43 期号:7 页码:769-774
关键词	drop tube microgravity solidification convection
ISSN号	0412-1961
通讯作者	Luo Xinghong(xhluo@imr.ac.cn)
英文摘要	Based on calculating the thermal history and the gravity level of some metallic droplets during their dropping in drop tube under different conditions, the limitation of drop tube investigation on microgravity was analyzed and discussed. In order to solve the problem that the effects of microgravity and undercooling were usually coupled and difficult to distinguish, some liquid metals with low melt points, low radiant emissivities and relative high specific heats, such as A1 and Cu alloys, were quenched into silieone oil before and after falling. The difference of microstructures between the both conditions was analyzed both theoretically and experimentally. The results showed that this way could make the temperature difference of droplets before and after falling to be neglected, and thus the microgravity effects on alloy solidification would be much more conspicuously identified. Therefore, the extent of material investigations by drop tubes was expanded.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000248548200019
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/91028]
专题	金属研究所_中国科学院金属研究所
通讯作者	Luo Xinghong
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Chen Liang,Luo Xinghong. A new way to explore microgravity effect by drop tube experiment[J]. ACTA METALLURGICA SINICA,2007,43(7):769-774.
APA	Chen Liang,&Luo Xinghong.(2007).A new way to explore microgravity effect by drop tube experiment.ACTA METALLURGICA SINICA,43(7),769-774.
MLA	Chen Liang,et al."A new way to explore microgravity effect by drop tube experiment".ACTA METALLURGICA SINICA 43.7(2007):769-774.