Role of hydrostatic pressure and wall effect in solidification of TC8 alloy

doi:10.1038/s41526-019-0083-2

CORC > 金属研究所 > 中国科学院金属研究所

	Role of hydrostatic pressure and wall effect in solidification of TC8 alloy
	Luo, Xinghong; Wang, Yaya; Li, Yang
刊名	NPJ MICROGRAVITY
	2019-10-11
卷号	5 页码:5
ISSN号	2373-8065
DOI	10.1038/s41526-019-0083-2
通讯作者	Luo, Xinghong(xhluo@imr.ac.cn)
英文摘要	The solidification experiments of TC8 alloy under both microgravity and normal gravity were conducted using a drop tube. The solidification microstructure were found composed of fine equiaxed grains formed at early stage and bigger elongated grains formed at later stage. Between the two kinds of grains a curved transition interface was observed in 1g sample, while that in mu g sample was almost flat. Generally, the amounts and aspect ratios of the grains are larger, and the grain sizes are smaller in 1g sample. Besides, no visible element macrosegregation occurred in both samples. The results suggest that the solidification velocities of the samples were rapid, and consequently the convection effect and solute transport effect caused by gravity had little influence on the solidification microstructure. Therefore, the solidification process was mainly controlled by thermal diffusion, and hydrostatic pressure and wall effect played a great role in it.
资助项目	Chinese manned space flight pre-research project[030302]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SPRINGERNATURE
WOS记录号	WOS:000490596600002
资助机构	Chinese manned space flight pre-research project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/135714]
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, CAS Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Luo, Xinghong,Wang, Yaya,Li, Yang. Role of hydrostatic pressure and wall effect in solidification of TC8 alloy[J]. NPJ MICROGRAVITY,2019,5:5.
APA	Luo, Xinghong,Wang, Yaya,&Li, Yang.(2019).Role of hydrostatic pressure and wall effect in solidification of TC8 alloy.NPJ MICROGRAVITY,5,5.
MLA	Luo, Xinghong,et al."Role of hydrostatic pressure and wall effect in solidification of TC8 alloy".NPJ MICROGRAVITY 5(2019):5.