Differences in microstructure of Pd77.5Au6Si16.5 alloy solidified under microgravity and gravity conditions

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	Differences in microstructure of Pd77.5Au6Si16.5 alloy solidified under microgravity and gravity conditions
	Liu, RP ; Zhao, JH ; Zhang, XY ; He, DW ; Qin, ZC ; Xu, YF ; Wang, WK
刊名	SCIENCE IN CHINA SERIES A-MATHEMATICS
	1999
卷号	42 期号:1 页码:74
关键词	PHASE
ISSN号	1006-9283
通讯作者	Liu, RP: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	The microstructure of Pd77.5Au6Si16.5 ahoy solidified both on board a Chinese Retrievable Satellite and on the earth is studied. Postmortem analyses of microstructure presented that the same types of phases, primary phase (Pd3Si) and eutectics (Pd3Si + Pd solid solution) were formed in both cases. But the phase morphologies were quite different. It was dendritic for the primary phase and lamellar for the eutectics under normal gravity condition. However, under microgravity condition the primary phase was granular and the eutectic was peculiar network. Detailed analysis showed that the differences in morphologies of the microstructure were due to the existence of gravity-induced buoyancy convection on the earth which increased the mass transport abilities and decreased the thickness of the solute boundary in front of the solid-liquid interface during solidification under normal gravity condition.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/35942]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Liu, RP,Zhao, JH,Zhang, XY,et al. Differences in microstructure of Pd77.5Au6Si16.5 alloy solidified under microgravity and gravity conditions[J]. SCIENCE IN CHINA SERIES A-MATHEMATICS,1999,42(1):74.
APA	Liu, RP.,Zhao, JH.,Zhang, XY.,He, DW.,Qin, ZC.,...&Wang, WK.(1999).Differences in microstructure of Pd77.5Au6Si16.5 alloy solidified under microgravity and gravity conditions.SCIENCE IN CHINA SERIES A-MATHEMATICS,42(1),74.
MLA	Liu, RP,et al."Differences in microstructure of Pd77.5Au6Si16.5 alloy solidified under microgravity and gravity conditions".SCIENCE IN CHINA SERIES A-MATHEMATICS 42.1(1999):74.