Effects of B or C on the macro-and micro-structures of cast near gamma TiAl alloys

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	Effects of B or C on the macro-and micro-structures of cast near gamma TiAl alloys
	Dong, LM; Cui, YY; Yang, R
刊名	ACTA METALLURGICA SINICA
	2002-06-01
卷号	38 期号:6 页码:643-646
关键词	gamma TiAl alloying with B or C grain refinement as-cast alloy
ISSN号	0412-1961
通讯作者	Yang, R()
英文摘要	The effects of B and C on the macro- and micro-structures of near gamma TiAl alloys were compared. The results show that fine equiaxed grains are obtained with increasing concentration of B or C, but grain refinement by the two alloying additions exhibits different features. The grain size of the B containing alloy decreases gradually with increasing B content, whereas for alloying with C, the grain size drops suddenly beyond a critical C content. Microscope observations reveal that even trace lavel of B triggers the formation of TiB2-type boride which exhibits different morphologies with increasing B content. In alloys containing C, carbide particles can not be observed under optical microscope beneath the critical level of C, but large amounts of carbide particles are seen once the critical concentration is reached. The carbide is predominantly Ti2AlC as identified by electron diffraction. A brief analysis was made of the grain refining effects by B and C.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000176623900017
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/115660]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, R
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Dong, LM,Cui, YY,Yang, R. Effects of B or C on the macro-and micro-structures of cast near gamma TiAl alloys[J]. ACTA METALLURGICA SINICA,2002,38(6):643-646.
APA	Dong, LM,Cui, YY,&Yang, R.(2002).Effects of B or C on the macro-and micro-structures of cast near gamma TiAl alloys.ACTA METALLURGICA SINICA,38(6),643-646.
MLA	Dong, LM,et al."Effects of B or C on the macro-and micro-structures of cast near gamma TiAl alloys".ACTA METALLURGICA SINICA 38.6(2002):643-646.