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

IMR OpenIR

	Effects of B or C on the macro-and micro-structures of cast near gamma TiAl alloys
	Dong, LM; Cui, YY; Yang, R
通讯作者	Yang, R()
	2002-06-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	38 期号:6 页码:643-646
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.
关键词	gamma TiAl alloying with B or C grain refinement as-cast alloy
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000176623900017
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/115661
专题	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.