STUDY OF MICROSTRUCTURES IN gamma/gamma '-alpha Mo DIRECTIONAL EUTECTOID ALLOY INDUCED BY LASER RAPID MELTING SOLIDIFICATION

IMR OpenIR

	STUDY OF MICROSTRUCTURES IN gamma/gamma '-alpha Mo DIRECTIONAL EUTECTOID ALLOY INDUCED BY LASER RAPID MELTING SOLIDIFICATION
	Jin Tao; Sun Xiaofeng; Zhao Nairen; Liu Jinlai; Zhang Jinghua; Hu Zhuangqi
通讯作者	Jin Tao(tjin@imr.ac.cn)
	2009-05-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	45 期号:5 页码:527-535
摘要	The principle purpose of surface modification by laser rapid melting solidification is to improve the surface properties of materals through the change of their surface microstructures. The gamma/gamma'-alpha Mo directional eutectoid alloy consisting of a chemical composition (atomic fraction) of 15.41%Al, 2.56%V, 3.25%Cr, 8.41%Mo and balance Ni was chosen in the present study. The master alloy was melted in a vacuum induction furnace, and then the directional eutectoid specimens were prepared in a vacuum solidified furnace. Two ways, i.e. pulse and scan, were used for the surface laser treatment. A finer directional eutectoid structure grows again in the melting zone when the laser pulse is parallel to the eutectoid growth direction. However, when the laser pulse is perpendicular to the eutectoid growth direction, the microstructures of melting zone are composed of much denser cell-like crystalline and dendrites. The dendritic arm in dendrite structure after laser melting consists of the gamma-solid solution and the fine gamma'-participites, and the microstructures in the interdendrites are composed of the gamma-solid solution containing gamma' and the metastable phase precipitates which are enriched by Mo. These metastable phases are the ordered [alpha Mo-(ordered)], Ni3Mo and ordered [Ni3Mo(ordered)]
关键词	directional-eutectoid laser rapid melting solidification microstructure metastable phase
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:000266627900003
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/99399
专题	中国科学院金属研究所
通讯作者	Jin Tao
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jin Tao,Sun Xiaofeng,Zhao Nairen,et al. STUDY OF MICROSTRUCTURES IN gamma/gamma '-alpha Mo DIRECTIONAL EUTECTOID ALLOY INDUCED BY LASER RAPID MELTING SOLIDIFICATION[J]. ACTA METALLURGICA SINICA,2009,45(5):527-535.
APA	Jin Tao,Sun Xiaofeng,Zhao Nairen,Liu Jinlai,Zhang Jinghua,&Hu Zhuangqi.(2009).STUDY OF MICROSTRUCTURES IN gamma/gamma '-alpha Mo DIRECTIONAL EUTECTOID ALLOY INDUCED BY LASER RAPID MELTING SOLIDIFICATION.ACTA METALLURGICA SINICA,45(5),527-535.
MLA	Jin Tao,et al."STUDY OF MICROSTRUCTURES IN gamma/gamma '-alpha Mo DIRECTIONAL EUTECTOID ALLOY INDUCED BY LASER RAPID MELTING SOLIDIFICATION".ACTA METALLURGICA SINICA 45.5(2009):527-535.