EFFECTS OF HIP AND HEAT TREATMENT ON MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OF RAPIDLY SOLIDIFIED NiAl-Cr(Mo)-Hf EUTECTIC ALLOY

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	EFFECTS OF HIP AND HEAT TREATMENT ON MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OF RAPIDLY SOLIDIFIED NiAl-Cr(Mo)-Hf EUTECTIC ALLOY
	Sheng Liyuan; Guo Jianting; Zhang Wei; Xie Yi; Zhou Lanzhang; Ye Hengqiang
通讯作者	Guo Jianting(jtguo@imr.ac.cn)
	2009-09-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	45 期号:9 页码:1025-1029
摘要	The NiAl-Cr(Mo) eutectic alloy has better fracture toughness and high temperature strength among NiAl alloys. Hf addition can raise the high temperature strength of NiAl-Cr(Mo) eutectic alloy further, but decreases its room temperature compressive properties obviously; which is caused by the microsegregation of Heusler phases. The NiAl-Cr(Mo)-0.5Hf alloy was rapidly solidified and then hot isostatic pressed (HIP) or high temperature treated (HTT) in order to improve the structure and property of this eutectic alloy. The results reveal that rapid solidification can well refine the microstructure of eutectic alloy and keep more amount of Hf solid solution phase in the alloy. Simultaneously, the shapes and distributions of the Heusler (Ni(2)AlHf) phases and Hf solid solution phases are well improved. After the HIP treatment, more Heusler phases are transformed into Hf solid solution phases, and the distributions of Heusler phases and Hf solid solution phases become homogeneous, and moreover the primary NiAl phases become coarsening obviously. After HTT, the amount of primary NiAl phases decreases a little, the Heusler phases and Hf solid solution phases become finer. The rapid solidification improves the room temperature compressive properties of the alloy significantly, the HIP and HTT improve its high temperature compressive properties further.
关键词	NiAl-Cr(Mo)-Hf eutectic alloy rapid solidification hot isostatic pressing (HIP) microstructure mechanical property
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:000271663400001
出版者	SCIENCE PRESS
引用统计	被引频次：12[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/321006/98696
专题	中国科学院金属研究所
通讯作者	Guo Jianting
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sheng Liyuan,Guo Jianting,Zhang Wei,et al. EFFECTS OF HIP AND HEAT TREATMENT ON MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OF RAPIDLY SOLIDIFIED NiAl-Cr(Mo)-Hf EUTECTIC ALLOY[J]. ACTA METALLURGICA SINICA,2009,45(9):1025-1029.
APA	Sheng Liyuan,Guo Jianting,Zhang Wei,Xie Yi,Zhou Lanzhang,&Ye Hengqiang.(2009).EFFECTS OF HIP AND HEAT TREATMENT ON MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OF RAPIDLY SOLIDIFIED NiAl-Cr(Mo)-Hf EUTECTIC ALLOY.ACTA METALLURGICA SINICA,45(9),1025-1029.
MLA	Sheng Liyuan,et al."EFFECTS OF HIP AND HEAT TREATMENT ON MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OF RAPIDLY SOLIDIFIED NiAl-Cr(Mo)-Hf EUTECTIC ALLOY".ACTA METALLURGICA SINICA 45.9(2009):1025-1029.