STUDY ON HOT CORROSION RESISTANCE OF A NEW DIRECTIONAL SOLIDIFICATION Ni-BASED SUPERALLOY

CORC > 金属研究所 > 中国科学院金属研究所

	STUDY ON HOT CORROSION RESISTANCE OF A NEW DIRECTIONAL SOLIDIFICATION Ni-BASED SUPERALLOY
	Ning Likui 1,2; Zheng Zhi 2; Tan Yi 1; Liu Enze 2; Tong Jian 2; Yu Yongsi 1; Wang Hua 3
刊名	ACTA METALLURGICA SINICA
	2009-02-11
卷号	45 期号:2 页码:161-166
关键词	DZ68 hot corrosion superalloy
ISSN号	0412-1961
通讯作者	Zheng Zhi(zhcngzhi@imr.ac.cn)
英文摘要	The hot corrosion resistance of a new directional solidification (DS) Ni-based super-alloy DZ68 was studied and compared with K438 alloy. The results indicate that the microstructure of DZ68 alloy is more uniform than K438 alloy after heat treatment. There are small size carbides in the microstructure of DZ68 alloy after heat treatment, but there are big size carbides and a lot (gamma + gamma') eutectic in the microstructure of K438 alloy. The hot corrosion of DZ68 alloy is uniform, and the corrosion products are mainly (Ni, Co)Cr(2)O(4) and Al(2)O(3), More (Ni, Co)Cr(2)O(4) exists in outer corrosion layer and more Al(2)O(3) exists in inner corrosion layer. For the K438 alloy the hot corrosion is not uniform, NiO is the mainly corrosion product in outer corrosion layer and CrS is the main corrosion product in inner corrosion layer, Moreover, the segregation of Ti can induce segregation of other elements in the two alloys, which leads to a severe local corrosion of alloys. Under the same experimental condition, the corrosion resistance of DZ68 alloy is a little better than that of K438 alloy.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000264304600006
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/98934]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zheng Zhi
作者单位	1.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.AVIC Xian Aeroengine Grp Ltd, Xian 710021, Peoples R China
推荐引用方式 GB/T 7714	Ning Likui,Zheng Zhi,Tan Yi,et al. STUDY ON HOT CORROSION RESISTANCE OF A NEW DIRECTIONAL SOLIDIFICATION Ni-BASED SUPERALLOY[J]. ACTA METALLURGICA SINICA,2009,45(2):161-166.
APA	Ning Likui.,Zheng Zhi.,Tan Yi.,Liu Enze.,Tong Jian.,...&Wang Hua.(2009).STUDY ON HOT CORROSION RESISTANCE OF A NEW DIRECTIONAL SOLIDIFICATION Ni-BASED SUPERALLOY.ACTA METALLURGICA SINICA,45(2),161-166.
MLA	Ning Likui,et al."STUDY ON HOT CORROSION RESISTANCE OF A NEW DIRECTIONAL SOLIDIFICATION Ni-BASED SUPERALLOY".ACTA METALLURGICA SINICA 45.2(2009):161-166.