Microstructure and Mechanical Properties Determined in Compressive Tests of Quasi-Rapidly Solidified NiAl-Cr(Mo)-Hf Eutectic Alloy After Hot Isostatic Pressure and High Temperature Treatments

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	Microstructure and Mechanical Properties Determined in Compressive Tests of Quasi-Rapidly Solidified NiAl-Cr(Mo)-Hf Eutectic Alloy After Hot Isostatic Pressure and High Temperature Treatments
	L. Y. Sheng; L. Nan; W. Zhang; J. T. Guo; H. Q. Ye
	2010
发表期刊	Journal of Materials Engineering and Performance
ISSN	1059-9495
卷号	19 期号:5 页码:732-736
摘要	The effect of high cooling rate of approximately 10(2) K/s and subsequent hot isostatic pressure (HIP) and high temperature (HT) treatment on the microstructure and mechanical properties of NiAl-based inter-metallic alloys was investigated. The results reveal that rapid solidification refines the microstructure of the NiAl-Cr(Mo)-0.5Hf eutectic alloy and transforms the Ni(2)AlHf Heusler phase, which is present in the equilibrium state to a metastable Hf(Ni, Al, Cr) solid solution phase. Simultaneously, the shape and distribution of the Hf(Ni, Al, Cr) solid solution phase were considerably improved. After the HIP treatment, the Hf(Ni, Al, Cr) solid solution phase has changed from continuous distribution along eutectic cell boundaries into semicontinuous distribution, and the primary NiAl(Cr, Mo) phase has coarsened. The HT treatment reduces the volume fraction of the primary NiAl(Cr, Mo) phase and optimizes the distribution of the Hf(Ni, Al, Cr) solid solution phase. Rapid solidification and the resulting fine-grained microstructure will significantly improve the mechanical properties of the alloy in compression tests. However, additional HIP and HT treatments enhance the high-temperature strength properties obviously.
部门归属	[sheng, l. y.] guangzhou & chinese acad sci, ind technol inst, guangzhou 511458, guangdong, peoples r china. [sheng, l. y.; nan, l.; zhang, w.; guo, j. t.; ye, h. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;sheng, ly (reprint author), guangzhou & chinese acad sci, ind technol inst, guangzhou 511458, guangdong, peoples r china;lysheng@ymail.com
关键词	Mechanical Property Microstructure Nial-cr(Mo)-hf Eutectic Alloy Rapid Solidification Magnetic-field Treatment Cr
URL	查看原文
WOS记录号	WOS:000280240900019
引用统计	被引频次：18[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/321006/31434
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Y. Sheng,L. Nan,W. Zhang,et al. Microstructure and Mechanical Properties Determined in Compressive Tests of Quasi-Rapidly Solidified NiAl-Cr(Mo)-Hf Eutectic Alloy After Hot Isostatic Pressure and High Temperature Treatments[J]. Journal of Materials Engineering and Performance,2010,19(5):732-736.
APA	L. Y. Sheng,L. Nan,W. Zhang,J. T. Guo,&H. Q. Ye.(2010).Microstructure and Mechanical Properties Determined in Compressive Tests of Quasi-Rapidly Solidified NiAl-Cr(Mo)-Hf Eutectic Alloy After Hot Isostatic Pressure and High Temperature Treatments.Journal of Materials Engineering and Performance,19(5),732-736.
MLA	L. Y. Sheng,et al."Microstructure and Mechanical Properties Determined in Compressive Tests of Quasi-Rapidly Solidified NiAl-Cr(Mo)-Hf Eutectic Alloy After Hot Isostatic Pressure and High Temperature Treatments".Journal of Materials Engineering and Performance 19.5(2010):732-736.