ZrO2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy

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	ZrO2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy
	L. Y. Sheng; J. T. Guo; T. F. Xi; B. C. Zhang; H. Q. Ye
	2012
发表期刊	Progress in Natural Science-Materials International
ISSN	1002-0071
卷号	22 期号:3 页码:231-236
摘要	The ZrO2 ceramic particles strengthened NiAl/Cr(Mo,Hf) composite was fabricated from the rapidly solidified NiAl/Cr(Mo,Hf) pre-alloyed powder and the ZrO2 powder by powder metallurgy technique. Microstructure examination revealed that in the prepared composite NiAl and Cr(Mo) phases distributed at the eutectic cell boundary become coarse but many Cr(Mo) platelets inside the eutectic cell were broken, which was different from the original powder. Moreover, fine Ni2AlHf and Hf solid solution particles distributed uniformly in the composite, and the ZrO2 particles mainly segregated along eutectic cell boundary. In addition, twin crystal and stacking faults were observed inside of ZrO2 grains. The experimental results showed that the ZrO2 ceramic particles strengthened NiAl/Cr(Mo,Hf) composite exhibited better room temperature and high temperature mechanical properties than the NiAl/Cr(Mo,Hf) alloy, which may be attributed to the fine structure and the strengthening effect of ZrO2 particles. (C) 2012. Chinese Materials Research Society. Production and hosting by Elsevier Ltd. All rights reserved.
部门归属	[sheng, l. y.; xi, t. f.] pku hkust shenzhen hong kong inst, shenzhen 518057, peoples r china. [sheng, l. y.; xi, t. f.] peking univ, coll engn, beijing 100871, peoples r china. [guo, j. t.; zhang, b. c.; ye, h. q.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;sheng, ly (reprint author), pku hkust shenzhen hong kong inst, shenzhen 518057, peoples r china.;lysheng@yeah.net
关键词	Nial Intermetallics Nial/cr(Mo) Composite Powder Metallurgy Zro2 Strengthening Temperature Compressive Properties Mechanical-properties Eutectic Alloy Microstructure Behavior Nial-cr(Mo)-hf
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60217
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Y. Sheng,J. T. Guo,T. F. Xi,et al. ZrO2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy[J]. Progress in Natural Science-Materials International,2012,22(3):231-236.
APA	L. Y. Sheng,J. T. Guo,T. F. Xi,B. C. Zhang,&H. Q. Ye.(2012).ZrO2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy.Progress in Natural Science-Materials International,22(3),231-236.
MLA	L. Y. Sheng,et al."ZrO2 strengthened NiAl/Cr(Mo,Hf) composite fabricated by powder metallurgy".Progress in Natural Science-Materials International 22.3(2012):231-236.