Microstructure and mechanical properties of mechanically synthesed NiAl/HfB2 composite

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	Microstructure and mechanical properties of mechanically synthesed NiAl/HfB2 composite
	Yang, FB ; Guo, JT ; Zhou, JY
通讯作者	Guo, JT()
	2001-05-18
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	37 期号:5 页码:483-487
摘要	Mixed elematal powders of Ni, Al, Hf and B were ballmilled to reaction synthesize NiAl/HfB2 composite. The formation mechanism can be attributed to self propogating reaction induced by mechanical collision. The microstructure and compressive properties of densified bulk prepared by hot pressing and isostatically pressing have been investigated. The results show that the fine HfB2 reinforcing particles formed by in situ mode distributed mainly in matrix. The yield strength of NiAl/HfB2 composite is much stronger than that of NiAl, furthermore, it also possess good compressive ductility at low temperature. The yield strength of NiAl/HfB2 composite at high temperature is dependent on strain rate. The stress exponent n as well as activity energy Q calculated by standard power law are much higher than NiAl and similar to NiAl composite with a higher volume fraction of TiB2 dispersoids.
关键词	mechanical alloying NiAl composite 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:000172766700008
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/113078
专题	中国科学院金属研究所
通讯作者	Guo, JT
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Dalian Univ Technol, Dept Mat, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Yang, FB,Guo, JT,Zhou, JY. Microstructure and mechanical properties of mechanically synthesed NiAl/HfB2 composite[J]. ACTA METALLURGICA SINICA,2001,37(5):483-487.
APA	Yang, FB,Guo, JT,&Zhou, JY.(2001).Microstructure and mechanical properties of mechanically synthesed NiAl/HfB2 composite.ACTA METALLURGICA SINICA,37(5),483-487.
MLA	Yang, FB,et al."Microstructure and mechanical properties of mechanically synthesed NiAl/HfB2 composite".ACTA METALLURGICA SINICA 37.5(2001):483-487.