Reactive milling and mechanical properties of NiAl composite with HfC dispersoids

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	Reactive milling and mechanical properties of NiAl composite with HfC dispersoids
	F. B. Yang; J. T. Guo; J. Y. Zhou
	2002
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	18 期号:1 页码:59-62
摘要	A NiAl-based composite with HfB2 dispersed particles has been synthesized by mechanical alloying of Ni, Al, Hf and C powders. The formation mechanism of NiAl-HfC during milling can be attributed to two chemical reactions: Ni+Al-->NiAl+DeltaH; Hf+C-->HfC+DeltaH, induced by mechanical collision in a certain period of time, which results in an abrupt exothemic reaction. Hot pressing (HP) and hot isostatic pressing (HIP) have been used to make the NiAl-10HfC compacts near fully dense. Compressive testing from room temperature to 1000degreesC indicated that the yield stress of NiAl-10HfC composite is 3similar to4 times higher than that of cast NiAl and correspond to the MA NiAl-10TiB(2) composite. In the meantime, yield strength at high temperature is dependent on strain rate, and deformation is controlled by diffusion mechanism.
部门归属	chinese acad sci, inst met res, shenyang 110016, peoples r china. dalian univ technol, dept mat, dalian 116024, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Nial Composite Hfc Dispersoids Mechanical Property Reactive Milling Micrstructure Alloying Elemental Powders Nanocomposite
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WOS记录号	WOS:000173663400019
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36484
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. B. Yang,J. T. Guo,J. Y. Zhou. Reactive milling and mechanical properties of NiAl composite with HfC dispersoids[J]. Journal of Materials Science & Technology,2002,18(1):59-62.
APA	F. B. Yang,J. T. Guo,&J. Y. Zhou.(2002).Reactive milling and mechanical properties of NiAl composite with HfC dispersoids.Journal of Materials Science & Technology,18(1),59-62.
MLA	F. B. Yang,et al."Reactive milling and mechanical properties of NiAl composite with HfC dispersoids".Journal of Materials Science & Technology 18.1(2002):59-62.