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Microstructure and mechanical properties of mechanically synthesed NiAl/HfB2 composite
Yang, FB; Guo, JT; Zhou, JY
Corresponding AuthorGuo, JT()
2001-05-18
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume37Issue:5Pages:483-487
AbstractMixed 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.
Keywordmechanical alloying NiAl composite mechanical property
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000172766700008
PublisherSCIENCE CHINA PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/113078
Collection中国科学院金属研究所
Corresponding AuthorGuo, JT
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Dalian Univ Technol, Dept Mat, Dalian 116024, Peoples R China
Recommended Citation
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.
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