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MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OF NiAl-TiB_2 PARTICULATE COMPOSITES

XING Zhanping* , GUO Jianting , HU Zhuangqi , AN Geying*Institute of Metal Research , Chinese Academy of Sciences , Shenyang , China * Harbin Institute of Technology , Harbin , China

金属学报(英文版)

Ni-50at.%A1 matrix composites containing 0 to 20v.% TiB2 particles have been successfully fabricated by HPES technique. The results show that the Vickers hardness at room temperature and the compressive yield strength from room temperature to 1000℃ of the composites increase with increasing volume fraction of the strengthening phase. Especially, the yield strength of NiAl-20TiB2 was approximately twice as high as that of unreinforced NiAl. The ductility of the composites at room temperature is also superior to the monolithic NiAl.

关键词: intermetallic matrix composite , null , null , null , null

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