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《Journal of Materials Engineering》 2002-03
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Synthesis Mechanical Property of NiAl(Co)-TiC Nano-Composite

LI Bo (Science college, Northeastern University, Shenyang 11004 ,Chian) XIA Dong sheng (Dalian Maritime University, Dalian 116000,China) GUO Jian ting, Li Gu song (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China)  
Ni, Al, Co, Ti and C was mixed with Ni 50 Al 45 Co 5+10%TiC and Ni 50 Al 45 Co 5+20%TiC ratio and processed with mechanical alloying in high energy balling After the nano composite powder was treated by hot pressing (HP) and hot isostatically pressing (HIP), the bulk nano composite with the gain from 100~350nm and embedded TiC nano paritcles from 80~250nm was obtained At room temperature, the yield strength and compressibility was 1394~1660MPa and 12%~13%, respectively The surface of NiAl(Co) 20TiC nano composite with 30% compressibility was smooth without crack in 700℃ In 1100℃, the yield strength of bulk nano material was 136MPa, which was 4 times than that of the cast NiAl