SYNTHESIS AND CHARACTERISTICS OF NANO BULK

Fe3Al INTERMETALLLIC ALLOY

Li Jia

(College of Materials Science and Engineering, Jinan University, Jinan 250022)

Yin Yansheng

(School of Materials Science and Engineering, China Ocean University, Qingdao 266003)

Hao Chuncheng

(College of Materials and Environmental Science, Qingdao University of Science and Technology, Qingdao 266001)

Abstract: Fe3Al nano-powder were synthesized by hydrogen arc plasma method and mechanical alloying (MA), respectively. The Fe3Al power prepared by hydrogen arc plasma method had B2 structure, with gain size of 50～100 nm and sphericity appearance. Compared with the Fe3Al power prepared by MA had higher concentration of defect and crystal lattice distortion than the power gained by hydrogen arc plasma method. The hardness (HRC), room bending strength and fracture toughness of hot-pressed sintered bulk Fe3Al are 61, 1 300 MPa and 49 MPam· 1/2, respectively.

Key words: Nanon  Intermetallic  HP sintering

CLC No: TG156

教育部博士点基金(20020422001)及山东省重点基金(Z2002F02)资助项目. Received 20040421, received in revised form 20040924