MECHANICAL PROPERTIES OF IN-SITU FeAl-TiB2 INTERMETALLIC MATRIX COMPOSITES
(0) Intermetallic matrix composites reinforced with ceramic particles have received a great deal of attention. Iron aluminide is known to be a good material for the matrix in such composites. Two processes were used to fabricate FeAl-TiB2 intermetallic matrix composites. One was liquid melt in-situ mixing, and the other was arc melting and suction casting processes. FeAl-TiB2 IMCs obtained by two different methods were investigated to elucidate the influence of TiB2 content. In both methods, the grain size in the FeAl alloy decreased with the presence of titanium diboride. The grain size of in-situ FeAl-TiB2 IMCs became smaller than that of arc FeAl-TiB2 IMCs. Significant increase in fracture stress and hardness was achieved in the composites. The in-situ process gives clean, contamination-free matrix/reinforcement interface which maintained good bonding causing high load bearing capability. This contributed to the increase in the mechanical properties of composites.
Liquid melt in-situ mizing process arc melting and suction casting intermetallic matriz composites iron aluminides mechanical properties
JONGHOON KIM BONGGYU PARK YONGHO PARK IKMIN PARK HEESOO LEE
Department of Material Science and Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan 609-735, Republic of Korea
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
1479-1484
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）