Development of Rod Shape TiAl Intermetallics by Mechanical Alloying Followed by Pulse Discharge Sintering Method
1999; Japan Institute of Metals; Volume: 40; Issue: 9 Linguagem: Inglês
10.2320/matertrans1989.40.957
ISSN2432-471X
AutoresZhiqiang Shan, Zhili Sun, Hitoshi Hashimoto, Y. H. Park, Toshihiko Abe,
Tópico(s)MXene and MAX Phase Materials
ResumoRod shape intermetallic TiAl is developed by the method of mechanical alloying (MA) followed by pulse discharge sintering (PDS) process for the potential application in the automotive valves. Sintering of powder element mixture, instead of mechanically alloyed powder, was employed for the manufacturing of rod shape TiAl for comparison. The sintered TiAl rods were found to be homogeneous both in density and in microstructure in the axis direction. The effects of alloys’ composition and sintering time on the microstructure and mechanical properties were also investigated. This work indicated that rod shape TiAl alloys with thin cross section could be successfully sintered with this process in which uniaxial pressure was applied. The fracture strength of TiAl alloys made by MA-PDS method was found to be much higher than that of sintered elemental compact.
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