TiAl based alloys from the prealloyed powder of Ti-47.5Al-2.5V-1.0Cr were prepared by spark plasma sintering (SPS), and the relationship among sintering temperature, microstructure and mechanical properties was studied. The results showed that the TiAl based-alloy with high density and uniform microstructure could be obtained by SPS. In addition, the microstructure changed with sintering temperature, as a result, the mechanical properties changed with the microstructure. The finer the microstructure was, the higher the strength and ductility at room temperature became. For specimens sintered at 1100°C, the finer duplex microstructure was achieved. The specimens exhibited better compressive properties at room temperature with a compressive strength of 3321 MPa and a compression ratio of 35.2%.
|Number of pages||4|
|Journal||Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing|
|Publication status||Published - 2008 Mar 1|
- Mechanical properties
- Spark plasma sintering (SPS)
- TiAl based alloy
ASJC Scopus subject areas