|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light Metals
||Synthesis and Densification of Large-sized TiAl Alloy Samples by Spark Plasma Sintering
||Yongjun Su, Deliang Zhang
|On-Site Speaker (Planned)
It has been well established that fully or nearly fully dense TiAl alloy samples with homogeneous microstructures can be obtained by spark plasma sintering (SPS) in a few minutes. However, the previous experrimental studies were only limited to fabricating small sized TiAl alloy samples, and no works on SPS of large-sized TiAl alloy samples have been seen. This talk presents and discusses our work on the synthesis and densification of large-size TiAl alloy samples. TiAl alloy powder with the composition of Ti-48Al-2Cr-2Nb was consolidated by SPS at different temperatures and different holding times. Finally, a densified TiAl alloy with a diameter of 60 mm was fabricated at 1300 °C for 30 min by SPS. The microstructures and mechanical properties of the samples were studied by conducting scanning electron microscopy and tensile testing at room temperature. It was confirmed that large sized sample had a homogeneous microstructure and good tensile ductility.
||Planned: EPD Congress Volume