Abstract
In the present study, the spark plasma sintering technique is used to densify pre-alloyed TiAl powders. Ti 49Al 47Cr 2Nb 2 and Ti 51Al 44Cr 2Nb 2B 1 powders are sintered at temperatures ranging between 1100 °C and 1250 °C to yield various microstructures. Two-phased (γ + α 2), duplex and lamellar microstructures are generated depending on the powder and the sintering temperature. Full compaction is achieved in a short period of time and the overall processing duration does not exceed 30 min. The resultant tensile properties at room temperature are very promising whereas a limited creep resistance was obtained at 700 °C
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