Abstract
A pseudo-HIP (PHIP) process has been applied for the reactive synthesis of near-net shape Ti-Al intermetalic compound materials. Ti-Al compound specimens of full density with composition range Ti-46 to 52at%Al were obtained after PHIP treatment at 1373K to 1623K. The high temperature bending strength of the Ti-48at%Al increased by increasing PHIP temperature. After PHIP treatment at 1623K the volume percent of lamellar structure increased by increasing the Ti content and a full lamellar structure of The Ti-46at%Al gave the highest strength. A structure of matrix gamma and small lamellar grains that was obtained in the range of Al rich composition had high yield strength at high temperature.