Journal of the Japan Society of Powder and Powder Metallurgy
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
Structure and High Temperature Bending Strength of TiAl Intermetallic Compound Synthesized by Vacuum Pseudo-HIP
Kohei TaguchiMichihiko AyadaHideo Shingu
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JOURNAL OPEN ACCESS

1993 Volume 40 Issue 5 Pages 501-505

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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.
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