Mechanical Behavior of Aged Ti-15V-3Cr-3Sn-3Al Alloy

Ying Kai Chou; Leu Wen Tsay; Ying Chiao Wang; Chun Chen

doi:10.4028/www.scientific.net/AMM.378.82

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 378Mechanical Behavior of Aged Ti-15V-3Cr-3Sn-3Al...

Mechanical Behavior of Aged Ti-15V-3Cr-3Sn-3Al Alloy

Abstract:

The effect of aging treatments on the mechanical behavior of Ti-15V-3Cr-3Sn-3Al (Ti153) alloy was evaluated in the present study. Properties of the two-step aged specimens were also compared with those of the one-step aged specimens. The second aging treatment, which was performed at 426^o°C for 24 h, apparently raised the tensile strength at the expense of the notched tensile strength for the specimens previously aged at 426°C or below. On the other hand, the second-step aging had a minor effect on further hardening of the specimens prior to aging at 538°C and 593°C. In general, the J-integral value (fracture toughness) had the same trend as that of the notch brittleness of the specimens. Overall, the specimens subjected to the two-step aging treatment did not show any advantage over the specimens subject to one-step aging treatment.