Comparative Creep Properties of Single-Phase Intermetallics of the Ti-Al System


Creep characteristics of polycrystalline single-phase intermetallics, α2-Ti3Al and γ-TiAl, at 1100 K have been summarized to evaluate their relative strength at elevated temperature at three strain-rate levels, 10−1 10−4 and 10−8s−1, and are compared with those of α Ti-AI terminal solid solution alloys. The strength of these intermetallics is obviously higher than that of α, random solid solutions, especially at low strain-rates. However, the difference in high-temperature long-term strength among inter-metallic alloys is not significant at any strain-rate level.

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The work was supported in part by a Grant-in-Aid of the Ministry of Education (Grant No.04239105) and by Light Metals Educational Foundation, Incorp.

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Maruyama, K., Oikawa, H. Comparative Creep Properties of Single-Phase Intermetallics of the Ti-Al System. MRS Online Proceedings Library 288, 653–658 (1992).

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