High Temperature Creep of Alpha-2 Ti-34mo1%Al Polycrystals
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AbstractConstant-stress compressive creep tests were carried out on an Al-rich a2 single-phase material, which had equiaxed-grains of 60μim in grain size, at 1050∼1250 K under 100∼500MPa. The type of the primary creep stage and the microstructures developed during creep depend greatly on the creep condition. The minimum creep-rate, however, can be represented by one set of parameters over the whole range of experimental condition. The stress exponent is 5.0±0.2 and the (modulus-compensated) activation energy is 360 ± 10kJ/mol. The Dorn-type plot of the minimum creep rate reveals that the normalized creep strength of fine-grained Ti-34mol%Al is not greatly different from that of disordered solid-solution hardened alloys.
1978 ◽
Vol 100
(4)
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pp. 363-370
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2016 ◽
Vol 853
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pp. 163-167
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2014 ◽
Vol 45
(11)
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pp. 5076-5084
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2011 ◽
Vol 465
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pp. 443-446
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2003 ◽
Vol 49
(12)
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pp. 1145-1150
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