ThermalMechanical Fatigue Performance of Powder Metallurgy Superalloy FGH95 and FGH96

ZHANG Guo-dong; HE Yu-huai; SU Bin

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Journal of Aeronautical Materials ›› 2011, Vol. 31 ›› Issue (6) : 96.

ThermalMechanical Fatigue Performance of Powder Metallurgy Superalloy FGH95 and FGH96

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Abstract

Inphase(IP)and Outofphase(OP) thermalmechanical fatigue(TMF) behavior of powder metallurgy (PM) superalloy FGH95 and FGH96 were studied with maximum and minimum temperature of 350℃and 600℃. Stressstrain loop, cyclic stress response and fatigue life of TMF in two kinds of superalloy were analyzed. Stressstrain loop of TMF showed the characteristic of tensioncompression symmetry and of low plasticity with high strength. Cyclic stress response depended on magnitude of stain. At the same strain amplitude, it is found that the TMF cyclic stress of FGH96 is lower than the TMF cyclic stress of FGH95 alloy, and the cyclic plasticity of FGH96 alloy is more better than the cyclic plasticity of FGH95 alloy. Consequently TMF performance of FGH96 alloy is better than TMF performance of FGH95 alloy.

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thermalmechanical / In-phase / Out-of-phase / stressstrain loop

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ZHANG Guo-dong, HE Yu-huai, SU Bin. ThermalMechanical Fatigue Performance of Powder Metallurgy Superalloy FGH95 and FGH96[J]. Journal of Aeronautical Materials, 2011, 31(6): 96

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