Creep-fatigue lives of nickel-based Alloy 617 and Alloy 740H were investigated to evaluate their applicability to advanced ultrasupercritical (A-USC) power plants. Strain controlled push-pull creep-fatigue tests were performed using solid bar specimen under triangular and trapezoidal waveforms at 700°C. The number of cycles to failure was experimentally obtained for both alloys and the applicability of three representative life prediction methods was studied.

advanced ultrasupercritical power plants, creep damage evaluation, creep-fatigue life, nickel-chromium-cobalt-molybdenum alloys, precipitation hardenable nickel superalloys, push-pull creep-fatigue test
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2016
ASM International
Topics
Creep deformation Creep testing Fatigue testing Superalloys Nickel-chromium alloys Fatigue life testing
Issue Section:
Nickel-Based Alloys