TY - GEN
T1 - Image-based mechanism explanation of creep-fatigue fracture of alloy 617 at high temperature
AU - Tahir, F.
AU - Liu, Y.
N1 - Publisher Copyright:
© 2017 ICF 2017 - 14th International Conference on Fracture. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Creep-fatigue damage in Alloy 617 was investigated through novel hybrid-control tests at 950C with force-controlled dwell periods at intermediate stress levels. An image-based analysis of cracks and voids in failed specimens was performed to distinguish between creep-dominated and fatigue-dominated failure. It was demonstrated that traditional creep-fatigue tests with strain-controlled dwell periods are not capable of producing creep-dominated failure. Moreover, it is shown that the classical time fraction rule for calculating creep damage that is suggested in ASME draft code case for Alloy 617 is not a valid indicator of creep damage.
AB - Creep-fatigue damage in Alloy 617 was investigated through novel hybrid-control tests at 950C with force-controlled dwell periods at intermediate stress levels. An image-based analysis of cracks and voids in failed specimens was performed to distinguish between creep-dominated and fatigue-dominated failure. It was demonstrated that traditional creep-fatigue tests with strain-controlled dwell periods are not capable of producing creep-dominated failure. Moreover, it is shown that the classical time fraction rule for calculating creep damage that is suggested in ASME draft code case for Alloy 617 is not a valid indicator of creep damage.
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M3 - Conference contribution
AN - SCOPUS:85065989010
T3 - ICF 2017 - 14th International Conference on Fracture
SP - 451
EP - 452
BT - ICF 2017 - 14th International Conference on Fracture
A2 - Gdoutos, Emmanuel E.
PB - International Conference on Fracture
T2 - 14th International Conference on Fracture, ICF 2017
Y2 - 18 June 2017 through 20 June 2017
ER -