SYMPOSIA PAPER Published: 01 January 1992

Thermo-Mechanical Fatigue Life Prediction Methods


Synergistic effects of oxidation on high temperature isothermal and thermo-mechanical fatigue behavior are studied. Experiments were conducted under different strain-temperature variations and atmospheres to reveal the varying severities of oxide induced failure. Conditions conducive to intergranular creep damage under thermo-mechanical fatigue are identified, and the competing damage mechanisms are classified for steels, Ni-based superalloys, and Al alloys. Requirements and a solution procedure are outlined for a thermo-mechanical fatigue life prediction model which is then applied to 1070 steel, MarM-247 nickel-based superalloy, and A12xxx-T4 aluminum alloy.

Author Information

Sehitoglu, H
Mechanics and Materials Program, National Science Foundation, Washington, DC
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Developed by Committee: E08
Pages: 47–76
DOI: 10.1520/STP24152S
ISBN-EB: 978-0-8031-5185-7
ISBN-13: 978-0-8031-1423-4