SYMPOSIA PAPER Published: 01 January 2000
STP13509S

The Application of a Biaxial Isothermal Fatigue Model to Thermomechanical Loading for Austenitic Stainless Steel

Source

A biaxial thermomechanical fatigue (TMF) model has been developed by extending a biaxial fatigue model for isothermal condition. The proposed model assesses the in-phase and out-of-phase type cycle incorporating the effect of oxidation and creep. The isothermal fatigue model utilizes the concept of triaxiality factor (TF), which accounts for the state of stress effect on the material's fracture ductility. The TMF biaxial strain ratios varied from 0 to 3.65 at cyclic temperatures of 399 to 621 °C (750 to 1150°F). All tests were strain controlled using tubular specimens. Heating was by induction and the cooling was by natural convection.

Author Information

Zamrik, SY
Pennsylvania State University, University Park, PA
Renauld, ML
United Technology Research Center, (Pratt & Whitney), East Hartford, CT
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Details
Developed by Committee: E08
Pages: 266–280
DOI: 10.1520/STP13509S
ISBN-EB: 978-0-8031-5435-3
ISBN-13: 978-0-8031-2865-1