ISSN: 0090-3973
Page Count: 3

Characteristics of Macrodeformation Behavior of the Cycling Failure Specimens of a Fe-Cr-Ni Alloy Under In-phase and Out-of-phase Thermomechanical Fatigue

Qian, Y
Northern Jiaotong University,

(Received 19 February 2003; accepted 16 December 2003)

Abstract

Characteristics of macrodeformation behavior of the cycling failure specimens of a Fe-Ni-Cr alloy were studied under in-phase and out-of-phase synchronization of thermal cycling with mechanical cycling. Varied hysteresis loops characterize different cycling hardening behavior under in-phase and out-of-phase thermomechanical fatigue (TMF). Out-of-phase caused stronger hardening and severe asymmetry of cycling stress leading to a shorter failure life. Meanwhile thermomechanical cycling weakening hardening behavior occurred in the higher temperature region in each cycling. Asymmetry of the configuration change of the specimen is evident under Out-of-phase.

Keywords:
thermo-mechanical superposition, cycling stress asymmetry, In-phase, Out-of-phase

Paper ID: JTE11898
DOI: 10.1520/JTE11898
ASTM International is a member of CrossRef.