ISSN: 1945-7553
Page Count: 3

Stress-Strain Behavior of a Fe-Ni-Cr Alloy During In-and Out-of-Phase Synchronized Thermal Cycling and Mechanical Cycling Tests

He, Q
Northern Jiaotong University, Beijing,

Bressers, J
Petten Establishment,

Fenske, E
Petten Establishment,

Decat, R
Petten Establishment,

(Received 17 October 1997; accepted 6 October 1998)

Abstract

The stress-strain behavior of a Fe-Ni-Cr alloy during in-phase and out-of-phase tests under conditions synchronizing thermal cycling with mechanical cycling has been studied by using a specially designed thermal cycling unit. The curves of cycling stress, strain, and temperature versus time indicate that the thermomechanical cycling softening phenomenon occurring in the higher-temperature region, close to the maximum thermal cycling temperature, is a common characteristic under thermomechanical cycling in-phase and out-of-phase superposition tests. However, a difference in behavior between in-phase and out-of-phase is evident. The tests show that the thermomechanical cycling softening occurred in the tensile strain range for in-phase testing and occurred in the compressive strain range for out-of-phase.

Keywords:
thermomechanical superposition, cycling softening, in-phase testing, out-of-phase testing

Paper ID: JTE12042J
DOI: 10.1520/JTE12042J
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