Premium
STRESS RESPONSE UNDER THERMAL‐MECHANICAL STRAIN CYCLING FOR A 1 CrMoV FERRITIC STEEL AND TWO 316 STAINLESS STEELS
Author(s) -
Ellison E. G.,
AlZamily A.
Publication year - 1994
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1994.tb00771.x
Subject(s) - isothermal process , materials science , temperature cycling , metallurgy , stress (linguistics) , thermal , composite material , atmospheric temperature range , phase (matter) , strain (injury) , thermodynamics , medicine , linguistics , philosophy , physics , chemistry , organic chemistry
— Isothermal and thermal‐mechanical strain fatigue tests were conducted in air on representative service alloys; a 1 CrMoV steel, and two batches of 316 stainless steel. Data was obtained for thermal‐mechanical in‐phase and out‐of‐phase cycles, and also for isothermal tests at the maximum, minimum, and mid‐temperature of the thermal‐mechanical cycle. Dwell periods were also incorporated in the cycle to assess their effects. A comparative evaluation has been made on the basis of the materials' cyclic stress response. In general, the results have shown that the thermal‐mechanical strain cycling tests cause a large increase in stress range over those tested under isothermal conditions at maximum temperature. In addition, mean stress and strain offsets were developed in continuous cycle thermal‐mechanical tests, whereas negligible offsets occurred in isothermal tests. It appears that the response of the materials could not always simply be explained by reference to the temperature change itself.