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Fatigue design curve under LCF as well as combined LCF and HCF regime at 923 K in a type 316LN stainless steel
Author(s) -
Sarkar Aritra,
Nagesha Atikukke
Publication year - 2019
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/ffe.13010
Subject(s) - low cycle fatigue , materials science , metallurgy , fatigue testing , austenite , strain (injury) , austenitic stainless steel , structural engineering , composite material , engineering , medicine , corrosion , microstructure
The paper presents a novel approach towards developing fatigue design curve under combined loading involving low cycle fatigue (LCF) and high cycle fatigue (HCF), in a type 316LN austenitic stainless steel. The total strain life curve used for fatigue design is modified taking into account the effect of varying load history. The methodology relies on the test data obtained to previous studies by authors pertaining to LCF‐HCF interaction using a sequential pattern at 923 K. Modified design curves are generated at 923 K where the effect of varying degree of prior LCF exposure at strain range of 0.12% is accounted for, on HCF.