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Load Relaxation Behavior of Metastable Austenitic Stainless Steels at Quasi‐Static Strain Rates
Author(s) -
Isakov Matti,
Kuokkala VeliTapani,
Ruoppa Raimo
Publication year - 2011
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201000195
Subject(s) - materials science , strain rate , metastability , strain (injury) , dynamic strain aging , austenite , austenitic stainless steel , deformation (meteorology) , relaxation (psychology) , metallurgy , sensitivity (control systems) , composite material , microstructure , corrosion , electronic engineering , medicine , psychology , social psychology , physics , quantum mechanics , engineering
Instantaneous strain rate sensitivity of metastable austenitic stainless steel EN 1.4318 was studied at quasi‐static strain rates (2 × 10 −4 ... 10 −1 s −1 ) using load relaxation tests carried out at room temperature. The results indicate that at the studied deformation conditions the instantaneous strain rate sensitivity of the test material decreases with decreasing strain rate but increases with increasing plastic strain. Rapid strain aging was also observed to occur at the studied deformation conditions.