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The constitutive behaviour of a Nb‐V HSLA steel in the temperature range of 900 to 975 °C
Author(s) -
Wang Fengyin,
Lenard John Gustav
Publication year - 1991
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199101252
Subject(s) - isothermal process , arrhenius equation , constitutive equation , thermodynamics , atmospheric temperature range , materials science , deformation (meteorology) , strain (injury) , flow stress , strain rate , metallurgy , composite material , chemistry , physics , activation energy , finite element method , medicine
Isothermal true‐stress true‐strain flow curves of a Nb‐V HSLA steel (0.13% C‐1.55% Mn‐0.028% Nb‐0.059% V) are presented in this paper. Constitutive relations, valid at temperatures from 900 to 975 °C and at rates of strain from 0.005 to 5 s −1 , are derived. It is found that an Arrhenius‐type equation, with a digital data bank storing its constants for different levels of normalized strains, represents the material's resistance to deformation adequately.