Abstract
It is suggested that strain aging is one of the important factors for deriving the inelastic constitutive equation of metal materials used in structure. To investigate the effect of aging on the flow stress level in plastic deformation, under uniaxial loading using SUS316 stainless steel, which is a typical metal used in structure, and A7075-T6 aluminum-alloy, which shows a strong strain aging, the authors analyzed the intensity of temporary hardening after stress relaxation and calculated the behavior. The intensity behaves as a function of prestraining history, and calculated results agree with experimental responses.
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