Verification of Inter-Granular Interaction in Deformation Models by Residual Stress Measurements

Abstract

Deformation models are used for predictions of deformation characteristics, crystallographic textures and for interpretation of residual stress measurements. A basic element of any model is a law defining the interaction between a grain and a surrounding material. The level of interaction is very different in various models. The aim of the present work is to find the value of interaction parameter in a given material, using residual stress measurements. The estimation has been done for highly rolled steel via examination of the second order stress. In particular the “snake type” behaviour (in ϵ₃₃ vs. sin²Ψ plot) was useful in this study.

Keywords

Deformation models Residual stress Second order stress Crystallographic texture Diffraction method Fitting procedure

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