Revisited storage and dynamic recovery of dislocation density evolution law : toward a generalized Kocks--Mecking model of strain -hardening

TL;DR

This paper enhances the Kocks-Mecking model of strain-hardening by introducing a more realistic dislocation density law and a revised understanding of dynamic recovery, without adding new parameters.

Contribution

It provides a generalized model of strain-hardening with improved physical accuracy and simplicity, maintaining only one internal variable.

Findings

A new dislocation density law improves strain-hardening predictions.

Revised dynamic recovery understanding enhances model realism.

No additional material parameters are introduced.

Abstract

The current work extends the well established approach of Kocks and Mecking by a more realistic description of strain-hardening using an original dislocation density law with a revisited physical understanding of dynamic recovery, without new material parameters and keeping only one internal variable.