Constitutive modeling of dynamic strain aging in commercially pure bcc metals

This paper explores the challenge of accurately modeling Dynamic Strain Aging (DSA) in metals using numerical models. The proposed modification to the Voyiadjis–Abed (VA) model addresses the limitations of current models by introducing an additional microstructures-based parameter to capture the effect of DSA. The modified VA model considers the impurity-dislocation interactions based on the concentration and diffusion kinetics of impurity atoms. Results show successful DSA capture in commercially pure Niobium and Vanadium using physical and microstructural parameters. This study provides a promising approach for accurately modeling DSA activation in bcc metals, enabling future research.