Amorphization of nanolaminates during severe plastic deformation: Molecular simulations in the Cu-Zr system

TitleAmorphization of nanolaminates during severe plastic deformation: Molecular simulations in the Cu-Zr system
Publication TypeBook Chapter
Year of Publication2003
AuthorsLund, AC, Schuh, CA
EditorBahr, DF, Kung, H, Moody, NR, Wahl, KJ
Book TitleMechanical Properties Derived from Nanostructuring Materials
Volume778
Pagination9 - 14
Abstract

Mechanical alloying techniques, which use plastic deformation to effect structural changes, are commonly used to prepare nanostructured metals with exemplary mechanical properties. When these nanostructured metals are subjected to further straining fully amorphous alloys can result, but there is little understanding of the atomic-scale mechanisms behind this amorphization. In the present work, we explore the final stages of such a mechanical alloying process via molecular simulations. Initial Cu-Zr nanolaminates are sequentially strained and consolidated, and the amorphization process is followed explicitly. The results are in qualitative agreement with existing experimental data, and provide insight into experimentally inaccessible features of the structural evolution.