Body-centered phase of shock loaded Cu

TL;DR

This paper uses molecular dynamics simulations to identify new body-centered phases of shock-loaded copper, suggesting a need to revise the phase diagram of copper under high temperature and pressure.

Contribution

It introduces new phases of copper under shock loading through detailed analysis, expanding understanding of copper's high-pressure behavior.

Findings

Identification of new body-centered phases of Cu

Radial distribution function and X-ray diffraction analysis

Implication for re-evaluating Cu phase diagram

Abstract

Single crystal Cu when shock loaded in certain direction for a certain narrow range of piston velocities undergoes a structural phase transition from face-centered cubic to different body-centered phases. Based on molecular dynamic simulations, the manuscript identifies new phases of Cu through detailed radial distribution function and x-ray diffraction analysis. Identification of the new phases of Cu should initiate a re-evaluation of phase diagram for Cu under high temperature and pressure conditions.