The glass transition diagram in model metallic glasses

TL;DR

This paper introduces a three-dimensional phase diagram for metallic glasses, showing how strain rate, temperature, and stress influence the glass transition, with implications for understanding their fundamental behavior.

Contribution

It presents the first model of a glass transition phase diagram in metallic glasses incorporating strain rate, temperature, and stress as key parameters.

Findings

Critical strain rate induces glass transition at room temperature.

Observation time is a key parameter for glass transition.

A 3D phase diagram for metallic glasses is established.

Abstract

We report a strain rate (equivalent to experimental observation time) induced glass transition in model SrCaYbMg(Li)Zn(Cu) metallic glasses at room temperature. A critical strain rate, equivalent to glass transition temperature, is found for the strain rate induced a glassy state to liquid-like viscoplastic state translation. The results show that the observation time, equivalent to temperature and stress, is a key parameter for the glass transition. A three-dimension glass transition phase diagram involved in time, temperature and stress in metallic glasses is established for understanding the nature of the metallic glasses.