The dissolution of the vacancy gas in solids and high pressure phase transitions

TL;DR

This paper derives a formula for vacancy density in solids under pressure, linking vacancy behavior to phase transitions and mechanical properties in metals at high pressure.

Contribution

It introduces a new formula for vacancy density under pressure and connects vacancy dissolution to phase transitions and mechanical weakness in metals.

Findings

Vacancy density formula under pressure derived

Vacancy dissolution causes incommensurate phase structures

Vacancy behavior influences elastic and tensile properties

Abstract

The formula for the number density of vacancies in a solid under pressure is obtained. The mean number density of vacancies in a solid under stress or tension is also estimated. The dissolution of the vacancy gas in solids is shown to be responsible for the phases with composite incommensurate structures in metals under high pressure and also for the low values of the elastic limit and tensile strength of solids.