English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present molecular dynamics simulations of the homogeneous (mechanical)melting transition of a bcc metal, vanadium. We study both the nominallyperfect crystal as well as one that includes point defects. According to theBorn criterion, a solid cannot be expanded above a critical volume, at which a'rigidity catastrophe' occurs. This catastrophe is caused by the vanishing ofthe elastic shear modulus. We found that this critical volume is independent ofthe route by which it is reached whether by heating the crystal, or by addinginterstitials at a constant temperature which expand the lattice. Overall,these results are similar to what was found previously for an fcc metal,copper. The simulations establish a phase diagram of the mechanical meltingtemperature as a function of the concentration of interstitials. Our resultsshow that the Born model of melting applies to bcc metals in both the nominallyperfect state and in the case where point defects are present.Comment: 15 pages, 9 figure

Molecular dynamics study of melting of the bcc metal vanadium. I. Mechanical melting