Accession Number:

ADA200380

Title:

Estimation of the Yield Strength of Metals from Crystal Defect Energies

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1988-09-27

Pagination or Media Count:

15.0

Abstract:

It has been found that the yield strength of a number of metals may be estimated by considering the contributions of various crystal defects to the strain energy per unit volume of a metal. It was found that for the metals in this study, the main contributions to the strain energy came from dislocations and grain boundaries. For high purity, well annealed metals, the contributions of solute atoms, self-interstitials, annealing twin boundaries and stacking faults are negligible. The calculations of the strain energy per unit volume at yield from crystal defect energies show good correlation to experimental data for high purity metals available in the open literature.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE