Point Defect Calculations in Tungsten
Abstract
Calculations were made with a computer code developed for making point-defect calculations in body-centered-cubic metals. A Semi-empirical cubic potential based on experimental data was also developed for tungsten for these calculations. The vacancy migration energy for tungsten was calculated. The calculated value of 1.73 electron volts, together with experimental data, suggests that vacancies migrate in stage III recovery in tungsten. The formation energies for six possible equilibrium interstitial configurations were also calculated. The (110) split interstitial was the most stable configuration for tungsten with a formation energy of 9.73 electron volts.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1968
- Accession Number
- ADA380025
Entities
People
- Ronald L. Danilowicz
Organizations
- National Aeronautics and Space Administration