Point defect-dislocation interactions in molybdenum

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Abstract
A discrete lattice model is used to investigate the interaction of vacancies with a dislocation in the BCC metal, molybdenum. A new interatomic potential to represent molybdenum has been produced. The formation energies and formation volumes for the vacancy and six interstitial configurations are investigated and the results compared with previous studies for FCC metals. Two edge dislocations with 1/2(111) Burgers vector with either (110) or (112) slip planes have been simulated and the interaction energy with a vacancy at various sites around the core calculated. The results are compared with those from similar studies for iron and with the predictions of continuum elasticity theory.