Thermally activated unpinning of screw dislocations in the anomalous regime in L12 compounds

M. Khantha, J. Cserti, V. Vitek

Research output: Contribution to journalConference article

4 Citations (Scopus)


We present a model for the anomalous increase of the yield stress exhibited by many L12 compounds. It is based on two thermally activated processes that describe respectively the pinning and unpinning of [1̄01] screw dislocations in the (111) plane. The model explains all the important characteristic features observed in the anomalous regime. We discuss the applications of the model to Ni3Ga and Ni3(Al,Ta).

Original languageEnglish
Pages (from-to)417-422
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Publication statusPublished - Jan 1 1993
EventProceedings of the 3rd Biennial Meeting of Chemical Perspectives of Microelectronic Materials - Boston, MA, USA
Duration: Nov 30 1992Dec 3 1992


ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this