INTERACTION BETWEEN V_4C_3 PARTICLES AND DEFORMATION TWINS

By using Moire′ pattern formed by the double diffraction of precipitated V_4C_3 and matrix ofγ-phase,the nature of the structure of the interface between precipitated V_4C_3 and matrix aswell as the retarding effect of V4C3 particles on the development of deformation twins havebeen investigated.It is shown that partially coherent interfaces exist between V_4C_3 and ma-trix.Twinning dislocations may transform into interfacial dislocations under external stress,and may move continuously through bypassing or cross-sliping.