THE ROLE OF STRUCTURAL LEDGES AS MISFIT-COMPENSATING DEFECTS - FCC-BCC INTERPHASE BOUNDARIES

Authors
SHIFLET GJ VANDERMERWE JH
Citation
Gj. Shiflet et Jh. Vandermerwe, THE ROLE OF STRUCTURAL LEDGES AS MISFIT-COMPENSATING DEFECTS - FCC-BCC INTERPHASE BOUNDARIES, Metallurgical and materials transactions. A, Physical metallurgy andmaterials science, 25(9), 1994, pp. 1895-1903
Citations number
26
Categorie Soggetti
Metallurgy & Mining","Material Science
Journal title
Metallurgical and materials transactions. A, Physical metallurgy andmaterials science → ACNP
ISSN journal
10735623
Volume
25
Issue
9
Year of publication
1994
Pages
1895 - 1903
Database
ISI
SICI code
1073-5623(1994)25:9<1895:TROSLA>2.0.ZU;2-A
Abstract
An energetic justification is given for structural ledges as interfaci al misfit compensating defects, based on elastic considerations. We de tail the NW-x configuration in which the orientation is imposed by clo se matching along the [211]fcc and [110]bcc directions and {111}fcc an d {110}bcc planes, respectively. Special prominence is given to the te rrace between structural ledges, where it is shown that an elastic rel axation obtains at specific terrace lengths based on atomic matching. It is this relaxation that makes a stepped interface more stable than a planar one at all meaningful values of misfit.