| Numéro |
J. Phys. Colloques
Volume 49, Numéro C5, Octobre 1988
Interface Science and Engineering '87An International Conference on the Structure and Properties of Internal Interfaces |
|
|---|---|---|
| Page(s) | C5-293 - C5-298 | |
| DOI | https://doi.org/10.1051/jphyscol:1988535 | |
Interface Science and Engineering '87
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-293-C5-298
DOI: 10.1051/jphyscol:1988535
Laboratory of Metallurgy, Delft University of Technology, Rotterdamseweg 137, NL-2628 AL Delft, The Netherlands
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-293-C5-298
DOI: 10.1051/jphyscol:1988535
TEM DETERMINATION OF INCOHERENT TWIN-BOUNDARY STRUCTURE IN L12 ORDERED ALLOYS
F.D. TICHELAAR et F.W. SCHAPINKLaboratory of Metallurgy, Delft University of Technology, Rotterdamseweg 137, NL-2628 AL Delft, The Netherlands
Abstract
The structure of incoherent Σ=3 twin boundaries in the L12 ordered alloy Cu3Au is investigated employing TEM. The boundary planes are found to vary about ten degrees from a {112} plane. Employing the TEM method of α-fringes common diffraction vectors are used for determining the rigid-body translation between the two crystals at the boundary. No dilatation has been found at a (754) incoherent twin boundary within experimental error. Four grain boundary areas having different translations that preserve the density in the boundary are demonstrated, separated from each other by an antiphase boundary on one side of the boundary plane.