Accession Number:

AD0410892

Title:

STUDY OF ATOMIC MOTIONS ON TWINNING OF AN ORDERED ALLOY.

Descriptive Note:

Final rept., 1 Apr 61-23 Jan 63,

Corporate Author:

NUCLEAR METALS DIV TEXTRON INC WEST CONCORD MASS

Personal Author(s):

• Rapperport,E.J.
• Hartley,C.S.
• Levine,E.D.

Report Date:

1963-05-01

Pagination or Media Count:

17.0

Abstract:

A model for the twinned structure of Mg3Cd from its ordered, hexagonal state is derived from the classical twin indices for 1012 twinning. Use of these indices transforms the ordered hexagonal Mg3Cd into an ordered orthorhombic structure having identical atom positions as the hexagonal structure, but with a different sequence of magnesium and cadmium occupancy. This different sequency gives rise to additional x-ray super lattice lines which were analyzed theoretically and experimentally with respect to the postulated model. Author

Descriptors:

• CADMIUM
• ALLOYS
• CRYSTALS
• MELTING
• X RAY DIFFRACTION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE