The two-phase mixture of ordered and disordered phases associated with the order-disorder transformation in alloys based on Cd3Mg has been identified metallographically in single crystal specimens. The morphology of the two-phase structure is such that the disordered phase forms lamellae in an ordered matrix. The habit plane on which the lamellae form has been established by two-surface analysis and the orientation relationship determined using back-reflection Laue technique. The results are shown to be consistent with the notion that the habit plane of the lamellae is determined by minimum atomic mismatch in the interface between lamellae and matrix. Previously obtained hardness data are explained in terms of the conditions required to produce the two-phase structures.
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Noble, F.W., Fairhurst, W. The two-phase region at Cd3Mg. J Mater Sci 7, 781–786 (1972). https://doi.org/10.1007/BF00549906
- Phase Form
- Orientation Relationship
- Habit Plane
- Hardness Data