Abstract
The sources of elastic stresses at an antiphase boundary (APB) are discussed as well as the contribution of these elastic effects to APB energy. Attention is focused on TEM contrast recorded from anisotropic B2 APBs in rapidly solidified Fe-Al-Mo alloys, suggesting that the elastic stresses are minimized when APBs are oriented parallel to (100) planes and that the APB anisotropy increases with increase in elastic stress at APBs. It is pointed out, however, that only in the presence of extra factors such as the formation of APBs in an Fe-Al-Mo matrix supersaturated with Mo the elastic effects become important. 10 refs.
Published Version
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