THEORETICAL DETERMINATION OF TWIN BOUNDARIES IN R-PHASE OF Ni-Ti SHAPE MEMORY ALLOYS
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Abstract
Twin boundaries among different variants in Nitinal R-phase were determined using group decomposition theory. It was found that there are four variants in the R-phase. The four variants may form three types of self-accommodation group. The four variants are twin related with l00p and l00p as twin planes. These results are in good agreement with the experiment data.
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