Recent experimental results on the deformation field of single crystal CuNiAl shape memory alloys (SMA) by using Moire´ interference technique are reported and two kinds of austenite-martensite (A-M) interfaces with different deformation features are identified. The experimental discovery questioned the invariant plane hypothesis used in crystallographic theory of martensitic transformation. Some fundamental issues on the property of A-M interface and the related micro- and macro-deformation features are discussed.
On Deformation of A-M Interface in Single Crystal Shape Memory Alloys and Some Related Issues
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Sun, Q., Xu, T. T., and Zhang, X. (January 1, 1999). "On Deformation of A-M Interface in Single Crystal Shape Memory Alloys and Some Related Issues." ASME. J. Eng. Mater. Technol. January 1999; 121(1): 38–43. https://doi.org/10.1115/1.2815997
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