Abstract
A method is presented for the simultaneous measurement of a macroscopic continuum strain field and microscopic intermittent martensite band nucleation behavior arising in single-crystal Ni-Mn-Ga foils under deformation. The continuum strain field was measured using Digital Image Correlation. The intermittent martensite band nucleation was measured using Stress Drop Analysis in a stress-strain curve. Comparison of the results reveals a phenomenological correlation. This method is extremely useful for investigation of deformation mechanisms in single-crystal shape memory alloys.
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Acknowledgements
This research was partially supported by the Deutsche Forschungsgemeinschaft (DFG), priority program SPP1239 “Magnetic Shape”. The author expresses his deep gratitude to Assoc. Prof. Satoru Yoneyama (Aoyama Gakuin University, Japan) for the experimental help in DIC measurements.
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Murasawa, G., Pinneker, V., Kohl, M. (2017). Simultaneous Measurement of Continuum Strain Field and Intermittent Martensite Band Nucleation in Single Crystal Ni-Mn-Ga Foils. In: Sun, Q., Matsui, R., Takeda, K., Pieczyska, E. (eds) Advances in Shape Memory Materials. Advanced Structured Materials, vol 73. Springer, Cham. https://doi.org/10.1007/978-3-319-53306-3_12
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DOI: https://doi.org/10.1007/978-3-319-53306-3_12
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