Versions are provided for α-martensite rod-shaped crystal initiation by three orthogonal longitudinal elastic waves propagating in orthogonal directions of the types 〈001〉γ and 〈110〉γ in Fe – 31% Ni single crystals. The probability is considered of direct initiation by Bain-type deformation waves. It is demonstrated within the scope of dynamic theory that the anticipated orientation of rod-like crystals is close to 〈111〉γ or to 〈905〉γ. Possible features of martensite crystal tetragonality are discussed. Ultrasound source power required for initiating martensitic transformation is determined.
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Work was carried out with financial support of the RFFI (project number 14-08-00734).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 9 – 13, May, 2016.
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Kashchenko, M.P., Chashchina, V.G. Promising Versions of α-Martensite Rod-Like Crystal Initiation in Iron Alloys by Three Elastic Wave Sources. Met Sci Heat Treat 58, 254–258 (2016). https://doi.org/10.1007/s11041-016-9998-3
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DOI: https://doi.org/10.1007/s11041-016-9998-3