The Twinning Modes of B2-B19′ Martensitic Transformation in NiTi Alloys - A Phase Field Study

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Abstract:

A three-dimensional phase field model applicable for the B2-B19′ martensitic phase transformation of NiTi alloys was developed to predict the twinning modes in the B2-B19′ transition. The phase field simulation results showed that by taking into account the transformation induced elastic strain, the martensite variants were self-accommodated and sheared along the specific interface in the entire transition stage for reducing the elastic energy, whether the formed interface between the variants belongs to twinning plane could be determined by calculating the minimum value of long range elastic interaction energy, Bpq. Through comparison with the existing analytical solutions, it is demonstrated that the phase field model can be used to predict the type I twinning modes in the B2-B19′ phase transition with good precision.

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Periodical:

Advanced Materials Research (Volumes 399-401)

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1768-1772

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November 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] M.S. Wechsler, D.S. Lieberman and T.A. Read: Trans. AIME. Vol. 197 (1953), p.1503

Google Scholar

[2] J.S. Bowles and J.K. Mackenzie: Acta Metall. Mater. Vol. 2 (1954), p.129

Google Scholar

[3] K. Otsuka and X. Ren. Prog: Mater. Sci. Vol. 50 (2005), p.511

Google Scholar

[4] K.M. Knowles and D.A. Smith: Acta Metall. Vol. 29 (1981), p.1445

Google Scholar

[5] M. Nishida, S. Li and K. Kitamura et al: Scr. Mater. Vol. 39 (1998), p.1749

Google Scholar

[6] M. Pitteri and G. Zanzotto: Acta Mater. Vol. 46 (1998), p.225

Google Scholar

[7] K. Bhattacharya: Microstructure of martensite: Why it forms and how it gives rise to the shape-memory effect (Oxford University Press, New York 2003)

DOI: 10.1093/oso/9780198509349.001.0001

Google Scholar

[8] Y. Wang and A.G. Khachaturyan: Acta Mater. Vol. 45 (1997), p.759

Google Scholar

[9] A.G. Khachaturyan: Theory of Structural Transformation in Solids (Wiley-Interscience Publication, New York 1983)

Google Scholar

[10] M.F. Wagner and W. Windl: Acta Mater. Vol. 56 (2008), p.6232

Google Scholar