The martensitic transformation in indium-thallium alloys
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Date
2018-04-12
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Springer Nature
Abstract
The martensitic transformation in indium-thallium alloys is reviewed with a focus on the nature of the transformation as has been investigated using elastic and lattice vibrational properties. Recent measurements from thermal-neutron Laue and cold-neutron, triple-axis experiments are presented in an attempt to ratify the traditional explanation for the transformation as being driven by phonon softening for low-ζ [ζζ0][ζζ¯0] (i.e., T1) phonons. No evidence for phonon softening has been found to as low as ζ = 0.02 reciprocal lattice units on the T1 phonon branch. An alternative mechanism is advanced, for the transformation involving nucleation and growth on {111} planes, which appears to be consistent with electron diffuse scattering in the system. Such a mechanism is also consistent with the transition being driven by the electronic free energy of the system, as has been demonstrated by other properties. © The Minerals, Metals & Materials Society 2018
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Keywords
Indium alloys, Thallium alloys, Phonons, Transformations, Martensitic steels, Laue method, Cold neutrons
Citation
Finlayson, T. R., McIntyre, G. J., & Rule, K. C. (2018). The martensitic transformation in indium-thallium alloys. Paper presented to the International Conference on Martensitic Tranformations: Chicago, July 9-14, 2017 Chicago, IL. In Stebner A., Olson G. (eds) Proceedings of the International Conference on Martensitic Transformations: Chicago. The Minerals, Metals & Materials Series. (pp. 291-297). doi:10.1007/978-3-319-76968-4_45