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Energetics in Martensites

Bruno, O. P. (1998) Energetics in Martensites. In: IUTAM Symposium on Transformation Problems in Composite and Active Materials. Solid Mechanics and its Applications. No.60. Kluwer Academic Publishers , Dordrecht, pp. 91-108. ISBN 978-0-7923-5122-1.

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Martensitic transformations are shape-deforming phase transitions which can be induced in certain alloys as a result of changes in the imposed strains, stresses or temperatures. The interest in these alloys, which undergo a shape-deforming phase transition from a high temperature phase (austenite) to a low temperature phase (martensite), stems in part from their applicability as elements in active structures. In this paper we focus on the energy transfers that accompany the martensitic phase change. We discuss, in three concrete examples, the ways in which temperature, together with the elastic and dissipated energies, determine the equilibria as well as the quasi-static dynamics in martensites. Thus, in §1 we consider the pseudoelastic hysteresis in shape-memory wires; our treatment draws from (Leo et al., 1993; Bruno et al, 1995). In §2 on the other hand, we follow (Bruno et al., 1996) and discuss equilibrium configurations in polycrystalline martensitic polycrystals. In §3 finally, we present some new theoretical computations for certain typical microstructural lengthscales, the twin widths, observed in single-crystalline martensite twinning.

Item Type:Book Section
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Bruno, O. P.0000-0001-8369-3014
Additional Information:© 1998 Kluwer Academic Publishers.
Subject Keywords:Habit Plane; Transformation Strain; Antiplane Shear; Triangular Region; NiTi Wire
Series Name:Solid Mechanics and its Applications
Issue or Number:60
Record Number:CaltechAUTHORS:20200610-144648854
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103828
Deposited By: Tony Diaz
Deposited On:10 Jun 2020 22:52
Last Modified:16 Nov 2021 18:25

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