ITLApplied  Computational Mathematics Division
ACMD Seminar Series
Attractive Image NIST

Theory and Computation of Martensitic Microstructure

Bo Li
Department of Mathematics, University of Maryland College Park

Tuesday, March 25, 2003 13:00-14:00,
Room 145, NIST North (820)
Tuesday, March 25, 2003 11:00-12:00,
Room 4511

Abstract: Martensitic crystals such as shape memory alloys are a class of smart material that can undergo diffusionless, structural, reversible, solid-to-solid phase transformations. Such martensitic transformations are characterized by the exhibition of martensitic microstructures that are fine-scale mixtures of distinct but coherent martensitic variants. In this talk, both experimental results and nonconvex energy minimization properties of martensitic microstructures will be first reviewed. A mathematical theory of the stability of laminated martensitic microstructures with its application to the numerical analysis of such microstructures will be then presented. Numerical models and simulation results of a martensitic microstructure near an interface between a laminate and a single variant that has been observed in a series of biaxial loading experiments will be finally described.
Contact: A. J. Kearsley

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Last updated: 2011-01-12.