Article ID Journal Published Year Pages File Type
1502263 Scripta Materialia 2006 4 Pages PDF
Abstract

The modulus and damping of martensitic Ni49Mn26Ga25 (wt.%) cantilevers that deform by twin motion when bent have been investigated at room temperature. The modulus increases logarithmically as a function of aging time while the damping decreases commensurably. Both changes signal a gradual reduction of the twin boundary mobility. The logarithmic time dependence indicates a wide distribution of relaxation times. This distribution results from the volume dependence of the adaptation kinetics of nano-sized short range ordered clusters to the martensitic symmetry.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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