Mater.Sci.Res.Int. 1, 23-30, 1995
K. Tanaka¹, D. Hasegawa¹, H.J. Böhm² and F.D. Fischer³
¹Department of Aerospace Engineering,
Tokyo Metropolitan Institute of Technology, Hino, Japan
²Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria
³Christian Doppler Laboratory for Micromechanics of Materials
University for Mining and Metallurgy, Leoben, Austria
Overall thermomechanical behavior of polycrystalline shape memory allyos
is described from the micromechanical point of view by modeling the alloys
as a matrix-inclusion material system.
The martensite inclusions are assumed to be born in the austenite matrix
at the moment when a transformation condition is satisfied there during
The macroscopic constitutive equation is derived in rate form by means
of Eshelby's inhomogeneous theory.
The Mori-Tanaka theory is employed to take into account the interaction
of the martensite inclusions.
The formula of the overall thermomechanical material parameters, which
exhibits the effect of transformation, is derived explicitly.