Mater.Sci.Engng. A259, 73--84, 1999
F.G. Rammerstorfer¹, A.F. Plankensteiner², F.D. Fischer³ T.Antretter³
¹Institute of Lightweight Structures and Aerospace
TU Wien, Vienna, Austria
²Plansee AG, Reutte/Tyrol, Austria,
³Institute of Mechanics,
University of Mining and Metallurgy, Leoben, Austria
A hierarchical modeling strategy is presented which allows the computational
simulation of the thermo-mechanical behavior of materials exhibiting
different morphological characteristics at different length scales.
As a typical example of such materials high speed tool steels is considered
as some sort of in-situ metal matrix composite containing, at the micro
level, carbidic inclusions in a martensitic steel matrix, and, at the
meso level, clusters or stringers of inclusion rich areas.
The macroscopic stiffness and strength behavior depends on the morphology at
both levels which can be taken into account simultaneously by the
proposed hierarchical concept.