MICROSCALE ARRANGEMENT EFFECTS THE THERMOMECHANICAL BEHAVIOR ADVANCED2-PHASE MATERIALS

Finite Element based micromechanical methods are used to study the inf luence of microscale phase arrangements on the overall and microscale thermomechanical properties of two advanced two-phase materials, duple x steels and unidirectional continuously reinforced metal matrix compo sites (MMCs). Both inclusion-matrix topologies and interwoven microgeo metries are investigated for duplex steels, and the predicted macrosco pic transverse elastoplastic responses are correlated with quantitativ e stereological descriptions of the microgeometries. For the MMCs, the emphasis is put on the influence of the fiber arrangement on the micr oscale residual stress states of the as-produced material and on their effects on damage mechanisms.