Multiscale Modeling of Recrystallization

Conference · Mon Dec 07 04:00:00 EST 1998

OSTI ID:2184

Godfrey, A W ^[1]; Holm, E A; Hughes, D A; Lesar, R; Miodownik, M A

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1. Sandia National Laboratories

We propose a multi length scale approach to modeling recrystallization which links a dislocation model, a cell growth model and a macroscopic model. Although this methodology and linking framework will be applied to recrystallization, it is also applicable to other types of phase transformations in bulk and layered materials. Critical processes such as the dislocation structure evolution, nucleation, the evolution of crystal orientations into a preferred texture, and grain size evolution all operate at different length scales. In this paper we focus on incorporating experimental measurements of dislocation substructures, rnisorientation measurements of dislocation boundaries, and dislocation simulations into a mesoscopic model of cell growth. In particular, we show how feeding information from the dislocation model into the cell growth model can create realistic initial microstructure.

• Research Organization: Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 2184
• Report Number(s): SAND98-2734C; ON: DE00002184
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
Crystal Growth
Mathematical Models
Recrystallization