Accession Number : ADP006617

Title :   Evolving Phase Boundaries in Deformable Continua,

Corporate Author : CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF MATHEMATICS

Personal Author(s) : Gurtin, Morton E.

Report Date : MAR 1992

Pagination or Media Count : 3

Abstract : Recently, Gurtin and Struthers 2 developed a dynamical theory of phase transitions in crystal-crystal systems in which the interface is sharp, coherent, and endowed with energy, entropy, and superficial force. A fundamental conceptual ingredient of the theory is the use of three force systems: deformational forces that act in response to the motion of material points; accretive forces that act within the crystal lattice to drive the crystallization process; attachment forces associated with the attachment and release of atoms as they are exchanged between phases. Here I will discuss the main results of the theory, which are constitutive equations and balance laws for the interface.

Descriptors :   *CRYSTALS, *PHASE TRANSFORMATIONS, ATOMS, ATTACHMENT, BALANCE, CRYSTAL LATTICES, CRYSTALLIZATION, DRIVES, ENERGY, ENTROPY, EQUATIONS, INTERFACES, MATERIALS, MOTION, PHASE, RELEASE, RESPONSE, THEORY, TRANSITIONS, DEFORMATION.

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE