title: Scaling behavior of grain-rotation-induced grain growth.
abstract: Recent investigations of grain growth in nanocrystalline materials have revealed a new growth mechanism: grain-rotation-induced grain coalescence. Based on a simple model employing a stochastic theory and using computer simulations, here we investigate the coarsening of a polycrystalline microstructure due solely to the grain-rotation coalescence mechanism. Our study demonstrates that this mechanism exhibits power-law growth with a universal scaling exponent. The value of this universal growth exponent is shown to depend on the assumed mechanism by which the grain rotations are accommodated.
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: Dorel
authors.initials: D
authors.lastname: Moldovan
authors.forename: Vesselin
authors.initials: V
authors.lastname: Yamakov
authors.forename: Dieter
authors.initials: D
authors.lastname: Wolf
authors.forename: Simon R
authors.initials: SR
authors.lastname: Phillpot