title: Electron microscopy observations on the role of twinning in the evolution of microstructures.
abstract: Twinning plays an important role in phase transformations and can have significant effects on microstructural evolution. Different roles of twinning in the development of microstructures during precipitation and phase transformations are reviewed and illustrated with examples from investigations by high-resolution electron microscopy, including the effect of multiple twinning on the development of Ge precipitates in Al-Ge and Ag-Ge alloys, the twin dissociation of grain boundaries in Au, the formation of hexagonal Si at twin intersections and the effect of twin boundaries on the equilibrium shape of Pb inclusions in Al.
authors.affiliation: National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, 1, Cyclotron Rd., Berkeley, CA 94720, USA.
authors.forename: U
authors.initials: U
authors.lastname: Dahmen
authors.forename: C J D
authors.initials: CJ
authors.lastname: Hetherington
authors.forename: V
authors.initials: V
authors.lastname: Radmilovic
authors.forename: E
authors.initials: E
authors.lastname: Johnson
authors.forename: S Q
authors.initials: SQ
authors.lastname: Xiao
authors.forename: C P
authors.initials: CP
authors.lastname: Luo
mesh_terms: D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry; D011232:Chemical Precipitation; D003300:Copper / Q000737:chemistry; D003460:Crystallization; D005857:Germanium / Q000737:chemistry; D008854:Microscopy, Electron; D012825:Silicon / Q000737:chemistry
chemical_list: D000497:Alloys; D005857:Germanium; D003300:Copper; D000535:Aluminum; D012825:Silicon