Carrillo Galdó, LluísMañosa, LluísOrtín, Jordi, 1959-Planes Vila, AntoniVives i Santa-Eulàlia, Eduard2010-06-082010-06-0819980031-9007https://hdl.handle.net/2445/12794Acoustic emission avalanche distributions are studied in different alloy systems that exhibit a phase transition from a bcc to a close-packed structure. After a small number of thermal cycles through the transition, the distributions become critically stable (exhibit power-law behavior) and can be characterized by an exponent alpha. The values of alpha can be classified into universality classes, which depend exclusively on the symmetry of the resulting close-packed structure.4 p.application/pdfeng(c) American Physical Society, 1998Equacions d'estatCiència dels materialsTransformacions de fase (Física estadística)Equations of stateMaterials sciencePhase transformations (Statistical physics)info:eu-repo/semantics/article147484info:eu-repo/semantics/openAccess