6533b826fe1ef96bd1284f3e
RESEARCH PRODUCT
Grain boundary ridges slow dawn grain boundary motion: In-situ observation
A. S. GornakovaVera G. SursaevaFaina Muktepavelasubject
geographyFacet (geometry)geography.geographical_feature_categoryMaterials sciencebusiness.industryMechanical EngineeringTransition temperatureMotion (geometry)GeometryCondensed Matter PhysicsLow mobilityFacetingOpticsMechanics of MaterialsRidgeGeneral Materials ScienceGrain boundarybusinessdescription
Abstract The impact of grain boundary (GB) ridge on motion of high-angle GB in Zn was studied. The steady-state motion of faceted GB half-loop with [ 10 1 ¯ 0 ] tilt GB and GB ridge was recorded in-situ. The temperatures of faceting–roughening transition were experimentally defined for three GB half-loops. Above the transition temperature GB half-loops had GB “rough-to-rough” ridge with continuously curved GB segments. Below the transition temperature a facet appeared and coexisted with two “facet-to-rough” ridges. For the first time we could extract mobility of “rough-to-rough” and “rough-to-facet” ridges and bring out clearly that GB ridge slows down GB motion. Present removes contradiction between high facet mobility and the low mobility of faceted GB.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-06-01 | Materials Letters |