Artículo
On the correlation between residual stresses and displacements of the polycrystalline lattice: an experimental strategy
Fecha de publicación:
11/2020
Editorial:
North Atlantic University Union
Revista:
International Journal of Mechanics
ISSN:
1998-4448
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This work aims to propose a micro-indent method to evaluate the correlation between the relaxation of residual stresses and the shape changes of the polycrystalline lattice in specimens of a rolled plate of AA 6082-T6 aluminium alloy. Rolling strengthens the surface of the plate by introducing compressive residual stresses. Then, these stresses are relaxed by thermal distension. The method of micro-indents allowed measuring residual displacements with an error below ± 300 nm. The results obtained reveal that the rolling direction plays a vital role in terms of asymmetric expansion of the lattice. Furthermore, the lattice accumulates and restores elastic strain energy in the clockwise and anti-clockwise direction of rotation, alternatively. Finally, when the stress release process is finishing, the lattice adjusts the angle of rotation to approximate to the initial geometric shape.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - SANTA FE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Citación
Diaz, Felipe Victor; Rosso, F. N.; Walker, A. C.; Guidobono, A.P.M. ; On the correlation between residual stresses and displacements of the polycrystalline lattice: an experimental strategy; North Atlantic University Union; International Journal of Mechanics; 14; 11-2020; 208-214
Compartir
Altmétricas