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Título

Influence of the thermomechanical processing on the superplastic forming of Mg-Al alloys

AutorPérez Prado, María Teresa; Valle, Jorge del; Salort, F.; Peñalba, F.; Gómez, X.; Ruano, Oscar Antonio
Palabras claveMagnesium alloys
Superplastic forming
Severe rolling
Fecha de publicación2007
EditorW.S. Maney & Son
CitaciónMaterials Science and Technology, 23 (4) :444-450 (2007)
ResumenThe aim of this paper is to study the influence of the initial microstructure of several Mg–Al alloys on their superplastic formability and on their post-forming microstructure and mechanical properties. Various thermomechanical processing routes, such as annealing, conventional rolling, severe rolling and cross rolling, were used in order to fabricate AZ31 and AZ61 alloys with different grain sizes. These materials were then blow formed into a hat shaped die. It was found that the processing route has only a small effect in the formability of Mg–Al alloys or on the postforming microstructures and properties due to rapid dynamic grain growth taking place at the forming temperatures. Nevertheless, good formability is achieved as a result of the simultaneous operation of grain boundary sliding and crystallographic slip during forming.
Versión del editorhttp:dx.doi.org/10.1179/174328407X176866
URIhttp://hdl.handle.net/10261/45131
DOI10.1179/174328407X176866
ISSN0267-0836
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