Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/75108
Type: Artigo de periódico
Title: THE EFFECT OF MICROSTRUCTURE ON THE MECHANICAL-BEHAVIOR AND FRACTURE MECHANISM IN A 7050-T76 ALUMINUM-ALLOY
Author: ALARCON, OE
NAZAR, AMM
MONTEIRO, WA
Abstract: The mechanical behavior of the 7050 aluminum alloy with partially recrystallized (PR), recrystallized (R) and unrecrystallized (UR) microstructures was investigated. The UR and R microstructures were produced by thermomechanical treatment. The monotonic tensile properties showed no significant difference between the microstructures, but the fracture toughness of the UR microstructure showed a significant improvement over that of the PR and R microstructures. The higher fracture toughness was associated with a transgranular fracture mode and larger blunting of the crack tip. In situ deformation studies by transmission electron microscopy showed that the fracture process was due to a stress concentration effect at the crack tip.
Country: Suíça
Editor: Elsevier Science Sa Lausanne
Rights: fechado
Identifier DOI: 10.1016/0921-5093(91)90697-L
Date Issue: 1991
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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