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|Type:||Artigo de periódico|
|Title:||The Effect Of Microstructure On The Mechanical Behavior And Fracture Mechanism In A 7050-t76 Aluminum Alloy|
|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 microstructures 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. © 1991.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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