Abstract
Abstract Fracture toughness tests were performed on Al2O3/Nb sandwich specimens using chevron-notched bending bars. These tests allow the independent determination of the fracture toughness K c at a defined crack velocity and the total work of fracture J c. The J c values are much greater than the data for the energy release rate G c following from K c. The fracture surfaces were studied by optical and scanning electron microscopy. The results are discussed in terms of the fracture toughness of cleavage in the Al2O3 and severe plastic deformation in the Nb sheet.
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Schedule a callMore From: International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde)
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