In-situ hot microhardness study of cavitation in superplastic 60/40 microduplex brass |
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| Authors: | G S Sohal |
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| Affiliation: | (1) Department of Materials, Cranfield Institute of Technology, MK43 OAL Cranfield, Bedford, UK;(2) Present address: Institut für Festkörperforschung, Kernforschungsanlage (KFA), D-5170 Julich, Germany |
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| Abstract: | The hardness of the individual phases of the 60/40 brass have been measured in situ over the temperature range 20 to 700° C. Activation energy values for the alloy and its phases were determined from the hot hardness data. Such data are utilized to understand the occurrence of cavitation during superplastic deformation of this alloy. It is also suggested how cavitation may be minimized by lowering the deformation temperature to 250° C where the alloy still exhibits large elongations. |
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