Effect of coalescence on cavity growth during superplastic deformation
- 1 June 1985
- journal article
- research article
- Published by Maney Publishing in Materials Science and Technology
- Vol. 1 (6) , 461-465
- https://doi.org/10.1179/026708385790124666
Abstract
The accumulation of cavitation damage with increasing strain during the biaxial deformation of two superplastic aluminium-base alloys has been studied using densitometry and quantitative metallography. A model based on constitutive relationships for the diffusive and plastic growth of voids has been extended to account for cavity coalescence, a phenomenon commonly observed during superplastic deformation. Good agreement between the measured and calculated cavity growth rates was obtained for one alloy (AI 7475), while discrepancies observed for the second alloy (Supral 220) are explained in terms of the effects of continuous cavity nucleation. MST/189Keywords
This publication has 3 references indexed in Scilit:
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- A Criterion for Ductile Fracture by the Growth of HolesJournal of Applied Mechanics, 1968