Paper Title:
Effect of State of Stress on the Cavitation Behavior of Al 5083 Superplastic Material
  Abstract

In this paper we address the controversial issue of nucleation of cavities in Al 5083 alloys and their subsequent growth to coalescence and failure. We focus on the origin and growth of cavities not only during the primary processing of Al 5083 in sheet forms, but also during the manufacture of these sheets into SPF (superplastic forming) components. Experimental observations of pre-existing cavities in this alloy are made using optical and electron microscopy. The role of sheet rolling direction, and the state of stress during superplastic deformation on the cavity formation and coalescence are also discussed. The effect of the state of stress (uniaxial, plane strain, balanced biaxial, and tri-axial) on the growth characteristics of cavitation is also examined. It is found that the uniaxial model based cavitation cannot directly be extended to predict the behavior of more complex stress states, unless great care is taken to identify the right strain measure for the mapping process.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
2931-2936
DOI
10.4028/www.scientific.net/MSF.475-479.2931
Citation
N. Chandra, M. K. Khraisheh, P. N. Kalu, "Effect of State of Stress on the Cavitation Behavior of Al 5083 Superplastic Material", Materials Science Forum, Vols. 475-479, pp. 2931-2936, 2005
Online since
January 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yasumi Ito, Akira Shimamoto
1246
Authors: Erick Petta Marinho, Alberto Sakata, Erika Fernanda Prados, Gilmar Ferreira Batalha
IV. Design, Testing and Modelling
Abstract:Superplasticity is characterized by high elongations under a high strain rate sensibility, and it’s variation with strain rate, temperature...
224
Authors: Jian Gang Wang, Dong Ying Ju, F.X. Yin, Lei Mao
Abstract:In this study, a biaxial tensile test of cruciform specimens containing centre notch was conducted in order to clarify the deformation...
196