Finite element/experimental analysis of cavity nucleation in an Al–Si–Ge alloy

Koenigsmann, H. J.; Starke, Jr, E. A.; Allaire, P. E.

Affiliations

¹Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22903, U.S.A.

²Department of Mechanical, Aerospace and Nuclear Engineering, University of Virginia, Charlottesville, VA 22903, U.S.A.

Abstract

Cavity nucleation in a recently developed Al-0.55Si-2.02 Ge (wt%) alloy was studied by measuring the volume fraction of voids as a function of strain and precipitate diameter using a pycnometer. The finite element method was employed in order to calculate stress distributions around the SiGe precipitates for different precipitate diameters using both elasticity and plasticity models. This analysis allows a quantitative comparison between the experimental data and the prediction of a stress criterion for cavity nucleation based on the model developed by Brown and Stobbs.

Links

DOI: 10.1016/1359-6454(95)00428-9

WoS: A1996UY53900005

History

Received: 1995-08-30

Revised: 1995-11-17

Online: 1999-02-12

Cited Works (2)

Year	Entry
1979	Goods SH, Brown LM. The nucleation of cavities by plastic deformation. Acta Metall. 1979;27(1):1-15.
1970	Underwood EE. Quantitative Stereology. Reading, MA: Addison-Wesley; 1970.

Cited By (3)

Year	Entry
2013	Miloud MH, Imad A, Benseddiq N, Bouiadjra BB, Bounif A, Serier B. A numerical analysis of relationship between ductility and nucleation and critical void volume fraction parameters of Gurson–Tvergaard–Needleman model. Proc Inst Mech Eng Part C-J Eng Mech Eng Sci. November 2013;227(11):2634-2646.
2004	Lievers WB, Pilkey AK, Lloyd DJ. Using incremental forming to calibrate a void nucleation model for automotive aluminum sheet alloys. Acta Mater. June 7, 2004;52(10):3001-3007.
2001	Thomson CIA. Modeling the Effects of Particle Clustering on Ductile Failure [PhD thesis]. Ottawa, ON: Carleton University; May 2001.