Abstract
Hot tearing is one of the most interesting defects that can be found during casting of aluminium alloys. The definition of this defects has some uncertainties such as “it does not always appear under apparently identical conditions” or “the defect is highly specific to certain alloys”. There are several works in the literature on the modelling and analytical approaches. However, the experimental findings have not been satisfactory. In this work, A356, A380 and A413 alloys were cast in two different moulds to investigate the hot tearing tendency with regard to the melt quality. It was found that bifilms had dominant effect over the hot tearing.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Campbell, J., Castings: [the new metallurgy of cast metals]. 2003, Butterworth Heinemann.
Eskin, D. G. and L. Katgerman, A Quest for a New Hot Tearing Criterion. Metallurgical and Materials Transactions A, 2007. 38(7): p. 1511–1519.
Clyne, T.W., M Wolf, and W. Kurz, The effect of melt composition on solidification cracking of steel, with particular reference to continuous casting. Metallurgical and Materials Transactions B, 1982. 13B(June): p. 259–266.
Spittle, J. A. and A.A. Cushway, Influences of superheat and grain structure on hottearing susceptibilities of Al-Cu alloy castings. Metals Technology, 1983. 10 (January): p. 6–13.
Rappaz, M, J.M Drezet, and M. Gremaud, A new hot-tearing criterion. Metallurgical and Materials Transactions A, 1999. 30(2): p. 449–455.
Zheng, M., Suyitno, and L. Katgerman. On transport phenomena and hot tearing criteria in DC casting of aluminum alloys, in Proceedings of 22nd Paso International Symposium on Materials Science. 2001. Roskilde, Denmark.
M’Hamdi, M, A. Mo, and C. Martin, Two-phase modeling directed toward hot tearing formation in aluminum direct chill casting. Metallurgical and Materials Transactions A, 2002. 33(7): p. 2081–2093.
M’Hamdi, M, A. Mo, and H. Fjasr, Tear Sim: A two-phase model addressing hot tearing formation during aluminum direct chill casting. Metallurgical and Materials Transactions A, 2006. 37(10): p. 3069–3083.
Dispinar, D., et al., Degassing, hydrogen and porosity phenomena in A356. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2010. 527(16–17): p. 3719–3725.
Dispinar, D and J. Campbell, Critical assessment of reduced pressure test. Part 1: Porosity phenomena. International Journal of Cast Metals Research, 2004. 17(5): p. 280–286.
Dispinar, D and J. Campbell, Critical assessment of reduced pressure test. Part 2: Quantification. International Journal of Cast Metals Research, 2004. 17(5): p. 287–294.
Dispinar, D. and J. Campbell, Use of bifilm indexas an assessment of liquid metal quality. International Journal of Cast Metals Research, 2006. 19(1): p. 5–17.
Dispinar, D. and J. Campbell, Effect of casting conditions on aluminium metal quality. Journal of Materials Processing Technology, 2007. 182(1–3): p. 405–410.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Uludağ, M., Çetin, R., Dişpinar, D. (2016). Bifilms and Hot Tearing of Al-Si Alloys. In: Tiryakioǧlu, M., Jolly, M., Byczynski, G. (eds) Shape Casting: 6th International Symposium. Springer, Cham. https://doi.org/10.1007/978-3-319-48166-1_1
Download citation
DOI: https://doi.org/10.1007/978-3-319-48166-1_1
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48622-2
Online ISBN: 978-3-319-48166-1
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)