Abstract
In this study, the deep etch method was applied to Al–Si casting alloys in order to visualize the presence of the bifilms . Reduced pressure test was used to quantify the bifilms in the melt. The cross section of the RPT samples was subjected to deep etching with H2SO4, HNO3, NaOH, and NaCl solutions at various temperatures and concentrations. The aim was targeted to etch the matrix and reveal bifilms on these surfaces. Additionally, the oxide structure on the surface of cast specimens was altered by treatment at 500 °C for 8 h. One half was ground, and these samples were subjected to deep etching again in the same conditions. It was found that bifilms were dissolved after 5 min of deep etching in HNO3, H2SO4, NaCl, and NaOH solutions.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Gürsoy Ö et al (2015) The time dependent effect of adding Al-5Ti-1 B grain refiner on A356 aluminium casting alloy. Paper presented at the 7th Aluminium Symposium, İstanbul, Turkey
Nafisi S, Ghomashchi R (2006) Combined grain refining and modification of conventional and rheo-cast A356 Al–Si alloy. Mater Charact 57(4–5):371–385
Louvis E, Fox P, Sutcliffe CJ (2011) Selective laser melting of aluminium components. J Mater Process Technol 211(2):275–284
Alexander DTL, Greer AL (2002) Solid-state intermetallic phase tranformations in 3XXX aluminium alloys. Acta Materialia 50(10):2571–2583
Makhlouf MM, Guthy HV (2001) The aluminum–silicon eutectic reaction: mechanisms and crystallography. J Light Metals 1(4):199–218
Ghomashchi R (2012) The evolution of Al–Ti–Si intermetallic phases in Ti-added A356 Al–Si alloy. J Alloy Compd 537:255–260
Nafisi S, Ghomashchi R (2006) Effects of modification during conventional and semi-solid metal processing of A356 Al–Si alloy. Mater Sci Eng A 415:273–285
Dispinar D, Campbell J (2004) Critical assessment of reduced pressure test. Part 1: porosity phenomena. Int J Cast Metals Res 17(5):280–286
Tan E et al (2011) Reproducibility of reduced pressure test results in testing of liquid aluminum gas levels. Paper presented at the 6th international advanced technologies symposium (IATS’11), Elazığ, Turkey, 16–18 May 2011
Dispinar D, Akhtar S, Nordmarka A, Di Sabatino M, Arnberg L (2010) Degassing, hydrogen and porosity phenomena in A356. Mater Sci Eng A 527:3719–3725
Dispinar D, Campbell J (2004) Critical assessment of reduced pressure test. Part 2: quantification. Int J Cast Metals Res 17(5):287–294
Dispinar D, Kvithyld A, Nordmark A (2012) Quality comparison between molten metal from remelted sheets: mill finish and coated. In: 141st TMS annual meeting, pp 1031–1035, USA, 11–15 March 2012
Kumar S, Grant PS, O’Reilly KAQ (2016) Evolution of Fe bearing intermetallics during DC casting and homogenization of an Al–Mg–Si Al alloy. Metall Mater Trans A 47(6):3000–3014
Feng S, Liotti E, Lui A, Kumar S, Mahadevegowda A, O’Reilly KAQ, Grant PS (2018) An in-situ method to estimate the tip temperature and phase selection of secondary Fe-rich intermetallics using synchrotron X-ray radiography. Scripta Mater 149:44–48
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Tezer, F., Gürsoy, Ö., Erzi, E., Zorağa, M., Dışpınar, D. (2019). Determination of Liquid Metal Quality with Deep Etching Method. In: Tiryakioğlu, M., Griffiths, W., Jolly, M. (eds) Shape Casting. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-06034-3_7
Download citation
DOI: https://doi.org/10.1007/978-3-030-06034-3_7
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-06033-6
Online ISBN: 978-3-030-06034-3
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)