Abstract
The microstructure and mechanical properties of an automotive component die-cast by Swirled Enthalpy Equilibration Device process are analyzed. Two secondary aluminum alloys have been used, AlSi7Cu3Mg and AlSi9Cu3(Fe) alloys. The castings have been investigated by means of computer tomography to evaluate the concentration and distribution of casting defects, especially in the regions of thick wall thickness. Microstructural investigation has been carried out by means of optical microscope and image analysis technique. The results reveal a not uniform distribution of primary α-Al globules throughout the casting, with a solid fraction ranging from 48 to 58%, and eutectic segregation phenomena. The castings have been mapped in terms of mechanical properties and quality index. The variation of the mechanical properties reflects the presence of local casting defects and alloying segregation.
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
E.J. Vinarcik, High Integrity Die Casting Processes (New York, NY: John Wiley & Sons, 2003), 3–12.
D.H. Kirkwood et al., Semi-solid Processing of Alloys (Berlin Heidelberg: Springer-Verlag, 2010), 109–168.
M.E. Schlesinger, Aluminum Recycling (Boca Raton: CRC Press; 2007), 176–192.
D. Doutre, G. Hay and P. Wales, Semi-solid concentration processing of metallic alloys (US Patent No. 6,428,636, August 6 2002).
J. Langlais and A. Lemieux, “The SEED Technology for Semi-Solid Processing of Aluminum Alloys: A Metallurgical and Process Overview”, Solid State Phenomena, 116–117 (2006), 472–477.
C.H. Câceres, A Rationale for the Quality Index of Al-Si-Mg Casting Alloys, Int. J. Cast Met. Res., 10 (1998), 293–299.
F. Piasentini, F. Bonollo and A. Tiziani, Fourier thermal analysis applied to sodium eutectic modification of an Al-Si7 alloy, Metal. Sci. Technol., 23 (2005), 11–20.
L. Heusler and W. Schneider, Influence of alloying elements on the thermal analysis results of Al-Si cast alloys, J. Light Met. 2 (2002), 17–26.
P.K. Seo, D.U. Kim and CG. Kang, Effects of die shape and injection conditions proposed with numerical integration design on liquid segregation and mechanical properties in semisolid die casting process, J. Mater. Process. Technol. 176 (2006) 45–54.
CM. Gourlay, H.I. Laukli and A.K. Dahle, Defect Band Characteristics in Mg-Al and Al-Si High-Pressure Die Castings, Metall. Mater. Trans. A 38 (2007) 1833–1844.
M. Makhlouf and D. Apelian, “Casting characteristics of aluminum die casting alloys” (Report DEFC07–99ID13716, WPI, 2002).
J.L. Jorstad, Understanding sludge, Die Cast. Eng. 11/12 (1986) 30–36.
A. Flores et al., “Kinetics of the formation, growth and sedimentation of the phase Ali5Fe,Mn3Si2 in Al-Si-Cu alloys” (Paper presented at the Int. Die Casting Congress and Exposition, Detroit, Michigan, USA, 30 Sept. – 3 Oct. 1991), 293–297.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Timelli, G., Capuzzi, S., Ferraro, S., Fabrizi, A., Capra, L. (2014). Microstructure and Mechanical Properties of Automotive Components Die Cast with Secondary Aluminum Alloys by SEED Semi-Solid Process. In: Tiryakioğlu, M., Campbell, J., Byczynski, G. (eds) Shape Casting: 5th International Symposium 2014. Springer, Cham. https://doi.org/10.1007/978-3-319-48130-2_27
Download citation
DOI: https://doi.org/10.1007/978-3-319-48130-2_27
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48594-2
Online ISBN: 978-3-319-48130-2
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)