Effects of Solid Fractions in a Slurry Casting Process on Shrinkage and Microstructure of 7075 Aluminum Alloy

Sureebhorn Rattanadakul; Jessada Wannasin; Somjai Janudom; Thawatchai Plookphol; Sirikul Wisutmethangoon

doi:10.4028/www.scientific.net/AMR.968.125

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 968Effects of Solid Fractions in a Slurry Casting...

Effects of Solid Fractions in a Slurry Casting Process on Shrinkage and Microstructure of 7075 Aluminum Alloy

Abstract:

Effects of Gas Induce Semi Solid (GISS) on shrinkage porosity of 7075 aluminum alloy were investigated. Initial solid fractions were controlled by rheocasting time at 5, 10 and 15 seconds and 4 and 6 bar of gas pressure. The results showed that the initial solid fractions were increased by increasing rheocasting time and gas pressure. As for the shrinkage, values of the GISS process samples were lower than those of the conventional process samples. In addition, the shrinkage areas of semi solid samples were decreased by increasing the initial solid fractions. The microstructure of semi solid samples was shown to be uniform globular grains along the samples.

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Periodical:

Advanced Materials Research (Volume 968)

Pages:

125-128

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.968.125

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Online since:

June 2014

Authors:

Sureebhorn Rattanadakul*, Jessada Wannasin, Somjai Janudom, Thawatchai Plookphol, Sirikul Wisutmethangoon

Keywords:

7075 Aluminum Alloy, Gas Induce Semi-Solid (GISS), Initial Solid Fractions, Shrinkage, Slurry Casting

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References

[1] M.C. Flemings, Metall. Trans. B. Vol. 22B (1991) 269-293.

Google Scholar

[2] J Wannasin, R.A. Martinez, M.C. Flemings, Solid State Phenom. 116-117 (2006) 366 -369.

Google Scholar

[3] A. Reis, Z. Xu, R.V. Tol, R. Neto, Modelling feeding flow related shrinkage defects in aluminum castings. J. Manuf. Processes 14 (2012) 1–7.

DOI: 10.1016/j.jmapro.2011.05.003

Google Scholar

[4] WANG Kai, Liu Chang-ming, ZHAI Yan-bo, ZOU Mao-hua, Microstructural characteristics of near-liquidus cast AZ91D alloy during semi-solid die casting. Trans. Nonferrous Met. Soc. China 20(2010) 171 - 177.

DOI: 10.1016/s1003-6326(09)60116-3

Google Scholar

[5] S Thanabumrungkul, S Janudom, R Burapa, P Dulyapraphant, J Wannasin, Transactions of Nonferrous Metals Society of China, 20(2010) s1016 –s 1021.

DOI: 10.1016/s1003-6326(10)60623-1

Google Scholar

[6] J Wannasin, R Canyook, R Burapa, M. C Flemings, Evolution of Solid Fraction in a Rheocast Aluminum Die Casting Alloy by a Rapid Quenching Method. Scripta Materialia 59 (2008) 1091–1094.

DOI: 10.1016/j.scriptamat.2008.07.029

Google Scholar

[7] R Canyook, J Wannasin, S Wisuthmethangkul, M. C Fleming, Characterization of the microstructure evolution of a semi solid metal slurry during the early stages. Acta Mater, 2012, 60 3501 – 351014.

DOI: 10.1016/j.actamat.2012.03.002

Google Scholar