Effects of Solidification Time on Porosity Content in A201 Aluminum Alloy Castings

Article Preview

Abstract:

The purpose of the present study was to discuss the effects of local solidification time on porosity content of long solidification range A201 aluminum alloy plate castings. With systematic change in the riser size, together with variation of thickness and length, were cast in different kinds of molds. The sand molds with end chill for the plate castings were made of 100% silica sand. The porosity content of A201 aluminum alloy was affected by the local solidification time in this study. The correlation between porosity content and solidification time is found to be split into 2 bands, each being associated with one of the two thickness of plate castings.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 311-313)

Pages:

648-652

Citation:

Online since:

August 2011

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2011 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Y.S. Kuo, " A study of Riser Feeding Behavior of High Strength A201 Aluminum Alloy," Ph. D. Thesis, NCKU, Tainan, Taiwan, ROC (1990)

Google Scholar

[2] E.L. Rooy, Modern casting (Oct. 1992) 32

Google Scholar

[3] S.D. Felicelli, E. escoburde Obaldia and C.M. Pita, "Simulation of Hydrogen Porosity During Solidification," AFS Transactions, vol.115, (2007) pp.47-59

Google Scholar

[4] S.T. McClain, J.T. Berry and B. Dawsey, "A Study of Porosity and Pore Morphology in Aluminum A356.2 Step Castings," AFS Transactions, vol.111, (2003) pp.147-158

Google Scholar

[5] S.Poola, S. Felicelli, S. Leggett and J.T. Berry, "A Re-examination of Factors Affecting porosity Gradients in Unidirectionally Solidified Samples," AFS Transactions, vol.116, (2008) pp.157-168

Google Scholar

[6] F.M. St. John, W. Wu and J.T. Berry, " Effect of Thermal parameter on Ductility of Aluminum Alloys," AFS Transactions, vol.76, (1968) pp.645-654

Google Scholar

[7] Y.S. Kuo, "Mechanical Properties and Porosity Content of A201 Aluminum Alloy Castings in Different Cooling Rate Sand Molds", Advanced Materials Research , Vols. 154-155, (2011) pp.787-793

DOI: 10.4028/www.scientific.net/amr.154-155.787

Google Scholar

[8] C.Y. Lin, K.Murahami, and T.Okamoto," Internal and External Shrinkages in Undirectionally Solidified Al- 4.5wt﹪Cu Alloy," Materials Science and Engineering , (1989), A108, pp.265-270

DOI: 10.1016/0921-5093(89)90429-2

Google Scholar

[9] G.V. Kutumba Rao and V. Panchanathan, "End Chills Influence on Solidification Soundness of Al-Cu-Si (LM4) alloy Castings," AFS Transactions, vol.81, (1973) pp.110-114

Google Scholar

[10] Y.W. Lee, E. Chang and C.F. Chieu, "Modeling of feeding Behavior of Solidifying Al-7Si-0.3Mg Alloy Plate Casting," Metall. Trans. B, Vol.21B, (1990) pp.715-722

DOI: 10.1007/bf02654250

Google Scholar

[11] D.R. Irani and V. Kondic, "Casting and Mold Design Effects on Shrinkage, Porosity of Light Alloys," AFS Trans.Vol.77 (1969) pp.208-211

Google Scholar

[12] J.T. Berry, "Effects of solidification Conditions on Mechanical Behavior of Al Cast Alloys," AFS Trans. Vol. 78, (1970) pp.421-428

Google Scholar

[13] N.S. mahadevan and M.R. Seshadri, " Dimensioning of Risers for Long Freezing Range Aluminum Alloys," AFS Cast Metals Research Journal (June 1971) pp.77-82

Google Scholar

[14] E. Niyama, T. Uchida, M. Morikawa and Saito, "A Method of Shrinkage Prediction and Its Application to Steel casting Practice," J. of Japan Foundrymen's Society, Vol.54, No.8, (1982) pp.507-517

Google Scholar

[15] S.D. Pathak and O. Prabhaker, "Phenomenological Analysis of feeding in Aluminum Base Alloys," AFS Transactions Vol.92, (1984) 671-680.

Google Scholar