Prediction of Microstructure and Porosity Formation of Practical Spheroidal Graphite Iron Castings

Hai Dong Zhao; Bai Cheng Liu

doi:10.4028/www.scientific.net/KEM.457.349

Paper Titles

Modeling of the Divorced Eutectic Solidification of Spheroidal Graphite Cast Iron
p.324

Simulation of the Ductile Iron Solidification Using a Cellular Automaton
p.330

Using Regression Analysis to Optimize the Combination of Thermal Conductivity and Hardness in Compacted Graphite Iron
p.337

Development of Ductile Iron Material, Simulation and Production Technology to Locally Strengthen Castings
p.343

Prediction of Microstructure and Porosity Formation of Practical Spheroidal Graphite Iron Castings
p.349

Some Key Points on High Strength Grey Iron Cylinder Block Production
p.357

Effect of Selected Alloying Elements on Mechanical Properties of Pearlitic Nodular Cast Irons
p.361

Plate Fracture of Nodular Cast Iron
p.367

Lubricated Friction and Wear Properties of P-B Bearing Flaky Graphite Cast Iron
p.374

HomeKey Engineering MaterialsKey Engineering Materials Vol. 457Prediction of Microstructure and Porosity...

Prediction of Microstructure and Porosity Formation of Practical Spheroidal Graphite Iron Castings

Abstract:

The mathematical model for microstructure formation and porosity prediction during solidification process of SG iron casting was established and applied to a practical brake housing casting. Quantitative microstructure analysis of specimens machined from the castings was compared with the simulation, and the two results are in acceptable agreement on nodule counts and size, pearlite fractions and hardness. It is indicated that the model can calculate the fraction of ferrite and pearlite more accurately, and specially can reflect the effect of both under-cooling during solidification and the nodules formed in eutectic period on the pearlite content. The present porosity prediction was compared with those of a former method and commercial software, which leads to that the current methods used for porosity prediction should be investigated and improved further.

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Periodical:

Key Engineering Materials (Volume 457)

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349-354

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.457.349

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Online since:

December 2010

Authors:

Hai Dong Zhao, Bai Cheng Liu

Keywords:

Brake Housing Component, Microstructure, Porosity, Simulation, Spheroidal Graphite Iron

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References

[1] D. M Stefanescu: Metall. Mater. Trans. A Vol 38A(2007), p.1433.

Google Scholar

[2] H. D. Zhao, B. C. Liu: ISIJ Inter. Vol 41(2001), p.986.

Google Scholar

[3] H. D. Zhao, B. C. Liu: Inter. J. Cast Metals Res. Vol 16 (2003), p.281.

Google Scholar

[4] H. D. Zhao, B. C. Liu: Inter. J. Cast Metals Res. Vol 20 (2007), p.42.

Google Scholar

[5] W. A. Oldfield: ASM Trans. Vol 59 (1966), p.945.

Google Scholar

[6] L. Nastac, D. M. Stefanescu: AFS Trans. Vol 84 (1995), p.329.

Google Scholar

[7] K. C. Su, I. Ohnaka, I. Yamusuchi, T. Fukusako, in: Physical Metallurgy of Cast Iron III, edited by H. Frederiksson and M. Hillert, MRS Symposia Proceedings, vol 34 (1985), p.181.

Google Scholar

[8] P. Magnin, R. Tridevi: Acta Metall. Mater., Vol 39(1991), p.453.

Google Scholar

[9] B. Sundman, B. Jansson, J. O. Andersson: CALPHAD Vol 9 (1985), p.150.

Google Scholar

[10] D. Venugopalan: Metall. Trans. A Vol 21A (1990), p.913.

Google Scholar

[11] J. Lacaze: Inter. J. Cast Metals Res. Vol 11 (1999), p.431.

Google Scholar

[12] A. Catalina, X. Guo, D. M. Stefanescu, in: Modeling of Casting, Welding and Advanced Solidification Processes Ⅷ (TMS), edited by B.G. Thomas and C. Beckermann. 1998, p.455.

Google Scholar

[13] L-E Bjorkegren: AFS Trans. Vol 85 (1996), p.139.

Google Scholar

[14] H. D. Zhao, B. C. Liu, I. Ohnaka: Inter. J. Cast Metals Res. Vol 15 (2002), p.315.

Google Scholar