Abstract
The influence of initial composition and the united solid back diffusion (SBD) effects on the calculated solidification paths (SP) of a series Al–Fe–Si ternary eutectic alloy were analyzed. The calculation programme was coupled with Thermo-Calc to calculate equilibrium for phase diagram information. The calculated results showed that initial compositions and SBD coefficient had important effects on SP of the Al–Fe–Si ternary eutectic alloys. The SP of the five Al–Fe–Si ternary alloys were divided into three categories: \( L \to (L + \beta ) \to (L + \alpha + \beta ) \to (L + \alpha + \beta + \text{Si}) \), \( L \to (L + \alpha ) \to (L + \alpha + \beta ) \to (L + \alpha + \beta + \text{Si}) \), and \( L \to (L + \alpha ) \to (L + \alpha + \text{Si}) \to (L + \alpha + \beta + \text{Si}) \). It was found that the volume fraction of eutectic phase decreases obviously with the increase of the SBD coefficient. Solute distribution coefficients of KFe and KSi in Al–0.08Fe–4.8Si alloy were also calculated and analyzed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Z.K. Liu, Y.A. Chang, Thermodynamic assessment of the Al–Fe–Si system. Metall. Mater. Trans. A 30, 1081–1095 (1999)
H.L. Chen, Q. Chen, Y. Du, J. Bratberg, A. Engström, Update of Al–Fe–Si, Al–Mn–Si and Al–Fe–Mn–Si thermodynamic descriptions. Trans. Nonferrous Met. Soc. China 24, 2041–2053 (2014)
T.P. Battle, Mathematical modelling of solute segregation in solidifying materials. Int. Mater. Rev. 37, 249–270 (1992)
C.Y. Ban, N. Liu, N. Wang, Y. Han, Q.X. Ba, J.Z. Cui, Influence of DC and AC magnetic fields on the solidification structures of Al–Fe–Si alloys. Rare Met. Mat. Eng. 40, 102–106 (2011)
D.V. Malakhova, D. Panahi, M. Gallerneault, On the formation of intermetallics in rapidly solidifying Al–Fe–Si alloys. CALPHAD 34, 159–166 (2010)
M. Shakiba, N. Parson, X.G. Chen, Effect of homogenization treatment and silicon content on the microstructure and hot work ability of dilute Al–Fe–Si alloys. Mater. Sci. Eng. A 619, 180–189 (2014)
J.A. Taylor, G.B. Schaffer, D.H. Stjohn, The role of iron in the formation of porosity in Al–Si–Cu-based casting alloys: part II. A phase-diagram approach. Metall. Mater. Trans. A 30, 1651–1655 (1999)
G.W. Zhao, D.M. Xu, M.H. Song, H.Z, Fu, D. Yong, Y.H. He, Thermo-Calc linked computations of solidification paths of ternary alloys using an extended unified microsegregation model. Acta Metall. Sin. 45, 956–963 (2009)
G.W. Zhao, C. Ding, X.S. Gu, X.C. Ye, C.H. Huang, M.C. Gu, Solidification path calculations of Al–Zn–Mg alloys in Al-rich corner. China Foundry 14, 443–448 (2017)
G.W. Zhao, X.C. Ye, W.J. Liu, M.C. Gu, Solidification path calculations of Al–Cu–Si alloys in Al-rich corner. Adv. Mater. Res. 503–504, 374–377 (2012)
G.W. Zhao, D.M. Xu, X.Z. Li, J.J. Guo, H.Z. Fu, Y. Du, Y.H. He, Thermo-Calc based multicomponent microsegregation model and solidification paths calculations. China Foundry 8, 269–274 (2011)
D. Yong, Y.A. Chang, B.Y. Huang, W.P. Gong, Z.P. Jin, H.H. Xu, Z.H. Yuan, Y. Liu, H.Y. He, F.Y. Xie, Diffusion coefficients of some solutes in fcc and liquid Al: critical evaluation and correlation. Mater. Sci. Eng. A 363, 140–151 (2003)
J.A. Taylor, G.B. Schaffer, D.H. Stjohn, The role of iron in the formation of porosity in Al–Si–Cu-based casting alloys: part I. Initial experimental observations. Metall. Mater. Trans. A 30, 1643–1650 (1999)
Acknowledgements
We thank a lot for the financial support from the National Natural Science Foundation of China (Grant Nos. 51604162 and 51604161). We wish to thank Harbin Institute of Technology for providing the phase diagram information and data used in this paper. And we thank the opening fund of Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance (2017KJX12).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zhao, G.W., Ding, C., Ye, X.C., Huang, C.H. (2018). Influences of Initial Composition and Solid Back Diffusion on the Solidification Path of Al–Fe–Si Alloys. In: Han, Y. (eds) Advances in Materials Processing. CMC 2017. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-0107-0_76
Download citation
DOI: https://doi.org/10.1007/978-981-13-0107-0_76
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-0106-3
Online ISBN: 978-981-13-0107-0
eBook Packages: EngineeringEngineering (R0)