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Computer Aided Cooling Curve Analysis and Microstructure of Cerium Added Hypereutectic Al–Si (LM29) Alloy

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Abstract

Thermal analysis of LM29 alloy and Ce added LM29 alloys was carried out. The effect of cerium addition on solidification parameters and microstructural features of hypereutectic Al-Si (LM29) alloy was studied using Newtonian analysis technique. Thermal analysis parameters such as primary and eutectic phase nucleation and solidus temperatures were determined. The addition of Ce to LM29 alloy decreased the nucleation temperature of primary silicon and eutectic silicon. The microstructural examination of Ce added LM29 alloys revealed the presence of a polyhedral shaped Al–Si–Ce compound that might have caused the refinement of primary and eutectic silicon. The dendrite coherency point temperature of LM29 alloy was found to be suppressed on addition of Ce.

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Acknowledgments

One of the authors (VV) thanks National Institute of Technology Karnataka for the Research Scholarship. Authors acknowledge the help received from Mr. Sathish and Mr. Dinesha, Technicians, Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka (NITK), Surathkal, during the casting process. Authors also thank Ms. Rashmi Banjan, SEM operator, National Institute of Technology Karnataka (NITK), Surathkal, for her assistance during scanning electron microscopy.

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  1. Department of Metallurgical and Materials Engineering, National Institute of Technology Karnataka, Srinivasnagar, Surathkal, Mangalore, 575025, India

    V. Vijeesh & K. Narayan Prabhu

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  1. V. Vijeesh
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  2. K. Narayan Prabhu
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Correspondence to K. Narayan Prabhu.

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Vijeesh, V., Prabhu, K.N. Computer Aided Cooling Curve Analysis and Microstructure of Cerium Added Hypereutectic Al–Si (LM29) Alloy. Trans Indian Inst Met 67, 541–549 (2014). https://doi.org/10.1007/s12666-014-0379-6

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  • DOI: https://doi.org/10.1007/s12666-014-0379-6

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