Application of the Continuous Rheoconversion Process (CRP) to Low Temperature HPDC-Part I: Microstructure

Qin Yue Pan; Stuart Wiesner; Diran Apelian

doi:10.4028/www.scientific.net/SSP.116-117.402

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HomeSolid State PhenomenaSolid State Phenomena Vols. 116-117Application of the Continuous Rheoconversion...

Application of the Continuous Rheoconversion Process (CRP) to Low Temperature HPDC-Part I: Microstructure

Abstract:

The continuous rheoconversion process (CRP) is a novel slurry-on-demand process that was developed at MPI/WPI in 2002. The process is based on a passive liquid mixing technique in which the nucleation and growth of the primary phase are controlled using a specially designed “reactor”. The reactor provides heat extraction, copious nucleation, and forced convection during the initial stage of solidification, thus leading to the formation of globular structures. This paper presents our recent work on the scale-up of the CRP for industrial applications. Specifically, we demonstrate an important application of the CRP to low temperature (low fraction solid) HPDC. In Part I of this paper, we present salient results on microstructural characterization of CRP processed castings vs. conventional die castings.

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Periodical:

Solid State Phenomena (Volumes 116-117)

Pages:

402-405

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.116-117.402

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Online since:

October 2006

Authors:

Qin Yue Pan, Stuart Wiesner, Diran Apelian

Keywords:

Continuous Rheoconversion Process, Microstructure, Semi-Solid Processing

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References

[1] D. Apelian et al.: Energy Efficient Near-net Shape Manufacturing: semi-solid processing routes, in the Proceedings of The MPMD Fourth Global Innovations Symposium: Energy Efficient Manufacturing Processes, Edited by I. Anderson, T. Marechaux, and C. Cockrill, published by TMS (The Minerals, Metals & Materials Society, 2003), pp.55-62.

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[2] M. Findon: Semi-Solid Slurry Formation via Liquid Metal Mixing, M. Sc. Thesis, Worcester Polytechnic Institute (2003).

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[3] Q.Y. Pan, M. Findon and D. Apelian: The Continuous Rheoconversion Process (CRP): A Novel SSM Approach, in the Proceedings of the Eighth International Conference on Semi-Solid Processing of Metals and Alloys, Limasol, Cyprus, September 2004 (published by NADCA, Wheeling, Illinois).

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[4] S. Wiesner, Q.Y. Pan and D. Apelian: Application of the Continuous Rheoconversion Process (CRP) to Low Temperature HPDC-Part II: Alloy Development & Validation (the 9 th S2P 2006 Conference) a b.

DOI: 10.4028/www.scientific.net/ssp.116-117.64

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