Rapid Solidification Processing of Discontinuously-Reinforced Metal Matrix Composites

The interaction of solidification fronts with embedded heterogeneities, such as particles and living cells, is an important physical ingredient underlying the successful solidification processing of some materials. An example in the first category is the processing of metal-matrix composites (MMCs) where solidifying metal dendrites interact with ceramic reinforcements [1–3]. Processing of biological material, such as cells and tissue for cryopreservation [4], falls into the second category. In each case, the evolving solidification microstructure interacts in complex ways with the embedded particle.

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SOLIDIFICATION PROCESSING OF METAL - MATRIX COMPOSITES

Proceedings of the International Symposium On: Advanced Structural Materials ◽

10.1016/b978-0-08-036090-4.50009-4 ◽

1989 ◽

pp. 43-51 ◽

Cited By ~ 8

Author(s):

P.K. Rohatgi ◽

R. Asthana

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Matrix Composites ◽

Solidification Processing

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The solidification processing of metal-matrix composites: The Rohatgi Symposium

JOM ◽

10.1007/s11837-006-0236-0 ◽

2006 ◽

Vol 58 (11) ◽

pp. 92-94 ◽

Cited By ~ 5

Author(s):

Nikhil Gupta ◽

K. G. Satyanarayana

Keyword(s):

Metal Matrix Composites ◽

Metal Matrix ◽

Matrix Composites ◽

Solidification Processing

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Solidification Processing of Magnesium Based In-Situ Metal Matrix Composites by Precursor Approach

10.5772/intechopen.94305 ◽

2020 ◽

Author(s):

Nagaraj Chelliah Machavallavan ◽

Rishi Raj ◽

M.K. Surappa

Keyword(s):

Metal Matrix Composites ◽

Chemical Reaction ◽

Metal Matrix ◽

Interfacial Strength ◽

Matrix Composites ◽

Polymer Precursor ◽

Structure Property ◽

Solidification Processing ◽

Ceramic Phase

In-situ magnesium based metal matrix composites (MMCs) belong to the category of advanced light weight metallic composites by which ceramic dispersoids are produced by a chemical reaction within the metal matrix itself. In-situ MMCs comprised uniform distribution of thermodynamically stable ceramic dispersoids, clean and unoxidized ceramic-metal interfaces having high interfacial strength. In last two decades, investigators have been collaborating to explore the possibility of enhancing the high temperature creep resistance performance in polymer-derived metal matrix composites (P-MMCs) by utilizing polymer precursor approach. A unique feature of the P-MMC process is that since all constituents of the ceramic phase are built into the polymer molecules itself, there is no need for a separate chemical reaction between the host metal and polymer precursor in order to form in-situ ceramic particles within the molten metal. Among the different polymer precursors commercially available in the market, the silicon-based polymers convert into the ceramic phase in the temperature range of 800–1000°C. Therefore, these Si-based polymers can be infused into molten Mg or Mg-alloys easily by simple stir-casting method. This chapter mainly focuses on understanding the structure–property correlation in both the Mg-based and Mg-alloy based in-situ P-MMCs fabricated by solidification processing via polymer precursor approach.

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