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On the Numerical Analysis of Different Controlling Parameters During the Solidification of Aluminum-Carbon Fiber Composite With Thermal Management

[+] Author Affiliations
R. S. Amano, E. K. Lee, P. K. Rohatgi, H. G. Seong, V. K. Tiwari

University of Wisconsin at Milwaukee, Milwaukee, WI

Paper No. IMECE2002-32913, pp. 269-276; 8 pages
doi:10.1115/IMECE2002-32913
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 5
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-3636-3 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

Metal matrix composites (MMCs) consist of two or more distinct phases, namely a continuous metallic phase known as the matrix and a reinforcing phase. MMCs offer advantages over traditional monolithic materials of enhanced material properties such as strength, thermal/electrical conductivity, toughness, modulus of elasticity, wear resistance, etc. It is desirable to shorten the solidification time when producing MMCs because the higher the cooling rate, the finer the microstructures of the MMCs will be. The present research investigates MMCs processed in a novel way, in which the ends of the reinforcement phase are extended outside the liquid matrix envelope and cooled by a heat sink. By doing so, heat extraction in the axial direction greatly reduces the solidification time compared with conventional way of making MMCs. Due to the complicated geometry of the calculation domain, analytical result is very difficult to obtain. Therefore, attempts have been made to solve the energy equation by finite difference numerical method for a 2-D axis-symmetric model involving phase change. The calculation domain is based on the proposed experimental configuration by Rohatgi et al. [1]. In this paper, the effects of selected parameters which can influence the process of solidification are examined. These parameters include the volume fraction, the thermal conductivity of the reinforcing phase, and the heat sink temperature.

Copyright © 2002 by ASME

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