Paper Title:
Control of Microstructure by Laser Spot Heating
  Abstract

The present study tried to control grain structure in polycrystalline aluminum or titanium by means of a laser spot heating method as well as by a computer simulation technique. Monte Carlo simulation of spot heating was performed utilizing two-dimensional grain structure model composed of 200 x 200 sites with hexagonal cells. Grain growth proceeded preferentially in the higher temperature region and resulted in a large grain surrounded by small grains. This large grain tended to keep on growing during homogeneous heating after the spot heating, suggesting that the spot heating technique can fabricate a peculiar grain structure such as different grain size distribution and texture that are not realized by utilizing conventional uniform heating process. Laser spot heating utilizing a fiber-laser system realized heating of small area such as 30micorn diameter to bring about peculiar grain size distribution as calculated by the computer simulation.

  Info
Periodical
Solid State Phenomena (Volume 127)
Edited by
Masaaki Naka
Pages
337-342
DOI
10.4028/www.scientific.net/SSP.127.337
Citation
T. Shibayanagi, M. Tsukamoto, N. Matsuda, Y. Soga, N. Abe, M. Naka, "Control of Microstructure by Laser Spot Heating ", Solid State Phenomena, Vol. 127, pp. 337-342, 2007
Online since
September 2007
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Price
$32.00
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