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   COLLOQUIUM OF THE LABORATORY FOR COMPUTER DESIGN OF MATERIALS
                   School of Computational Sciences
                           (CSI 898-Sec 001)
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        Modeling of Diffusion Processes in Metals and Alloys

                          W. J. Boettinger
 
  Metallurgy Division, Materials Science and Engineering Laboratory
   National Institute of Standards and Technology, Gaithersburg, MD

The continual improvement of the properties of alloys is, in part, 
related the mutual solubility of metals in the solid and liquid 
states. During metallurgical processing (casting, heat treatment), 
local changes in composition are caused by phase transformation 
(solidification, solid state precipitation). These local changes are 
governed by diffusion, which is thus an important part of the modeling 
of metallurgical processes.  The lecture will address how diffusion is 
modeled in binary and ternary alloys, in single  and multiphase 
materials. The concept of the diffusion path will be discussed and its 
application to the prediction of reactions between dissimilar 
materials such as solder on copper and titanium on gallium nitride 
semiconductor.

			Monday , February 3, 2003
                              4:30 pm
                        Room 206, Science & Tech. I

Refreshments will be served at 4:15 PM.
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Find the schedule at http://www.csi.gmu.edu/lcdm/seminar/schedule.html