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MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Kinetic Processes in Materials
3.21 Spring 2001
S. M. Allen and W. C. Carter
Department of Materials Science and Engineering
Massachusetts Institute of Technology
77 Massachusetts Ave.
Cambridge, MA 02139
Problem Set 6: Due Wed. April 25, Before 5 P.M. in 13-5049



Exercise 6.1
Please complete problem 14.1 from KPIM.



Exercise 6.2
Please complete problem 14.2 from KPIM.



Exercise 6.3
Please complete problem 14.4 from KPIM.



Exercise 6.4
From the superimposed electron micrographs of Park and Allen (Lecture 22, p. 129), calculate an estimate (with an upper an lower bound) for the antiphase boundary (APB) mobility assuming an isotropic interfacial tension of 1 mJ/m$ {^2}$. In addition, estimate the time at which the cylindrical APB near the center of the image will disappear. Assume that $ t=0$ for the first of the two images shown. The second image was taken 62 seconds later.





W. Craig Carter 2001-04-18