MSE405-505 2012C Final Exam

6 pts 3 5 for the dislocation

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Unformatted text preview: 2 (3) Indicate which way the dislocations will move (or not) as a result of the applied stress in each of the 8 drawings shown here. (8 pts) RHS$ RHS$ LHS$ LHS$ (4) Consider the reaction of two dislocations of Burgers vectors b1 = a / 2[110 ] and b2 = a[ 0 11] . Calculate the Burgers vector of the product dislocation assuming they react with each other. Would this reaction be energetically favorable? (6 pts) 3 (5) For the dislocation loop drawn below: (i) indicate the Burgers vector, (ii) indicate the character (RHS, LHS, direction of extra half- plane in case of edge) of the dislocation segments in each of the 4 boxes, (iii) indicate the direction that each segment will move under the shear stress shown, and (iv) w...
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This document was uploaded on 02/10/2014.

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