Tutorial:
1. Indicate the (100) face of the unit cell of an fcc crystal (diagram provided).
2. Draw the trace of the (111) plane on the (100) face.
3. What other {111} plane shares this trace?
4. Draw the trace of the (11 1 ) plane on the (100) face.
5. What other {111} plane shares this trace?
6. What are the possible 1 110 Burgers vectors on the (11 1 ) plane?
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7. Which of these Burgers vectors will produce a slip trace on the (100) surface if glide
occurs on (11 1 ) with that Burgers vector?
8. For a tensile stress of 100 MPa along [001] which Burgers vectors correspond to
dislocations that experience a shear stress on the (11 1 ) plane in the b direction?
9. What are the magnitudes of those shear stresses?
10. Based on the answers to Questions 7 and 8 which slip system is active if you see a
slip trace corresponding to the trace of (11 1 ) on the (100) face of a crystal with an
applied tensile stress along [001].
11. Given that the slip system of Question 10 is active, onto what plane could the
dislocations cross-slip?
12. For the same applied stress, are there other 1 [110] ,{111} slip systems that could
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produce a trace on the (100) surface parallel to that produced by the slip system found in
Question 10?
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