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8/12/2019 SchmidLaw Slip
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8/12/2019 SchmidLaw Slip
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
http://video.google.com/videosearch?q=dislocation+slip&hl=en&emb=0&aq=f#
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
Close packed
plane
Non-close-packed
plane
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
r =CosCos
1A
Fr
r =
Slip
direction
Normal to
Slip plane
0A
F=
A1=Area of
Slip plane
F
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FCC metal
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Stress-strain curve of single
and polycrystalline copper
Slip bands in polycrystalline
aluminum grains
Dislocations piled up
against grain boundaries
in stainless steel
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
Strain Hardening
Stress-Strain curves of 1018 steel
1018-Cold Rolled
1018-Annealed
http://video.google.com/videosearch?q=rolling&hl=en&emb=0&aq=f#emb=0&hl=en&q=cold+rolling&view=3
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3 important strategies for increasing the strength:
http://www.youtube.com/watch?v=QVJ1DOIDl2A
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http://www.mse.ncsu.edu/zhu Materials Science & Engineering
Example Problems: 6.9, 6.10
Regular Problems, Download from web
Reading assignment: section 7.1-7.2