Physical Metallurgy Recap Lecture #4
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Transcript of Physical Metallurgy Recap Lecture #4
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Physical Metallurgy RecapLecture #4
John Hanson9/20/12
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3D to 2D Projections
100 Stereographic Projection (Cubic Crystal)
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3D to 2D Projections
100 Stereographic Projection (Cubic Crystal)
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3D to 2D Projections
100 Stereographic Projection (Cubic Crystal)
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3D to 2D Projections
48 symmetric triangles
Studying anisotropies requires measuring over 4π/48 rather than the entire sphere
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Anisotropy and Material PropertiesProperties
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Anisotropy and Material PropertiesProperties Single vs. Poly Crystals
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Anisotropy and Material PropertiesProperties Single vs. Poly Crystals
Processing
Random
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Anisotropy and Material PropertiesProperties Single vs. Poly Crystals
Processing
Random
RollingDrawing
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Anisotropy and Material PropertiesProperties Single vs. Poly Crystals
Processing
Random Preferred
RollingDrawing
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Euler Angles• Series of three rotations:
Source: Euler Angles - Wikipedia
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Euler Angles• Series of three rotations:
Source: Euler Angles - Wikipedia
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My Work: Hydrogen Embrittlement• In situ TEM straining is
employed to further study “strongest links”
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• In situ TEM straining is employed to further study “strongest links”
• Prior to straining, EBSD is used to map grain structure of sample
100 μm
SEM image
My Work: Hydrogen Embrittlement
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15SEM image overlaid with EBSD data
My Work: Hydrogen Embrittlement• Inconel 725
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• Pure Nickel
SEM image overlaid with EBSD data
My Work: Hydrogen Embrittlement
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• Pure Nickel
SEM image overlaid with EBSD data
My Work: Hydrogen Embrittlement
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Questions/comments?