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Physical Metallurgy Recap Lecture #4 John Hanson 9/20/12

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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 Properties Properties

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Anisotropy and Material Properties PropertiesSingle vs. Poly Crystals

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Anisotropy and Material Properties PropertiesSingle vs. Poly Crystals Processing Random

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Anisotropy and Material Properties PropertiesSingle vs. Poly Crystals Processing Random Rolling Drawing

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Anisotropy and Material Properties PropertiesSingle vs. Poly Crystals Processing RandomPreferred Rolling Drawing

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Euler Angles Source: Euler Angles - Wikipedia

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Euler Angles Source: Euler Angles - Wikipedia

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13 My Work: Hydrogen Embrittlement In situ TEM straining is employed to further study “strongest links”

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14 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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15 SEM 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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