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

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Presentation transcript:

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

3D to 2D Projections 100 Stereographic Projection (Cubic Crystal)

3D to 2D Projections 100 Stereographic Projection (Cubic Crystal)

3D to 2D Projections 100 Stereographic Projection (Cubic Crystal)

3D to 2D Projections 48 symmetric triangles Studying anisotropies requires measuring over 4π/48 rather than the entire sphere

Anisotropy and Material Properties Properties

Anisotropy and Material Properties PropertiesSingle vs. Poly Crystals

Anisotropy and Material Properties PropertiesSingle vs. Poly Crystals Processing Random

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

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

Euler Angles Source: Euler Angles - Wikipedia

Euler Angles Source: Euler Angles - Wikipedia

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

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

15 SEM image overlaid with EBSD data My Work: Hydrogen Embrittlement Inconel 725

Pure Nickel SEM image overlaid with EBSD data My Work: Hydrogen Embrittlement

Pure Nickel SEM image overlaid with EBSD data My Work: Hydrogen Embrittlement

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