Influence of Crystallographic Texture on Young's Modulus of Various Alloy 82H Welds

Abstract

Electron backscatter diffraction (EBSD) was employed to analyze the microstructure and texture of four different Alloy 82H gas tungsten arc welds that previously underwent static and dynamic modulus testing. The Young's moduli were shown to differ among the various welds, but also within each weld, dependent upon the direction measured. These differences were attributed to anisotropy of the crystallographic textures, which were described using inverse pole figures with respect to each of the weld's three orthogonal axes. The Young's modulus demonstrated a strong correlation with the texture, consistent with single crystal experiments. Sample directions containing a large population of {100} orientations had the lowest Young's modulus, while those with {111} grains possessed the highest. Microstructures with {110} textures were closer to the average modulus value of 207 GPa (30.0 Msi). X-ray diffraction texture measurements on four samples were used to verify the EBSD results.

Structure and hardness of B2 ordered refractory AlNbTiVZr0.5 high entropy alloy after high-pressure torsion

“…In addition, it is well established that HPT produces a strong simple shear texture in metals and alloys [52,53]. Changes in texture can also contribute to mechanical properties including elastic modulus of the B2 phase after HPT [54,55].…”

Hydrogen-induced brittle fracture in nickel based alloy 82 weld metal

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