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As concerns about global CO2 emissions grow, there exists a need for widespread commercialization of lower emission building materials such as geopolymers. The commercialization of geopolymers is currently impeded by the high variability of the materials used for their synthesis and limited knowledge of the interrelationships between mix design variables.To overcome these barriers, this work demonstrates...
Gamma titanium aluminides (γ-TiAl) of compositions Ti-(42, 48, and 52)at.% Al were deformed to strains >100% by equal channel angular extrusion (ECAE) at temperatures <1100 o C with the objective of producing sub-micrometer grains by either concurrent or post deformation recrystallization. ECAE processing produced 1-2 μm grains-an order of magnitude smaller than in conventionally processed...
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