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The evolution of microstructure and texture of a nanocrystalline Pd–10at.% Au alloy (initial grain size 16nm) subjected to severe plastic deformation by high-pressure torsion (HPT) at room temperature is investigated by X-ray line profile analysis and X-ray microdiffraction, respectively. In addition, changes in the microhardness are measured and the texture is modeled. During HPT the microstructure...
Niobium and tantalum are two body centered cubic metals with very different elastic anisotropy. The A z =2×c 44 /(c 11 −c 12 ) constant for Nb and Ta is 0.51 and 1.58, respectively. The submicron grain-size state of the two refractory metals was produced by the method of high-pressure torsion with different pressure values of 2 and 4GPa for Nb, and 4 and 8GPa for Ta,...
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