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A nanostructured layer was fabricated by using fast multiple rotation rolling (FMRR) on the surface of Ti-6Al-4V alloy, with grain size 10–19 nm in the top surface layer by means of XRD and TEM analysis. A deformation layer with thickness about 80 μm is clearly observed in the cross section of FMRR sample. The microhardness of the FMRR sample has an obvious change along the depth from about 368 HV...
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