Enhanced microhardness in nanocomposite Ti60Cu14Ni12Sn4Ta10 processed by high pressure torsion
作者： A Concustell , J Sort , TG Woodcock , A Gimazov , S Surinach
DOI: 10.1016/J.INTERMET.2006.01.030
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摘要: Abstract Nanostructured Ti 60 Cu 14 Ni 12 Sn 4 Ta 10 alloys have been obtained by (i) arc-melting (AM) the pure elements and (ii) AM followed severe plastic deformation induced high pressure torsion (HPT). Scanning electron microscopy (SEM) reveals that specimen consists of a dendrite–eutectic structure. After HPT, center disks exhibits microstructure similar to but with strongly deformed dendrites lamellae become refined intermixed as distance from disk increases. At edge HPT dendritic/eutectic morphology is no longer observed SEM. The Vickers microhardness higher in compared samples. This result discussed terms peculiar morphologies nanostructures achieved after each processing route.
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