Evolution of Mechanical Properties of an AA 6061 T6 Aluminum alloy Processed by Cold Working (CW)

Nano scale grain size reduction (UFG) is one of three suitable methods for improving the mechanical properties 6000 series aluminum alloys, by structural precipitation, strain hardening or cold work hardening. For working, several techniques are now available such as (ECAP - PC), (CEEA), (THP), (MM), (ARB), (CW). Cold compression high pressing (CW-CHP) can be applied in cycles depending on behavior material. The influence nonmetric grains produced a cylindrical rolling machine with four passes Sever plastic deformation ratios (3.5, 10,18.8 and 28%), alloy 6061 T6, was analyzed determining ultimate tensile strength (Rm), yield (Rp0.2, capacity SHC (Rm-Rp0.2), coefficient n', modulus 'work K' . increase rate sample sections consequently at first second pass, improves to maximum values, then presence crack initiation participates moderate decrease properties.