TY - JOUR N2 - The samples of the CuCr0.6 alloy in the solution treated and additionally in aging states were severely plastically deformed by compression with oscillatory torsion (COT) method to produce ultrafine – grained structure. The samples were processed by using process parameters as: frequency of torsion (f = 1.6 Hz), compression speed (v = 0.04 mm/s), angle torsion (α = ±6°), height reduction (Δh = 7 mm). The total effective strain was εft = 40. The microstructure has been analyzed by scanning transmission electron microscope (STEM) Hitachi HD-2300A equipped with a cold field emission gun at an accelerating voltage of 200 kV. The quantitative microstructure investigations as disorientation angles were performed using a FEI INSPECT F scanning electron microscope (SEM) equipped with a cold field emission gun and a electron backscattering diffraction (EBSD) detector. The mechanical properties were determined using MST QTest/10 machine equipped with digital image correlation (DIC). The COT processed alloy previously aged at 500°C per 2h shows high mechanical strength, ultimate tensile strength UTS: 521 MPa and yield tensile strength YS: 488 MP attributed to the high density of coherent precipitates and ultrafine grained structure. L1 - http://journals.pan.pl/Content/109184/PDF/AMM-2018-4-65-Urbanczyk.pdf L2 - http://journals.pan.pl/Content/109184 PY - 2018 IS - No 4 EP - 2066 DO - 10.24425/amm.2018.125143 KW - CuCr0.6 alloy KW - Severe plastic deformation KW - ultrafine-grains KW - STEM A1 - Urbańczyk-Gucwa, A. A1 - Brzezińska, A. A1 - Rodak, K. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 63 DA - 2018.12.12 T1 - Influence of Solid Solution and Aging Treatment Conditions on the Formation of Ultrafine-Grained Structure of CuCr0.6 Alloy Processed by Compression with Oscillatory Torsion SP - 2061 UR - http://journals.pan.pl/dlibra/publication/edition/109184 T2 - Archives of Metallurgy and Materials ER -