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

• Autorzy: Urbańczyk-Gucwa A. , Brzezińska A. , Rodak K.

Identyfikatory

DOI

10.24425/amm.2018.125143

• Języki publikacji: EN

Abstrakty

EN

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 ε_ft = 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.

Słowa kluczowe

EN

CuCr0.6 alloy; severe plastic deformation; ultrafine-grains; STEM

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 4
• Strony: 2061--2066
• Opis fizyczny: Bibliogr. 25 poz., fot., rys., tab., wykr.

Twórcy

autor

Urbańczyk-Gucwa A.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 8 Krasińskiego Str., 40-019 Katowice, Poland

autor

Brzezińska A.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 8 Krasińskiego Str., 40-019 Katowice, Poland

autor

Rodak K.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, 8 Krasińskiego Str., 40-019 Katowice, Poland

Bibliografia

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Uwagi

EN

The work was supported by the National Science Centre of Poland (project No. UMO-2013/09/B/ST8/01695).