Microstructure and properties of tin bronzes produced by the SPD method

• Autorzy: Sobota J. , Rodak K. , Nowak M.

Identyfikatory

DOI

10.24425/amm.2019.126223

• Języki publikacji: EN

Abstrakty

EN

In this article the structural and mechanical properties of grain refinement of Cu-Sn alloys with tin content of 10%, 15% and 20% using the KOBO method have been presented. The direct extrusion by KOBO (name from the combination of the first two letters of the names of its inventors – A. Korbel and W. Bochniak) method employs, during the course of the whole process, a phenomenon of permanent change of strain travel, realized by a periodical, two-sided, plastic metal torsion. Moreover the aim of this work was to study corrosion resistance. The microstructure investigations were performed using an optical microscope Olimpus GX71, a scanning electron microscope (SEM) and a scanning transmission electron microscope (STEM). The mechanical properties were determined with INSTRON 4505/5500 machine. Corrosion tests were performed using «Autolab» set – potentiostat/galvanostat from EcoChemie B.V. with GPES software ver. 4.9. The obtained results showed possibility of KOBO deformation of Cu-Sn casting alloys. KOBO processing contributed to the refinement of grains and improved mechanical properties of the alloys. The addition of tin significantly improved the hardness. Meanwhile, with the increase of tin content the tensile strength and yield strength of alloys decrease gradually. Ductility is controlled by eutectoid composition and especially δ phase, because they initiate nucleation of void at the particle/matrix interface. No significant differences in the corrosion resistance between cast and KOBO processed materials were found.

Słowa kluczowe

EN

tin bronzes; KOBO; microstructure; mechanical properties; corrosion

• 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: 2019
• Tom: Vol. 64, iss. 1
• Strony: 95--102
• Opis fizyczny: Bibliogr. 24 poz., fot., rys., tab.

Twórcy

autor

Sobota J.

• Institute of Non-Ferrous Metals, 5 Sowińskiego Str., 44-100 Gliwice, Poland

autor

Rodak K.

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

autor

Nowak M.

• Institute of Non-Ferrous Metals, 5 Sowińskiego Str., 44-100 Gliwice, Poland

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Uwagi

EN

1. The study was conducted within the scope of Statutory Work of Institute of Non-Ferrous Metals "Development of basic engineering for production of tin bronze rods with increased tin content using severe plastic deformation”.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).