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2020 №10 (06) DOI of Article
10.37434/as2020.10.07
2020 №10 (08)

Automatic Welding 2020 #10
Avtomaticheskaya Svarka (Automatic Welding), #10, 2020, pp. 38-42

Influence of antimony on structure and mechanical properties of pre-euttectic copper-phosphoric alloys

S. V. Maksymova, A. N. Pisarev, P. V. Kovalchuk, V. V. Voronov
E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The results of investigations of pre-eutectic alloys of the Cu – P – Sb system are presented. The melting temperature interval was determined using high-temperature differential thermal analysis. It was found that antimony alloying of copper-phosphorus pre-eutectic alloy provides a decrease in the temperature of solidus and liquidus. On the basis of experimental and literature data, the surfaces of liquidus and solidus of ternary alloys were constructed. Using micro-X-ray spectral analysis, the chemical composition and a number of structural components of the Cu - 6.29P - 1.97Sb alloy were determined. The influence of antimony on technological and mechanical properties, as well as morphology of cast ternary pre-eutectic copper-phosphorous alloys is shown. 10 Ref., 2 Tabl., 6 Fig.
Keywords: cupper-phosphorous pre-eutectic alloys, antimony, temperature of solidus and liquidus, microstructure, strength


Received: 30.09.2020

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