2018 №05 (02) DOI of Article
2018 №05 (04)

The Paton Welding Journal 2018 #05
TPWJ, 2018, #5, 12-16 pages
Properties of steel-copper bimetal produced by brazing in autonomous vacuum

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       #5, 2018 (May)
Pages                      12-16
I.P. Serebryanik, M.G. Atroshenko, M.A. Poleshchuk, A.L. Puzrin And A.V. Shevtsov
E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
It is determined that brazing of copper on steel under conditions of autonomous vacuum in a contact zone promotes formation of an area of increased microhardness, which is eliminated by standard for steel heat treatment. It is shown that content of carbon in steel does not have significant effect on properties of a copper–steel transition zone. It is stated that interaction of liquid copper with steel does not result in formation of cracks in the joining zone under conditions of brazing in autonomous vacuum. It is determined that increase of time of contact of liquid copper with steel results in formation of brittle structures that decreases joint impact toughness. Failure of steel-copper joint takes place along copper in static tensile tests. At that strength properties of brazed layer exceed reference data for strained and annealed copper. 7 Ref., 2 Tables, 9 Figures.
Keywords: brazing of copper on steel in autonomous vacuum, steel-copper bimetal, structure and properties of transition zone
Received:                27.03.18
Published:               07.05.18

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