The influence of fractional powder composition and on the metal structure deposited by the plasma-powder method

Keywords

plasma-powder surfacing, adding powder, factional composition of powder, surfacing metal, macro- and microstructure, structural heredity, additive technologies.

Cite as

Pereplyotchikov Ye. F., Ryabtsev I. O., Babinets A. A., Ryabtsev I. I., and Lentugov I. P. The influence of fractional powder composition and on the metal structure deposited by the plasma-powder method. Physicochemical Mechanics of Materials. 2024. 60(5), 079-084.

https://doi.org/10.15407/pcmm2024.05.079

Abstract

The research results on the influence of the structure and fractional composition of adding powders on the structure of metal, surfaced by the plasma-powder method, are presented. It is shown that the temperature and structure of welding bath during such welding depend significantly on the quantity and fractional composition of adding powders. Therefore, the structural heredity in the adding powder–surfacing metal system, changes. The X-ray study confirms the inheritance of structure of adding powder of faction 200–250 μm by surfacing metal: the α- and γ-phase correlation in the powder and surfacing metal practically remains. However, when using powder of faction 80–125 μm under the same modes of surfacing, this correlation changes significantly, what is explained by a higher temperature of the welding bath metal when the initial structure of adding powder during crystallization of surfacing metal can be reconstructed.

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