Creating Composite Materials Based on High-Nickel Alloys with the Use of a Plasma Arc at Current Reverse Polarity

Abstract

This paper presents the results of a study into the production of the layered composite material. The basis of the composite material is high-alloy corrosion-resistant steel and nickel alloy 10Cr18Ni10Ti 06Cr15Ni60Mo15. A promising method of manufacture of such structures is the use of a multi-layer deposition. The use of highly concentrated heat sources to simplify the manufacture of such structures. A study of the technological possibilities of manufacturing laminates plasma arc of direct action of reverse polarity. Plasma arc reversed polarity allows for a minimum penetration or dissolution of the base metal to provide a bimetal with unique combinations of properties. The laminate structure of the composite material obtained by using light microscopy is researched. It is shown that the application of reverse polarity plasma arc current produces defect-free laminates in surfacing of steels and alloys of different classes. The surfacing has a fine structure with the uniform transition from one layer to the homogeneous material and a clear interface between dissimilar materials. The mechanical tests performed on the specimens have shown that the material has good mechanical properties. It combines such indicators as high tensile strength and maintaining a high yield strength and elongation of the resultant laminate is 22%.