Direct Laser Deposition Method of Multilayer Coating on High Manganese, Non-Magnetic Steel

Abstract:

Metal structures, pipelines and dies are used for a long time wear out and deteriorate. At the end of the service life it is necessary to repair or replace the metal component. The article discusses the method of applying nickel super-alloy Inconel 625 by direct laser deposition on high-alloy austenitic Mn-Cr steel. The article discusses the method of applying nickel super-alloy Inconel 625 by direct laser deposition on high-alloy austenitic Mn-Cr steel. Inconel 625 alloy is used as a buffer layer or repair material. But there is a high probability of cracks in the cladding material and the substrate material when the DLD method is used. One of the frequent causes of these cracks is high tensile stresses and oxides. To eliminate defects, the substrate was heated with resistive heaters to 400 °C. The result was a defect-free adhesion of the cladding material and the substrate. The hardness of the substrate before and after heating has not changed (312 HV 0,5/10). After heating the hardness of the substrate in the heat-affected zone decreased by 14% and was equal to 267 HV 0,5/10. The hardness of the cladding decreased by 12% and was equal to 230 HV 0,5/10.

• Periodical: Materials Science Forum (Volume 1022)
• Pages: 97-104
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1022.97
• Online since: February 2021
• Authors: Dmitriy V. Masaylo, Sergei D. Igoshin*, Alexey V. Orlov, Anatoly A. Popovich
• Keywords: Additive Technology, Automated Production, Direct Laser Deposition, Non-Magnetic Steel, Powder Metallurgy

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