The influence of laser radiation action modes on the microhardness of metal-ceramic tracks in additive technologies

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Abstract

The present paper studies the effect of the laser radiation on geometrical and mechanical characteristics of formed tracks using the powder mixtures based on nickel alloys (60 weight % NiCrBSi) and tungsten carbide (40 weight % WC). It has been found that the mode of laser radiation highly influences the shape and mechanical characteristics (the keyhole mode or thermal-conductivity mode) in respect to the surface of the initial layer of the powder mixture. It is demonstrated that in the clad track at the thermal-conductive mode (the focusing mode Δf = ±20), the uniform distribution of ceramic parts is observed, and the maximal microhardness value is registered. It is found that the clad metal-ceramic structure has 4 - 5 times higher value of microhardness 850.4 HV0.1 than the substrate 178 HV0.1.

Original languageEnglish
Title of host publicationHigh Energy Processes in Condensed Matter, HEPCM 2019
Subtitle of host publicationProceedings of the XXVI Conference on High-Energy Processes in Condensed Matter, dedicated to the 150th anniversary of the birth of S.A. Chaplygin
EditorsVasily Fomin
PublisherAmerican Institute of Physics Inc.
Number of pages4
ISBN (Electronic)9780735418653
DOIs
Publication statusPublished - 26 Jul 2019
Event26th All-Russian Conference on High Energy Processes in Condensed Matter: Dedicated to the 150th Anniversary of the Birth of S.A. Chaplygin, HEPCM 2019 - Novosibirsk, Russian Federation
Duration: 3 Apr 20195 Apr 2019

Publication series

NameAIP Conference Proceedings
Volume2125
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference26th All-Russian Conference on High Energy Processes in Condensed Matter: Dedicated to the 150th Anniversary of the Birth of S.A. Chaplygin, HEPCM 2019
CountryRussian Federation
CityNovosibirsk
Period03.04.201905.04.2019

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