Characterization of boronized layers on Vanadis 6 tool steel. (3rd April 2021)

• Record Type: Journal Article
• Authors: Keddam, Mourad; Hudáková, Mária; Ptačinová, Jana; Moravčík, Roman; Gogola, Peter; Gabalcová, Zuzana; Jurči, Peter
• Is Part Of: Surface engineering. Volume 37:Number 4(2021)
• Page Start: 445
• Page End: 454
• Publication Date: 2021-04-03
• Subjects: Boronizing -- borides -- microstructure -- microhardness -- Charpy impact toughness -- Elemental redistribution -- phase constitution -- boronized layer growth; Surfaces (Technology) -- Periodicals; Coatings -- Periodicals; 620.4405
• DOI: 10.1080/02670844.2020.1781377
• Languages: English
• ISSNs: 0267-0844

Abstract

ABSTRACT: Vanadis 6 steel was boronized at temperatures from 950°C to 1050°C for durations from 0.75–10 h. The treatments produced layers with thickness from 4 to 133 μm, depending on the processing parameters. The layers' growth obeyed the parabolic growth law, and all the obtained boronized layers were two-phase (FeB + Fe2 B), with the presence of a small amount of chromium boride. The layer growth induces considerable redistribution of alloying elements in regions near the surface. FeB had microhardness ranging from 2100 to 2300 HV0.05, while the microhardness of Fe2 B was 1700–1900 HV0.05. The presence of boronized layers reduced the Charpy impact toughness of the steel by approximately 95%.