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Metals 2017, 7(9), 349; doi:10.3390/met7090349

Effect of Welding Process on Microstructural and Mechanical Characteristics of Hardox 600 Steel

Department of Materials Science, Welding and Strength of Materials, Wroclaw University of Technology, Smoluchowskiego Street 25, 50-370 Wrocław, Poland
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Received: 17 July 2017 / Revised: 29 August 2017 / Accepted: 31 August 2017 / Published: 5 September 2017
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Abstract

In the article, the structure and selected mechanical properties of welded Hardox 600 steel are presented. It is shown that, after welding of this material in as-delivered condition (i.e., with post-martensitic structure), structures of lower wear resistance are created within heat-affected zones. These zones are over 80 mm wide, which makes them susceptible to uneven and fast wear in their intended applications. On the grounds of microscopic tests and hardness measurements, a thermal treatment of welded joints is suggested, consisting of quenching and low-temperature tempering of heat-affected zones. As a result of this treatment, the material structure in these areas becomes similar to the base material structure. Under laboratory conditions, the performed heat treatment does not cause any incompatibilities (cracks) in the welds. View Full-Text
Keywords: wear-resistant low-alloy martensitic steels; gas tungsten arc welding (GTAW); hardness changes; mechanical properties; structures wear-resistant low-alloy martensitic steels; gas tungsten arc welding (GTAW); hardness changes; mechanical properties; structures
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Konat, Ł.; Białobrzeska, B.; Białek, P. Effect of Welding Process on Microstructural and Mechanical Characteristics of Hardox 600 Steel. Metals 2017, 7, 349.

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