Welding Parameters and their Influence on the Abrasion Resistance of Structural Steels at Elevated Temperatures

Harald Rojacz; Hannes Pahr; Susanne Baumgartner; Karl Adam; Markus Varga

doi:10.4028/www.scientific.net/KEM.721.461

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Welding Parameters and their Influence on the Abrasion Resistance of Structural Steels at Elevated Temperatures

Abstract:

In several industrial applications wear resistance of structural steels is required. Also enhanced temperature can occur when handling hot materials, e.g. in steel industry. Within this study a low alloyed structural steel (carbon steel S355) and a high temperature (HT) 9 % Cr steel ASTM A332 P92 were chosen for investigation. Repair welds with flux cored wires which are often required in applications were investigated, aiming on the role of interpass temperatures, the resulting effect of cooling conditions on the microstructure and their HT abrasion resistance. The influence of different microstructural parameters such as phase content, processing and the resulting temperature-hardness coherence on the wear resistance are evaluated within a high temperature abrasion test and a hot hardness test rig. Results indicate a strong influence of interpass temperature and heat input on the hot hardness and wear behaviour of welded structural steels.

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Periodical:

Key Engineering Materials (Volume 721)

Pages:

461-466

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.721.461

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Online since:

December 2016

Authors:

Harald Rojacz*, Hannes Pahr, Susanne Baumgartner, Karl Adam, Markus Varga

Keywords:

High Temperature Abrasion, Hot Hardness, Structural Steel, Welding

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* - Corresponding Author

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