Wear Behavior of Hardfacing Deposits on 3.5 % Chromium Cast Steel

Abstract:

The objective of this research is to develop the welding procedure for multilayer hardfacing of 3.5 %chromium cast steel and study wear behavior of hardfacing deposits. Austenitic stainless steel and martensitic hardfacing electrodes were selected as buffer and hardfacing, respectively. Four types of welding procedures were investigated, using shielded metal arc welding (SMAW) process. Three different preheatings were applied in this study. Characteristic of the macro, microstructure and worn surface deposits was investigated by optical microscope. The hardfacing deposits were also determined by the dry sand rubber wheel machine according to procedure A of the ASTM G65 standard. The results indicated that the multilayer hardfacing with and without preheating revealed no crack or defect in the Heat Affected Zone (HAZ) and other regions. The wear resistance of hardfacing presented a little difference. The best abrasive wear resistance was obtained from sample without preheating. This was due to the full martensitic microstructure of the hardfacing.

• Periodical: Key Engineering Materials (Volume 658)
• Pages: 167-171
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.658.167
• Online since: July 2015
• Authors: Buntoeng Srikarun, Prapas Muangjunburee*
• Keywords: 3.5% Chromium Cast Steel, Abrasive Wear, Buffer, Hardfacing

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