Abstract
Abstract The overall study objection is selection and optimization all available thermodynamic data required for using calculation of phase diagram (CALPHAD) technique within the Fe-C-Cr-Mn-Si-Ti system. Such data collected in the thermodynamic database can be used for predicting the phase constitution states of a given composition for Fe-based hardfacing materials, which often use in energy industry in order to increase the abrasion and impact wear resistance of equipment parts. In order to compare theroretical calculation results with experimental data, four different types of hardfacing were deposited using flux-cored arc welding. Microstructure and chemical composition of deposited layers was investigated using optical and scanning electron microscopy together with energy dispersive X-ray spectroscopy. Comparison of experimental and computed results shows that they are in good agreement in meaning of presence of all-important phase equilibrium regions. The developed database can be used for rational selection of hardfacing materials for energy industry equipment and reasonable choice of new alloying systems.
Highlights
Wear of energy equipment machine parts which caused by intensive abrasion wear together with high impact loads and aggressive environments is still an engineering and scientific problem
In renewable energy industry intensive wear of working surfaces is the main reason of failure and decreasing productivity of equipment in the processing of wood biomass waste into fuel briquettes
One of the most rational and effective way to reduce wear in such cases is the creation of surface layers with high mechanical properties by forming microstructure, comprising hard wear-resistant phases in sufficient amounts
Summary
Wear of energy equipment machine parts which caused by intensive abrasion wear together with high impact loads and aggressive environments is still an engineering and scientific problem. Most common equipment failures due to different types of wear take often place in oil and gas and coal industries during mining, transportation and processing of energy sources. Examples of such equipment are components of drilling rigs, coal crushers and conveyors, excavators, etc. One of the most rational and effective way to reduce wear in such cases is the creation of surface layers with high mechanical properties by forming microstructure, comprising hard wear-resistant phases in sufficient amounts. This can be achieved by using hardfacing technique with alloys consisting of element combinations which allow to provide required phase composition and microstructure
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