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Fabrication of multiple carbide particles reinforced Fe-based surface hardfacing layer produced by gas tungsten arc welding process |
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| Authors: | Wang Xinhong Cheng Lin Zou Zengda |
| Affiliation: | a Key Laboratory for Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China b Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China c School of Mechanical Engineering, Shandong University, Jinan 250061, China |
| Abstract: | In this paper, a multiple carbide particle reinforced Fe-based surface coating has been in situ synthesized by gas tungsten arc welding (GTAW) melting a precursor mixture of graphite, ferrotitanium (Fe-Ti) and ferrovanadium (Fe-V) alloy powders on AISI 1020 steel substrate. The microstructure and wear properties of the Fe-based surface hardfacing layers were investigated by means of a scanning electron microanalysis (SEM), X-ray diffractometer (XRD) and wear tester. The results showed that (Ti,V)C multiple carbide particle and TiC carbide particle can be synthesized via reaction of Fe-Ti, Fe-V and graphite during GTAW melting process. The selection area diffraction pattern (SADP) analysis indicated that (Ti,V)C crystallizes with the cubic structure, which indicates that (Ti,V)C carbides were multiple carbides with V dissolved in the TiC structure. The Fe-based surface hardfacing layer reinforced by multiple carbides gave an excellent wear resistance and appeared a mild wear with fine scratches. |
| Keywords: | Multiple carbides Gas tungsten arc welding Wear properties Surface hardfacing layer |
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