Journal of Materials Engineering and Performance

, Volume 27, Issue 8, pp 4069–4076 | Cite as

Microstructure and Wear Resistance of FeCrBSi Plasma-Sprayed Coating Remelted by Gas Tungsten Arc Welding Process

  • Dong Tianshun
  • Zheng Xiaodong
  • Li Yalong
  • Li GuoluEmail author
  • Zhou Xiukai
  • Wang HaidouEmail author


Herein, an FeCrBSi coating was fabricated via plasma spray on AISI1045 steel, and subsequently, a gas tungsten arc welding (GTA) process was employed to remelt the coating. The microstructure, microhardness, fracture toughness and surface roughness of the coating before and after remelting were investigated, as well as the wear resistance was tested by a UMT-3-type sliding wear apparatus. The results showed that, upon remelting, most defects in the as-sprayed coating were effectively eliminated, the surface roughness decreased by 43%, and the coating–substrate interface bonding changed from mechanical to metallurgical. The phase composition of the as-sprayed coating was primarily α-Fe and a small amount of hard Fe3B phase, while the remelted coating consisted of α-Fe and (Fe,Cr)23C6 and a small quantity of CrB. In addition, remelting the coating was found to induce a 287.6% increase in the fracture toughness, a 33.4% increase in the average microhardness, and a 47.5% decrease in the wear volume, while the failure mechanism changed from abrasive wear to fatigue wear upon remelting. Therefore, GTA remelting of plasma-sprayed coating was found to be a feasible method to obtain a coating with good wear resistance.


FeCrBSi GTA remelting microstructure plasma spray wear resistance 



This work was financially supported by the National Natural Science Foundation of China (Nos. 51675158, 51535011) and the Natural Science Foundation of Hebei Province (No. E2016202325). We thank Sara Maccagnano-Zacher, Ph.D., from Liwen Bianji, Edanz Editing China (, for editing the English text of a draft of this manuscript.


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Copyright information

© ASM International 2018

Authors and Affiliations

  1. 1.School of Material Science and EngineeringHebei University of TechnologyTianjinChina
  2. 2.National Key Laboratory for RemanufacturingAcademy of Armored Forces EngineeringBeijingChina

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