Effects of Travel Speed on the Microstructure and Abrasion Resistance of Hardfacing Alloys Deposited with Composite Powder Particles and Solid Wire
Open Access
- 1 June 2020
- Vol. 10 (6), 740
- https://doi.org/10.3390/met10060740
Abstract
Composite powder particles (CPP) preset on base metals were fused with a solid wire to form a melt by the intense heat provided by the arc. An X-ray diffractometer, scanning electron microscopy, and energy dispersive spectrometer were employed to investigate the effects of travel speed on the microstructure and abrasion resistance. It was found that the microstructure of hardfacing alloys with CPP consists of γ-Fe, M7C3, and (Ti, V) C. With an increase in the travel speed from 3.5 to 6 mm/s, the microstructure with CPP changed from a hypoeutectic to hypereutectic structure. For hardfacing alloys with CPP, the increase in the travel speed not only contributed to a reduction of the dilution ratio of base metals, but also deliberately increased the volume fraction of primary M7C3-type carbides, which indicated that the bonding function executed on powder components led to a significant improvement in abrasion resistance and increased the utilization ratio of the alloying elements. The wear mechanism of hardfacing alloys included micro-cutting of abrasive particles and micro-spalling.This publication has 29 references indexed in Scilit:
- Chemical Composition and Morphology of M7C3 Eutectic Carbide in High Chromium White Cast Iron Alloyed with VanadiumISIJ International, 2012
- The effect of substitutional alloying elements on the impact wear rate of medium carbon steels related to delamination and quasi-nanometer wear mechanismsMaterials Science and Engineering: A, 2011
- Microstructure and Properties of Friction Surfaced Stainless Steel and Tool Steel CoatingsMaterials Science Forum, 2010
- Microstructure of the Fe-based hardfacing layers reinforced by TiC-VC-Mo2C particlesSurface and Coatings Technology, 2008
- Microstructure and wear behavior of (Cr,Fe)7C3 reinforced composite coating produced by plasma transferred arc weld-surfacing processSurface and Coatings Technology, 2006
- The effect of microstructure on abrasive wear of hardfacing alloysWear, 2005
- Wear behaviour of hardfacing deposits on cast ironWear, 2003
- Comparison of wear resistant MMC and white cast ironWear, 2003
- Effect of phase stability on the wear resistance of white cast iron at 800°CWear, 2002
- Sliding wear of graphite crystallized chromium white cast ironWear, 2001