High Pressure Wear Characteristics of Alloyed Ductile Cast Iron - Effect of Cu, Mn, Si and Mo

2005 ◽  
Vol 475-479 ◽  
pp. 4223-4226 ◽  
Author(s):  
Woong Ho Bang ◽  
C.S. Kang ◽  
J.H. Park ◽  
Kyu Hwan Oh
Keyword(s):  
High Pressure ◽  
Cast Iron ◽  
Ductile Cast Iron ◽  
Wear Properties ◽  
Severe Wear ◽  
Wear Characteristics ◽  
Mild Wear ◽  
Drastic Increase ◽  
Wear Mode ◽  
Wear Region

Under a high-pressure condition, the wear characteristics of alloyed and unalloyed ductile cast iron were investigated. Mn, Cu, Si and Mo were chosen as alloying elements, and their effects on mechanical properties of hardness and toughness were correlated with wear properties. In most cases, high-pressure wear of alloyed and unalloyed DCI were sequentially developed by mild wear region followed by severe wear. The transition of wear mode was indicated by the drastic increase of friction coefficient and wear rate. The observation of worn surface at mild-wear region suggested that wear had been concentrated at graphite phases, whereas severe wear mode damaged both of graphite and matrix. It was found that DCI alloyed with Si-Mo exhibited the most prominent resistance to the beginning of severe wear while the toughness of DCI was also a crucial factor.

scholarly journals Microstructure, Mechanical Properties and Wear Behavior of High-Velocity Oxygen-Fuel (HVOF) Sprayed (Cr3C2-NiCr+Al) Composite Coating on Ductile Cast Iron

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 840 ◽  
Author(s):  
Marzanna Ksiazek ◽  
Lukasz Boron ◽  
Adam Tchorz
Keyword(s):  
Cast Iron ◽  
Electron Microscope ◽  
High Velocity ◽  
Bending Strength ◽  
Wear Behavior ◽  
Ductile Cast Iron ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Alloy Matrix ◽  
X Ray

In the present work Cr3C2-NiCr powder containing Al particles was deposited on ductile cast iron with high-velocity oxy-fuel (HVOF) thermal spray coating technique. An investigation was conducted to determine the role of Al particles in the Cr3C2-NiCr coating produced with HVOF technique on microstructure, mechanical and wear properties in a system Cr2C3-NiCr coating/ductile cast iron. The microstructure of the HVOF-sprayed Cr3C2-NiCr+Al coating was characterized by light microscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and energy dispersive X-ray spectroscopy (EDS). Microstructure analysis reveals the formation of coating with low porosity, good adhesion to the substrate and dense structure with irregularly shaped particles of Al arranged in strips and finely fragmented Cr3C2 particles embedded in a nanocrystalline Ni-Cr alloy matrix. In addition, the results were discussed in reference to examination of bending strength considering cracking and delamination in the system of (Cr3C2-NiCr+Al)/ductile cast iron as well as microhardness and wear resistance of the coating. It was found that the addition of Al particles significantly increased resistance to cracking and wear behaviour in the studied system.

Microstructure and erosion wear properties of high chromium cast iron added nitrogen by high pressure in alkaline sand slurry

Wear ◽  
2021 ◽  
pp. 203655
Author(s):  
Liujie Xu ◽  
Fangfang Wang ◽  
Fugang Lu ◽  
Yucheng Zhou ◽  
Chong Chen ◽  
...  
Keyword(s):  
High Pressure ◽  
Cast Iron ◽  
Erosion Wear ◽  
Wear Properties ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

scholarly journals Structure and Mechanical Properties of HVOF Sprayed (WC-Co+Co) Composite Coating on Ductile Cast Iron

2019 ◽  
Vol 91 (3) ◽  
Author(s):  
Marzanna Książek ◽  
Łukasz Boron ◽  
Adam Tchorz ◽  
Ryszard Grzelka
Keyword(s):  
Cast Iron ◽  
Bending Strength ◽  
High Hardness ◽  
Scratch Test ◽  
Ductile Cast Iron ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Hvof Spraying ◽  
Compact Structure ◽  
Transmission Electron

An investigation was conducted to determine the role of Co particles in the WC-Co coating produced with the High Velocity Oxygen-Fuel (HVOF) spraying on microstructure, mechanical and wear properties in a system of type: WC-Co coating/ductlile cast iron. The microstructure of the thermal sprayed WC-Co+Co coating was characterized by scanning electron (SEM) and transmission electron (TEM) microscopes as well as the analysis of chemical and phase composition in microareas (EDS, XRD). For analysis of the quality and adhesion of coatings, the scratch–test was applied. It was found that as a result of the HVOF spray of WC-Co powders with the addition of Co particles, the coatings of low porosity, high hardness, a very good adhesion to the substrate, compact structure with partially molten Co particles and finely fragmented WC particles embedded in a cobalt matrix, coming to the size of nanocrystalline sizes were obtained. Moreover, the results were discussed in reference to examination of bending strength considering cracking and delamination in the system of (WC-Co+Co)/ductile cast iron as well as hardness and wear resistance of the coating. It was found that the addition of Co particles was significantly increase resistance to cracking and wear behaviour in the studied system.

WEAR PROPERTIES OF AUSTEHPERED ALLOYED DUCTILE CAST IRON GEARS

1986 ◽  
Vol 1 (1) ◽  
pp. 83-97
Author(s):  
B. Elsarnagawy ◽  
M. Gaafar ◽  
H. Madi ◽  
E. Makssoud
Keyword(s):  
Cast Iron ◽  
Ductile Cast Iron ◽  
Wear Properties
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