scholarly journals Preparation and wear properties of high-vanadium alloy composite layer

Friction ◽  
2021 ◽  
Author(s):  
Fangfang Wang ◽  
Liujie Xu ◽  
Shizhong Wei ◽  
Xi Wang ◽  
Chong Chen ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Cast Alloy ◽  
Composite Layer ◽  
High Hardness ◽  
Residual Austenite ◽  
Alloy Layer ◽  
Vanadium Alloy ◽  
Alloy Composite ◽  
Wear Properties ◽  
Vanadium Carbides

AbstractA high-vanadium alloy composite layer was prepared on the surface of a carbon steel using cast composite technology, and the wear properties of the composite layer were investigated. The results showed that the microstructure of the composite layer was composed of primary vanadium carbides (VC), flake martensite, residual austenite, and fine VC. The hardness of the cast alloy layer was 63 HRC. The abrasive wear resistance and impact wear resistance were increased by 60% and 26%, respectively, compared with those of high-chromium cast iron. The excellent wear resistance of the cast alloy layer is attributed to the high-hardness primary vanadium carbide and the large number of fine secondary vanadium carbides precipitated out of the cast alloy layer.

Phase, microstructure, and wear behavior of Al2O3-reinforced Fe–Si alloy-based metal matrix nanocomposites

2019 ◽  
Vol 234 (3) ◽  
pp. 467-480
Author(s):  
Akash Saxena ◽  
Neera Singh ◽  
Bhupendra Singh ◽  
Devendra Kumar ◽  
Kishor Kumar Sadasivuni ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Metal Matrix ◽  
Alloy Composition ◽  
Wear Behavior ◽  
High Hardness ◽  
Industrial Applications ◽  
High Wear Resistance ◽  
Wear Properties ◽  
Metal Matrix Nanocomposites ◽  
Matrix Nanocomposites

In the present work, phase, microstructure, and wear properties of Al2O3-reinforced Fe–Si alloy-based metal matrix nanocomposites have been studied. Composites using 2 wt.% and 5 wt.% of Si and rest Fe powder mix were synthesized via powder metallurgy and sintered at different temperature schedules. Iron–silicon alloy specimens were found to have high hardness and high wear resistance in comparison to pure iron specimens. Addition of 5 wt.% and 10 wt.% alumina reinforcement in Fe–Si alloy composition helped in developing iron aluminate (FeAl2O4) phase in composites which further improved the mechanical properties i.e. high hardness and wear resistance. Formation of iron aluminate phase occurs due to reactive sintering between Fe and Al2O3 particles. It is expected that the improved behavior of prepared nanocomposites as compared to conventional metals will be helpful in finding their use for wide industrial applications.

Friction Properties of Ni-P-SiC Composite Plating in Water

2019 ◽  
Vol 823 ◽  
pp. 117-122
Author(s):  
Norifumi Miyanaga ◽  
Jun Tomioka
Keyword(s):  
Wear Resistance ◽  
Composite Coating ◽  
Room Temperature ◽  
Frictional Coefficient ◽  
High Hardness ◽  
Wear Properties ◽  
Practical Applications ◽  
Composite Plating ◽  
Sic Particles ◽  
Plate Type

Electroless nickels have been used in practical applications as versatile materials for anti-wear. The wear resistance is well-improved as a composite coating by incorporating particles. Composite platting offers various mechanical and electoronic functions, depending on the combination of a material matrix and particles deposited. Among them Ni-P plating reinforced with SiC particles have been growing in importance owing to its high hardness and better anti-wear properties. In this study, a Ni-P-SiC/Ni-P-SiC system was evaluated using a ball-on-plate type reciprocating tester, and the results were compared with that of SiC/SiC system at room temperature. As the results, the Ni-P-SiC/Ni-P-SiC system with the surfaces where SiC particles were appeared in clumps had the low frictional coefficient around 0.1 even in water.

Microstructure and Property of Wear-Resistant Coating Layer by High-Frequency Induction Cladding on Mild Steel Surface

2011 ◽  
Vol 239-242 ◽  
pp. 773-776
Author(s):  
Li Yang ◽  
Gang Li
Keyword(s):  
Wear Resistance ◽  
Mild Steel ◽  
High Frequency ◽  
Coating Layer ◽  
High Hardness ◽  
Alloy Coating ◽  
Alloy Layer ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Frequency Induction

In order to improve the wear resistance of mild steel products, the Fe-based alloy layer was melted on the surface of mild steel by high-frequency induction cladding. Using scanning electron microscopy, energy dispersive spectroscopy and x-ray diffraction observation of microstructure of the alloy coating, wear resistance of the coating was evaluated. The results showed that: between the coating and the substrate is metallurgical bonded; The microstructure of coating layer was compact actinomorphous structure with plentiful nubby and strip eutectics; Actinomorphous structure was mixed structure of martensite and γ alloy solid solution covered with a large number floriform and dendrite eutectic; The coating has high hardness and good wear resistance.

The Effect of Processes Parameters on the Abrasive Wear Resistance of Boronized AISI 1050 Steel

2016 ◽  
Author(s):  
Mete Han Boztepe ◽  
Melih Bayramoglu
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Mesh Size ◽  
High Hardness ◽  
High Strength ◽  
Constant Load ◽  
Abrasive Wear Resistance ◽  
Wear Testing ◽  
Wear Properties ◽  
Pin On Disk

Boronizing is one of the thermochemical surface treatment processes which is extensively used to obtain excellent mechanical properties such as high strength, very high hardness, good toughness and fracture toughness. In this study, AISI 1050 steel specimens have been subjected to pack boronizing process by using Ekabor 2 powder within the stainless steel seal container. The experiments were carried out at temperatures of 800 °C, 850 °C and 900 °C for 3, 6 and 9 hours to investigate the effect of these parameters on the wear resistance of boronized specimens. Pin-on-Disk wear testing is used to characterize wear properties of boronized specimens. Wear tests were performed at dry conditions under constant load of 30 N by using 220 mesh size Al2O3 abrasive paper. Different rotating speeds of the pin-on disk were selected as 300, 600, 900, 1200, 1500 revolutions for each of the test specimens. After the abrasive tests, weight losses of the specimens were measured to determine the abrasive wear resistance of boronized specimens. The results were also compared with unboronized and conventional hardened AISI 1050 steel specimens respectively.

Wear Behaviour of HVOF Sprayed WC-Cobalt Coatings

2011 ◽  
Vol 326 ◽  
pp. 144-150
Author(s):  
A. Mateen ◽  
Fazal Ahmad Khalid ◽  
T.I. Khan ◽  
G.C. Saha
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
High Hardness ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Coating Structure ◽  
Superior Mechanical Properties ◽  
Cobalt Coating ◽  
Mining Tools ◽  
Duplex Coatings

Tungsten carbide cobalt coating has been extensively used for cutting and mining tools, aerospace, automotive and other wear resistance applications. These coatings not only have superior mechanical properties like high hardness, toughness and compressive strength but have also excellent controllable tribological properties. In this paper a comparison of wear properties and structural phases has been presented to consider for tribological applications. It is found that nanocrystalline duplex coatings have shown much superior properties as compared to the microcrystalline coatings. Evidence of clusters of WC particles was found in microcrystalline coating as compared to homogeneous dense coating structure observed in the nanocrystalline coating. These results are discussed to assess their suitability for super hard wear resistance applications.

scholarly journals Study on the Microstructure, Mechanical Properties, and Erosive Wear Behavior of HVOF Sprayed Al2O3-15 wt.%TiO2 Coating with NiAl Interlayer on Al-Si Cast Alloy

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4122
Author(s):  
Marzanna Ksiazek ◽  
Lukasz Boron ◽  
Adam Tchorz
Keyword(s):  
Wear Resistance ◽  
Bending Strength ◽  
Solid Phase ◽  
Wear Behavior ◽  
Cast Alloy ◽  
Erosive Wear ◽  
Tio2 Coating ◽  
Wear Properties ◽  
Compact Structure ◽  
X Ray

Alumina oxide coatings are widely used in many industrial applications to improve corrosion protection, wear and erosion resistances, and thermal insulation of metallic surfaces. The paper presents study of the microstructure, mechanical, and wear properties of HVOF (high velocity oxy-fuel process) sprayed of Al2O3-15 wt.% TiO2 coating with the NiAl interlayer on the surface of Al-Si alloy castings. The microstructure of Al2O3-15 wt.% TiO2/NiAl coating was characterized by light microscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDS). The analysis of the microstructure showed the formation of coating with low porosity, compact structure, good adhesion to the substrate with typical lamellar structure composed of a solid phase consisting of compounds included in the coating material and their phase variations. For analysis of the adhesion of coatings to the substrate, the scratch test was applied. An assessment of the erosive wear resistance of coatings was also carried out, confirming the significant impact of the interlayer as well as the microstructure and phase composition of the oxide coating on the wear resistance of the tested coating system. Moreover, the results were discussed in relation to the bending strength test, including cracks and delamination in the system of the Al2O3-15 wt.% TiO2/NiAl/Al-Si alloy as microhardness and erosion resistance of the coating. It was found that the introduction of the NiAl metallic interlayer significantly increased resistance to cracking and wear behavior in the studied system.

Structural Stability of Novel Multicomponent AlZn-Based Cast Alloy

2018 ◽  
Vol 941 ◽  
pp. 925-930
Author(s):  
Paweł K. Krajewski ◽  
A. Lindsay Greer ◽  
Marek Faryna ◽  
Witold K. Krajewski
Keyword(s):  
Wear Resistance ◽  
Structural Modification ◽  
Cast Alloy ◽  
High Dimensional ◽  
Wear Properties ◽  
Dimensional Changes ◽  
Cu Content ◽  
Cu Alloy ◽  
Master Alloys ◽  
Alloy Microstructure

Structural modification of ternary aluminium – zinc – coper alloys influences their wear properties. In a series of studies, Al – 30 wt. % Zn – 3 wt. % Cu alloy (Al-30Zn-3Cu) has been doped with 1 wt.% Mn introduced with AlMn-based master alloys. The alloy microstructure and mechanical properties have been studied using light and SEM/EBSD microscopy, and measurements of wear resistance and dimensional changes. Reducing Cu content to 3 wt.% and doping with 1 wt.% Mn allows obtaining alloy of significantly refined grains, improved wear resistance and preserved high dimensional stability.

Microstructure and Wear Properties of Ni-W-Si Coatings by Laser Cladding

2015 ◽  
Vol 750 ◽  
pp. 214-219
Author(s):  
Xiao Peng Liu ◽  
Pei Lei Zhang ◽  
Hua Yan ◽  
Yun Long Lu ◽  
Zhi Shui Yu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Laser Cladding ◽  
Composite Coatings ◽  
High Hardness ◽  
Wear Properties ◽  
Laser Cladding Process ◽  
Intermetallic Composite

Ni-W-Si intermetallic composite coatings consisting of primary tungsten dendrites and eutectic W/WSi2 were fabricated on 45 steel by laser cladding process using Ni-W-Si powder. The microstructure and composition of the coatings were characterized by SEM, XRD and EDS. The effect of the W content on the hardness and wear resistance of coatings was investigated. Results indicate that attributed to the high hardness and toughness of tungsten dendrites and fine and compact eutectic W/WSi2, coatings had high hardness being 950HV in maximum and the wear resistance was elevated to 4-8 times higher.

REYNOLDS 390 and A390

Alloy Digest ◽  
1971 ◽  
Vol 20 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Temperature Performance

Abstract REYNOLDS 390 and A390 are hypereutectic aluminum-silicon alloys having excellent wear resistance coupled with good mechanical properties, high hardness, and low coefficients of expansion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and machining. Filing Code: Al-203. Producer or source: Reynolds Metals Company.

HOWMET No. 3

Alloy Digest ◽  
1968 ◽  
Vol 17 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Base Alloy ◽  
High Hardness ◽  
Heat Treating ◽  
High Heat ◽  
Cobalt Base Alloy ◽  
Metal Products ◽  
Cobalt Base

Abstract HOWMET No. 3 is a cobalt-base alloy having high hardness and compressive strength, high heat and corrosion resistance, along with excellent abrasion and wear resistance. It is recommended for bushings, scrapers, valve parts, and other machinery components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Co-56. Producer or source: Howmet Corporation Metal Products Division.

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