Wear resistance of diode laser-clad Ni/WC composite coatings at different temperatures

Weng, Zhikun; Wang, Aihua; Wu, Xuhao; Wang, Yuying; Yang, Zhixiang

doi:10.1016/j.surfcoat.2016.06.081

Cited by 110 publications

(44 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Compared with external auxiliary methods, the influences of different WC particles on the microstructures and properties of the cladding coating are revealed by changing the types of WC particles, so as to obtain a high-quality cladding coating with a uniform WC distribution, which is more applicable for industrial use. So far, scholars at home and abroad have conducted much in-depth research on the influencing mechanisms of the microstructures and properties of the cladding coating that result from the addition of specific types of WC particles [18][19][20], but the influencing mechanisms of different types of WC particles on the microstructures and properties of cladding coatings have been rarely reported. For this reason, Ni/WC composite coatings were produced on the surface of a 304 stainless steel substrate by laser cladding technology in this paper.…”

Section: Introductionmentioning

confidence: 99%

Effects of WC Particle Types on the Microstructures and Properties of WC-Reinforced Ni60 Composite Coatings Produced by Laser Cladding

Zhang

Pang

2019

Metals

View full text Add to dashboard Cite

WC-reinforced Ni60 composite coatings with different types of WC particles were prepared on 304 stainless steel surface by laser cladding. The influences of spherical WC, shaped WC, and flocculent WC on the microstructures and properties of composite coatings were investigated. The results showed that three types of WC particles distribute differently in the cladding coatings, with spherical WC particles stacking at the bottom, shaped WC aggregating at middle and lower parts, with flocculent WC particles dispersing homogeneously. The hardnesses, wear resistances, corrosion resistances, and thermal shock resistances of the coatings are significantly improved compared with the stainless steel substrate, regardless of the type of WC that is added, and especially with regard to the microhardness of the cladding coating; the addition of spherical or shaped WC particles can be up to 2000 HV0.05 in some areas. Flocculent WC, shaped WC, and spherical WC demonstrate large to small improvements in that order. From the results mentioned above, the addition of flocculent WC can produce a cladding coating with a uniform distribution of WC that is of higher quality compared with those from spherical WC and shaped WC.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of WC Particle Types on the Microstructures and Properties of WC-Reinforced Ni60 Composite Coatings Produced by Laser Cladding

Zhang

Pang

2019

Metals

View full text Add to dashboard Cite

show abstract

“…Comparing the morphologies of surfaces in Figure 3 , Figure 4 and Figure 5 a, the porosities became larger, which were related to the Cr content. The forming of porosities was because of the presence of an eddy flux, forward and downward, around the key hole interface; the formed bubbles do not escape from the molten pool, but remain entrapped, thus generating porosity at the end of the solidification process [ 17 , 18 , 19 ], and another reason for porosity generation was that the free carbons in the powders were easily combined with the O in the air to form CO or CO 2 [ 19 ].…”

Section: Analysis and Discussionmentioning

confidence: 99%

Micro-Structures and High-Temperature Friction-Wear Performances of Laser Cladded Cr–Ni Coatings

Dejun

2018

Materials

View full text Add to dashboard Cite

Cr–Ni coatings with the mass ratios of 17% Cr–83% Ni, 20% Cr–80% Ni and 24% Cr–76% Ni were fabricated on H13 hot work mould steel using a laser cladding (LC). The surface–interface morphologies, chemical elements, surface roughness and phase composition of the obtained Cr–Ni coatings were analysed using a scanning electron microscope (SEM), energy disperse spectroscopy (EDS), atomic force microscope (AFM) and X–ray diffractometer (XRD), respectively. The friction–wear properties and wear rates of Cr–Ni coatings with the different mass ratios of Cr and Ni at 600 °C were investigated, and the worn morphologies and wear mechanism of Cr–Ni coatings were analysed. The results show that the phases of Cr–Ni coatings with mass ratios of 17% Cr–83% Ni, 20% Cr–80% Ni and 24% Cr–76% Ni are composed of Cr + Ni single-phases and their compounds at the different stoichiometry, the porosities on the Cr–Ni coatings increase with the Cr content increasing. The average coefficient of friction (COF) of 17% Cr–83% Ni, 20% Cr–80% Ni and 24% Cr–76% coatings are 1.10, 0.33 and 0.87, respectively, in which the average COF of 20% Cr–80% Ni coating is the lowest, exhibiting the better anti-friction performance. The wear rate of 17% Cr–83% Ni, 20% Cr–80% Ni and 24% Cr–76% Ni coatings is 4.533 × 10−6, 5.433 × 10−6, and 1.761 × 10−6 N−1·s−1, respectively, showing the wear resistance of Cr–Ni coatings at a high temperature increases with the Cr content, in which the wear rate is 24% Cr–76% Ni coating with the better reducing wear. The wear mechanism of 17% Cr–83% Ni and 20% Cr–80% Ni and 24% Cr–76% coatings at 600 °C is primarily adhesive wear, and that of 24% Cr–76% coating is also accompanied by oxidative wear.

show abstract

“…Several methods for experimental testing of tribology and wear behavior of potential roll and cladding materials have been used by researchers. The majority of these methods can be roughly classified as 1) pin‐on‐disc or ball‐on‐disc tests, 2) ring‐on‐bock tests with different setups, 3) block‐on‐disc tests with or without addition of abrasive particles, and 4) disc‐on‐disc or roll‐on‐roll tests with two or even three discs or rolls, respectively. Among those test methods, in particular, the roll‐on‐roll tests are suitable to simulate the combined effects of relative motion (slip effects) and high contact pressure between the rolls of the rolling mill and the metal strip.…”

Section: Methodsmentioning

confidence: 99%

“…MMC claddings typically consist of crushed or spherical tungsten carbide particles embedded into an iron‐, cobalt‐, or nickel‐based matrix. The microstructure and the wear behavior of these claddings are generally well studied at room temperature, but only a few investigations focus on their particular wear behavior at elevated temperatures . At room temperature, abrasive wear tends to decrease with increasing hardness of the MMC cladding, i.e., with increasing content or size of the hard particles inside the matrix, respectively.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Wear Testing of Metal Matrix Composite Cladding for Potential Application in Hot Rolling Mills

Domitner

Aigner²,

Stern

et al. 2019

steel research int.

View full text Add to dashboard Cite

Laser metal deposition (LMD) is utilized to clad the surface of a miniaturized test roll (Ø 40 mm) of tool steel. The cladding consists of two layers: a nickel alloy as intermediate layer deposited onto the surface of the steel substrate, and a metal matrix composite (MMC) as top layer consisting of spherical tungsten carbide particles embedded into the nickel alloy matrix. The thermomechanical wear behavior of the cladding is investigated on a test rig, where the test roll is pressed against an inductively heated load roll. Multiple test runs up to several hours simulating industrial loading conditions are performed. The presented testing procedure enables predicting the time-dependent abrasive wear behavior of the cladding, in particular for hot rolling mill applications. After testing for 8 h at temperature of 650 C and at contact pressure of approximately 1 GPa, the maximum depth of the wear mark is about 0.12 mm. Partial cracking, debonding and dissolution of the tungsten carbide particles, as well as formation of iron and chromium oxides at the surface of the wear marks occur. However, as low abrasive wear is observed, the investigated MMC may potentially be applicable for cladding rolls in steel hot rolling mills.

show abstract

Wear resistance of diode laser-clad Ni/WC composite coatings at different temperatures

Cited by 110 publications

References 26 publications

Effects of WC Particle Types on the Microstructures and Properties of WC-Reinforced Ni60 Composite Coatings Produced by Laser Cladding

Effects of WC Particle Types on the Microstructures and Properties of WC-Reinforced Ni60 Composite Coatings Produced by Laser Cladding

Micro-Structures and High-Temperature Friction-Wear Performances of Laser Cladded Cr–Ni Coatings

Thermomechanical Wear Testing of Metal Matrix Composite Cladding for Potential Application in Hot Rolling Mills

Contact Info

Product

Resources

About