The manufacture and characterization of WC-(Al)CoCrCuFeNi cemented carbides with nominally high entropy alloy binders

Mueller-Grunz, Andrea; Alveen, Patricia; Raßbach, S.; Useldinger, Ralph; Moseley, Steven

doi:10.1016/j.ijrmhm.2019.105032

Cited by 38 publications

(22 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The remelting takes place also in the overlapping neighboring laser line scans [90][91][92]98]. Therefore, the lateral shift of the scan tracks or even their axial rotation for the subsequent coating layers could additionally improve the wear properties [99] or prevent the cracking of a hard coating [100,101].…”

Section: Gb Wetting In Multitrack and Multilayer Hea Coatingsmentioning

confidence: 99%

High Entropy Alloys Coatings Deposited by Laser Cladding: A Review of Grain Boundary Wetting Phenomena

et al. 2022

View full text Add to dashboard Cite

High-entropy alloys (HEAs) are called also alloys without a main component or multiprincipal alloys. They consist of five, six or more components in more or less equal proportions and possess unique properties. Several dozens of thousands of publications have already been devoted to bulk HEAs, while HEA coatings are just beginning to develop. More than half of the works on the deposition of HEA coatings are devoted to laser cladding. In the laser cladding process, a mixture of powders on a substrate is melted in a focused laser beam, which sequentially scans the substrate. In the heated zone, the powder mixture melts. At the end of the crystallization process, a solidified polycrystal and a small amount of residual melt are found in the heated zone. It is possible that the grain boundaries (GBs) in the solidified polycrystal are incompletely or fully wetted by this liquid phase. In this way, the GB wetting with a melt determines the morphology and microstructure of HEAs coatings. This review analyzes GB wetting in single-phase HEAs, as well as in HEAs containing two or more phases. We analyze how the HEAs’ composition, laser scanning speed, laser beam power, external magnetic field or ultrasonic impact affect the microstructure and GB wetting. It is also shown how the microstructure and GB wetting change over the thickness of the rather thick as well as multilayer coatings deposited using a laser cladding.

show abstract

Section: Gb Wetting In Multitrack and Multilayer Hea Coatingsmentioning

confidence: 99%

High Entropy Alloys Coatings Deposited by Laser Cladding: A Review of Grain Boundary Wetting Phenomena

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Figure 5 demonstrates how the cast microstructures of all alloys studied in [94] depend on the chemical composition. In the left column in Figure 5 The WC-(Al)CoCrCuFeNi cemented carbides with nominally high entropy alloy binders were studied in [95]. The conventional cemented carbides consist of WC grains surrounded by a cobalt-based binder [96][97][98].…”

Section: Gb Wetting Phenomena In Heas Containing Carbides and Boridesmentioning

confidence: 99%

“…Approximately 10% of WC/WC GBs are completely wetted, and the other GBs are partially wetted with rather small contact angles. In [95], HEAs were manufactured using two different methods, namely mechanical alloying and gas atomization. The as-manufactured binder alloy powder after gas atomization was sieved, and its fine grain fraction was used for further experiments.…”

Section: Gb Wetting Phenomena In Heas Containing Carbides and Boridesmentioning

confidence: 99%

“…The model cemented carbides (WC + HEA binder) were manufactured by the standard powder metallurgical route in a planetary ball mill. Figure 6 shows the energy dispersive X-ray (EDX) mapping for Co, Cr, Cu, and O signals across the structure of CoCrCuFeNi sintered cemented carbide [95]. The HEA binder exhibits especially good contrast in the Cu map.…”

Section: Gb Wetting Phenomena In Heas Containing Carbides and Boridesmentioning

confidence: 99%

See 1 more Smart Citation

Grain Boundary Wetting Phenomena in High Entropy Alloys Containing Nitrides, Carbides, Borides, Silicides, and Hydrogen: A Review

et al. 2021

View full text Add to dashboard Cite

In this review, we analyze the structure of multicomponent alloys without principal components (they are also called high entropy alloys—HEAs), containing not only metals but also hydrogen, nitrogen, carbon, boron, or silicon. In particular, we discuss the phenomenon of grain boundary (GB) wetting by the melt or solid phase. The GB wetting can be complete or incomplete (partial). In the former case, the grains of the matrix are completely separated by the continuous layer of the second phase (solid or liquid). In the latter case of partial GB wetting, the second solid phase forms, between the matrix grains, a chain of (usually lenticular) precipitates or droplets with a non-zero value of the contact angle. To deal with the morphology of GBs, the new GB tie-lines are used, which can be constructed in the two- or multiphase areas of the multidimensional HEAs phase diagrams. The GBs in HEAs in the case of complete or partial wetting can also contain hydrides, nitrides, carbides, borides, or silicides. Thus, GB wetting by the hydrides, nitrides, carbides, borides, or silicides can be used in the so-called grain boundary chemical engineering in order to improve the properties of respective HEAs.

show abstract

“…Other references also reported that WC particles with excellent hardness, wear and corrosion resistance, and more importantly, could be firmly bonded in HEAs. [ 17 ] Hence, in this study, WC as reinforcing particles was added into the HEAs coating prepared by SLM. The effect of WC content on phase formation, microstructure, elemental composition, microhardness, wear and corrosion properties of CrFeMoNiTi(WC) x ( x : atomic ratio; x = 0, 0.2, 0.3, 0.4, and 0.5) HEAs composite coatings were investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)_x high‐entropy alloys composite coatings prepared by selective laser melting

Desheng

Chen

et al. 2022

Materials & Corrosion

View full text Add to dashboard Cite

To improve the surface properties of Q235 carbon steels, CrFeMoNiTi(WC) x high-entropy alloy composite coatings were fabricated via selective laser melting. The microstructure, wear resistance, and corrosion resistance of the composite coatings were studied. Spherical or near-spherical tungsten carbide (WC) particles are dispersively distributed in the coatings, resulting in the appearance of obvious WC and TiW 2 C phases. And the composite coatings mainly consist of body-centered cubic (BCC) and face-centered cubic (FCC).When x ≤ 0.3, the addition of WC enhances the BCC diffraction peak. Microhardness of the composite coatings with WC increases and is much higher than that of the substrate (280.6 HV 0.1 ). The hardness of the CrFeMoNiTi(WC) 0.3 (1005.1 HV 0.1 ) is the highest among the composite coatings. The retained WC particles and BCC acted as load bearers during the friction process, which reduces the wear loss of the composite coating. Also, the anodic protection caused by the corrosion-resistant WC particles and BCC greatly improves the ability of the composite coatings to resist NaCl attack. Hence, CrFeMoNiTi(WC) 0.3 exhibited the optimum wear resistance and corrosion resistance.

show abstract

The manufacture and characterization of WC-(Al)CoCrCuFeNi cemented carbides with nominally high entropy alloy binders

Cited by 38 publications

References 8 publications

High Entropy Alloys Coatings Deposited by Laser Cladding: A Review of Grain Boundary Wetting Phenomena

High Entropy Alloys Coatings Deposited by Laser Cladding: A Review of Grain Boundary Wetting Phenomena

Grain Boundary Wetting Phenomena in High Entropy Alloys Containing Nitrides, Carbides, Borides, Silicides, and Hydrogen: A Review

Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)_x high‐entropy alloys composite coatings prepared by selective laser melting

Contact Info

Product

Resources

About

The manufacture and characterization of WC-(Al)CoCrCuFeNi cemented carbides with nominally high entropy alloy binders

Cited by 38 publications

References 8 publications

High Entropy Alloys Coatings Deposited by Laser Cladding: A Review of Grain Boundary Wetting Phenomena

High Entropy Alloys Coatings Deposited by Laser Cladding: A Review of Grain Boundary Wetting Phenomena

Grain Boundary Wetting Phenomena in High Entropy Alloys Containing Nitrides, Carbides, Borides, Silicides, and Hydrogen: A Review

Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)x high‐entropy alloys composite coatings prepared by selective laser melting

Contact Info

Product

Resources

About

Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)_x high‐entropy alloys composite coatings prepared by selective laser melting