Constitutive analysis for the quantification of hardness decay in a superlattice CrN/NbN hard-coating

Cabibbo, Marcello; Clemente, Nicola; Mehtedi, Mohamad El; Musharavati, Farayi; Santecchia, Eleonora; Spigarelli, S.

doi:10.1016/j.surfcoat.2015.05.024

Cited by 6 publications

(4 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where H 0 was the initial hardness, t the time of exposure, T the absolute temperature and F s a softening function expressing the level of coating degradation. Simple transformations (details can be found in [20]) led to the introduction of a simple parametric approach where the hardness was plotted as a function of a parameter P in the form:…”

Section: Resultsmentioning

confidence: 99%

Thermal Plasticity Index of Nanostructured N-Based Coatings on HSS 6-5-2 (1.3343) Tool Steel

Cabibbo

Clemente

Musharavati

et al. 2016

MSF

View full text Add to dashboard Cite

Nowadays, cutting tools, designed to be used for machining without lubricants, are developed to improve the high working speed capabilities. With this respect, quaternary Ti-and N-based coatings are able to significant increase hardness, wear resistance and high temperature oxidation resistance. One of the major drawbacks still consists on the limited thermal stability of such coatings, which is reported to be about 600°C. In the present study, thermal stability studies of a nanostructured multi-layered N-based (AlTiCrxN1-x) coating on a HSS 6-5-2 tool steel were carried out. Two quantities were calculated out of the hardness and elastic modulus of the coatings. One is the ratio H/E that represents the coating resistance to compression without failure; another one is H3/E2, which provides information on the specific contact pressure limit without failure. It was found that, by using the less demanding thermal cycling mode, the coating ability to plastically deform without damage, is retained up to 800-1000°C. The highest, and more effective coating plasticity index was obtained by using the less demanding cycling mode, while, the other two modes induced a continuous index decrease with temperature.

show abstract

Section: Resultsmentioning

confidence: 99%

Thermal Plasticity Index of Nanostructured N-Based Coatings on HSS 6-5-2 (1.3343) Tool Steel

Cabibbo

Clemente

Musharavati

et al. 2016

MSF

View full text Add to dashboard Cite

show abstract

“…These significant mechanical properties were inferred by nanoindentation, wear and thermal cycling tests; the main results are summarized and outlined hereafter. Experimental methods and procedures can be found elsewhere in previously published papers by one of the present authors (Cabibbo et al) [ 83 , 84 , 85 , 86 , 87 ]; thence, no changes in the surface roughness were observed up to 800 °C. The external surface of quaternary TiAl1-xCrxN (with x varying from 0.3 to 0.7) started to form scattered oxide spots whenever continuously exposed to a temperature of 800 °C.…”

Section: Substitution Of Critical Raw Materials In Tool Steelmentioning

confidence: 93%

Solutions of Critical Raw Materials Issues Regarding Iron-Based Alloys

et al. 2021

View full text Add to dashboard Cite

The Critical Raw Materials (CRMs) list has been defined based on economic importance and supply risk by the European Commission. This review paper describes two issues regarding critical raw materials: the possibilities of their substitution in iron-based alloys and the use of iron-based alloys instead of other materials in order to save CRMs. This review covers strategies for saving chromium in stainless steel, substitution or lowering the amounts of carbide-forming elements (especially tungsten and vanadium) in tool steel and alternative iron-based CRM-free and low-CRM materials: austempered ductile cast iron, high-temperature alloys based on intermetallics of iron and sintered diamond tools with an iron-containing low-cobalt binder.

show abstract

“…This occurs because there are dislocations in the film's structure. The pop-in event is much smaller than the film thickness and only exists in films that are nano-crystalline [19]. Fan et al [20] reported that complex factors produce a stochastic pop-in event for different indentation loads.…”

Section: Analysis Of Zrn Wn and Zrwn Filmsmentioning

confidence: 99%

Effects of deposition parameters on the structure and properties of ZrN, WN and ZrWN films

Chen

Kuo

et al. 2019

Bull Mater Sci

View full text Add to dashboard Cite

This paper examines optimal settings for deposition parameters for transition metal nitride (ZrN, WN and ZrWN) thin films that are deposited on tungsten carbide tools and glass substrates using direct current (DC) reactive sputtering with pure Zr and W metal targets and Ar plasma and N 2 reactive gases. Experiments using the grey-Taguchi method are conducted to study the effects of deposition parameters (substrate plasma etching time, N 2 /(N 2 + Ar) flow rate, deposition time and substrate temperature) on a film that is deposited on a cutting tool that is used for dry machining and on the films' mechanical properties. The substrates' surfaces are etched using oxygen plasma pretreatment. It is clear that the coated film is homogeneous, very compact and exhibits perfect adherence to the substrate. The results of grey relational analysis show for the dry turning AISI 304 stainless steel that the surface roughness is approximately R a = 0.70 μm and that the flank wear is approximately 14.02 μm. The grey relational analysis shows that the period for which the substrate (tungsten carbide tool) is under plasma-etched pretreatment has the most significant effect on both the surface roughness and flank wear. The coated films are analysed using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray diffraction and a nano-indenter. The ternary nitride (ZrWN)-coated specimens exhibit better mechanical properties than binary nitride (ZrN and WN) specimens. The optimum ZrWN coating exhibits the greatest hardness (H), elastic modulus (E) and H/E values.

show abstract

Constitutive analysis for the quantification of hardness decay in a superlattice CrN/NbN hard-coating

Cited by 6 publications

References 73 publications

Thermal Plasticity Index of Nanostructured N-Based Coatings on HSS 6-5-2 (1.3343) Tool Steel

Thermal Plasticity Index of Nanostructured N-Based Coatings on HSS 6-5-2 (1.3343) Tool Steel

Solutions of Critical Raw Materials Issues Regarding Iron-Based Alloys

Effects of deposition parameters on the structure and properties of ZrN, WN and ZrWN films

Contact Info

Product

Resources

About