Characteristic properties of AlTiN and TiN coated HSS materials

Abstract

Users who downloaded this article also downloaded: (2015),"The Jatropha curcas vegetable base soluble cutting oil as a renewable source in the machining of aluminum alloy 7050-T7451", Industrial Lubrication and Tribology, Vol. 67 Iss 2 pp. 181-195 http://dx.(2015),"Laser treatment of high strength low alloy steel and electrochemical response of the surface", Industrial Lubrication and Tribology, Vol. 67 Iss 2 pp. 166-171 http://dx.(2015),"Wear predictions for cams in line contacts based on multidisciplinary simulation", Industrial Lubrication and Tribology, Vol. 67 Iss 2 pp. 159-165 http://dx.If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this paper is to examine mechanical and metallurgical properties of AlTiN-and TiN-coates high-speed steel (HSS) materials in detail. Design/methodology/approach -In this study, HSS steel parts have been processed through machining and have been coated with AlTiN and TiN on physical vapour deposition workbench at approximately 6,500°C for 4 hours. Tensile strength, fatigue strength, hardness tests for AlTiN-and TiN-coated HSS samples have been performed; moreover, energy dispersive X-ray spectroscopy and X-ray diffraction analysis and microstructure analysis have been made by scanning electron microscopy. The obtained results have been compared with uncoated HSS components. Findings -It was found that tensile strength of TiAlN-and TiN-coated HSS parts is higher than that of uncoated HSS parts. Highest tensile strength has been obtained from TiN-coated HSS parts. Number of cycles for failure of TiAlN-and TiN-coated HSS parts is higher than that for HSS parts. Particularly TiN-coated HSS parts have the most valuable fatigue results. However, surface roughness of fatigue samples may cause notch effect. For this reason, surface roughness of coated HSS parts is compared with that of uncoated ones. While the average surface roughness (Ra) of the uncoated samples was in the range of 0.40 m, that of the AlTiN-and TiN-coated samples was in the range of 0.60 and 0.80 m, respectively. Research limitations/implications -It would be interesting to search different coatings for cutting tools. It could be the good idea for future work to concentrate on wear properties of tool mater...

Experimental Study on Tool Wear and Delamination in Milling CFRPs with TiAlN- and TiN-Coated Tools

“…In the case of carbide tools with high toughness properties, the wear on the tool is caused by abrasion, and the best performance in the processing of fiber-reinforced composite materials is achieved by carbide tools [37]. Moreover, Physical Vapor Deposition (PVD) coatings are becoming widespread in applications where sharp cutting edges are required, or in those featuring interrupted cutting operations [38]. The highest wear value (189.30 µm) of the TiAlN-and TiN-coated tools used for milling CFRP materials was found to be no more than the ISO standard's flank wear criterion: VB = 300 µm [39].…”

The influence of duplex vacuum-plasma treatment on the mechanics of complex-profile cutting tool wearing in the production of aircraft engine parts

“…The data presented in Figures 11,12,and 14 show that nitriding at 60% N 2 + 40% Ar intensifies the wear of broaches and gear-shaping cutters in the processing of nickel alloy and significantly worsens the operating conditions of the tool compared to the original tool (without surface treatment).…”

“…The latter is especially important when it comes to finishing machining operations, such as stretching. Another effect that can be achieved by coating is minimizing the amount of used cutting fluid, and, in some cases, eliminating its use, that is implementing environmentally friendly machining technologies [11][12][13][14][15][16].…”

Application of roller burnishing technologies to improve the wear resistance of submerged pump parts made of powder alloys

“…Due to the reduced operating life of grey cast iron parts, this material must now be recognized as obsolete. For critical submersible pump parts, the material, which holds more promise, is the nickel cast iron with an austenitic structure (Ni-resist) [24]. Casting technology is cheaper than powder technology but needs to be improved to give the required surface properties.…”