The use of dta for determination of the equilibrium diagram for 9-0-2+Si high-speed steel

Durability of cutting tool defines lifetime of this cutting tool and it determines its suitability for select technological operation. Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime. For increase cutting tool durability is necessary maximally possible elimination of these factors. Determination of cutting tool durability is very important, because provides comprehensive information how to determine appropriate technological conditions for selected cutting tool. In engineering is for determination of cutting tools durability used T-vc dependence. Durability of cutting tools is defined in standard ISO 3685. In standard ISO 3685 is defined T-vc dependence for different cutting materials and standard included process evaluation of tool durability for cutting materials made of high speed steel, sintered carbide and cutting ceramic. Specification of cutting tools durability in machining process of steel 16MoV6-3 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises. Standard ISO 3685 contains instructions how to create T-vc dependence for cutting tools. In this standard are only instructions how to create T-vc dependence according to Mr. Taylor. The article describes process how to create durability dependence for cutting tools made of sintered carbide in machining process of 16MoV6-3 by means of T-vc dependence.

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Hardening Curve Plotting and Determination of the Coating Limiting State Criterion based on the Continuous Indentation Method and Computational Modelling

MATEC Web of Conferences ◽

10.1051/matecconf/201822001001 ◽

2018 ◽

Vol 220 ◽

pp. 01001

Author(s):

Alexander Ivanchenko ◽

Alexey Zhdanov ◽

Valentin Morozov

Keyword(s):

Yield Strength ◽

Modulus Of Elasticity ◽

High Speed ◽

Computational Modelling ◽

High Speed Steel ◽

Strength Analysis ◽

Limiting State ◽

Hardening Curve ◽

Tangential Modulus

The article describes the method of determining the parameters of the hardening curve of homogeneous and structured coatings (modulus of elasticity, tangential modulus of elasticity and yield strength) required for the strength analysis of parts with coatings that determine their basic performance and strength characteristics. The dependence for determination of tangential (tangential) modulus of elasticity using the results of nanoindentation is proposed. An algorithm for determining the yield strength of the coating material is developed based on solving the problem of elastic-plastic deformation of the coating during the introduction of the indenter by the finite element method. According to the proposed method, the parameters of the TiN/AlN in coating hardening curve were determined based on the results of indentation of the sample of tool high-speed steel with the appropriate coating.

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Comparison Of Oxidation Resistance of TiAlN Monolayer Coating And Its NaCo3 Nanostructured Version

Research Papers Faculty of Materials Science and Technology Slovak University of Technology ◽

10.2478/rput-2013-0011 ◽

2013 ◽

Vol 21 (Special-Issue) ◽

pp. 67-72

Author(s):

Martin Sahul ◽

Paulína Zacková ◽

Ľubomír Čaplovič ◽

Kristián Šalgó ◽

Jana Bohovičová ◽

...

Keyword(s):

Oxidation Resistance ◽

High Speed ◽

Elevated Temperatures ◽

High Speed Steel ◽

Phase Detection ◽

X Ray Diffraction ◽

Oxide Layers ◽

Edx Analysis

Abstract The contribution deals with comparison of oxidation resistance of classical TiAlN monolayer coating and its advanced high hard nanostructured and multilayered nACo3 version at elevated temperatures. Both coatings were deposited onto AISI M36 high speed steel using unique LAteral Rotating Cathodes process (LARC®). “In - situ” X-Ray diffraction analysis was employed for determination of the beginning of oxides creation and phase detection at different heating temperatures. Scanning electron microscopy fitted with EDX analysis was used for observation of fracture areas and measurements of coatings and oxide layers thicknesses as well. Determination of chemical composition of coatings surfaces and elemental linescans through the coatings and oxide layers were performed using EDX analysis. All measurements of these coatings were carried out not only before but also after the thermal annealing.

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Rapid Borate Fusion Pre-treatment for ICP-AES Determination of Tungsten in High-speed Steel

ISIJ International ◽

10.2355/isijinternational.isijint-2015-648 ◽

2016 ◽

Vol 56 (6) ◽

pp. 1114-1116 ◽

Cited By ~ 5

Author(s):

Kenichi Nakayama ◽

Kazuaki Wagatsuma

Keyword(s):

High Speed ◽

High Speed Steel ◽

Pre Treatment

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Application of the Finite Elements Method for computer simulation of properties of surface layers

Archives of Materials Science and Engineering ◽

10.5604/01.3001.0010.4886 ◽

2017 ◽

Vol 2 (86) ◽

pp. 56-85 ◽

Cited By ~ 1

Author(s):

A. Śliwa

Keyword(s):

Computer Simulation ◽

Finite Elements ◽

High Speed ◽

High Speed Steel ◽

Finite Elements Method ◽

Strength Analysis ◽

Surface Layers ◽

Properties Of Coatings ◽

Simulation And Modelling

Purpose: The work presents the application of the Finite Elements Method in a computer simulation whose aim is to determine the properties of PVD and CVD coatings on various substrates and to optimise parameters of a laser surface treatment process of surface layers of tool steels. Design/methodology/approach: The article discusses the application of the finite elements method for simulating the determination of stresses and microhardness of Ti+TiN, Ti+Ti(CN) and Ti+TiC coatings obtained in a magnetron PVD process on a substrate of sinter high-speed steel, of Ti/Ti(C,N)/CrN, Ti/Ti(C, N)/(Ti, Al)N, Ti/(Ti, Si)N/(Ti, Si)N, Cr/ CrN/CrN, Cr/CrN/TiN and Ti/DLC/DLC coatings obtained in a PVD and CVD process on magnesium alloys, of graded and monolayer coatings (Ti, Al)N, Ti(C,N) produced with the PVD arc technique on a substrate of sintered carbides, cermets and oxide tool ceramics and tool steel remelted and alloyed with a high-performance diode laser (HPDL). Modeling of stresses was performed with the help of finite element method in ANSYS and MARC environment, and the experimental values of stresses were determined based on the sin2Ψ. Findings: The models presented satisfy the assumed criteria, and they can be applied for the determination of properties of surface layers and optimisation of PVD and CVD processes and laser alloying and remelting. The results of a computer simulation correlate with experimental results. The models developed allow to largely eliminate costly, timeconsuming and specialist experiments which have to be done during investigations for the benefit of computer simulations. Research limitations/implications: To be able to assess the possibility of application of surface layers, a computer simulation of other properties of coatings has to be additionally carried out, and a strength analysis has to be made of other coatings coated onto various substrate materials. Originality/value: value Computer simulation and modelling is an interdisciplinary field necessary for the development of science and technology, enabling to perform direct visualisation of properties, which cannot be identified in experimental observations. The purpose of computer simulation and modelling is to improve the ability to predict results and to optimise solutions.

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