Mössbauer study of surface layers of high-speed steel after laser treatment

1992 ◽  
Vol 69 (1-4) ◽  
pp. 589-592 ◽  
Author(s):  
R. Valiev ◽  
V. Bochkov ◽  
Sh. Bashkirov ◽  
E. Romanov ◽  
V. Chistjakov
Keyword(s):  
Laser Treatment ◽  
High Speed ◽  
High Speed Steel ◽  
Surface Layers ◽  
Mössbauer Study

Increasing the wear resistance of surface layers of high-speed steel by electric-spark alloying and laser treatment

1999 ◽  
Vol 38 (7-8) ◽  
pp. 362-366
Author(s):  
V. P. Botvinko ◽  
M. S. Koval’chenko ◽  
A. V. Paustovskii ◽  
A. I. Yuga ◽  
A. D. Kostenko
Keyword(s):  
Wear Resistance ◽  
Laser Treatment ◽  
High Speed ◽  
High Speed Steel ◽  
Surface Layers

Effect of diamond dressing on the state of the surface layers of high-speed steel cutting tools

1972 ◽  
Vol 4 (6) ◽  
pp. 516-518
Author(s):  
V. Ya. Bulanov ◽  
A. P. Shevel ◽  
P. A. Yudkovskii
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
The State ◽  
Surface Layers ◽  
Steel Cutting

Effects of Electrolyte Plasma Carbonitriding on Tribological Properties of High Speed Steel

2013 ◽  
Vol 712-715 ◽  
pp. 7-11 ◽  
Author(s):  
Mazhyn Skakov ◽  
Bauyrzhan Rakhadilov ◽  
Michael Sсheffler
Keyword(s):  
Wear Resistance ◽  
Tribological Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Scratch Test ◽  
Abrasive Wear Resistance ◽  
R6m5 Steel ◽  
Surface Layers ◽  
Test Conditions ◽  
Modified Layer

This paper presents research of influence electrolyte plasma carbonitriding on tribological properties of R6M5 high-speed steel. Shows perspectiveness of carbonitriding high-speed steels in electrolyte plasma. The results of research demonstrated increasing wear-resistance of R6M5 steel after carbonitriding in electrolyte plasma. Under the same test conditions by the method of scratch-test have been determined that the depth of the scar of a modified layer has become less in comparison with the original sample, which indicates a significant increase of wear-resistance and hardness of the surface carbonitriding layer R6М5 steel. It was set that after electrolytic-plasma carbonitriding abrasive wear-resistance of the surface layers of R6M5 steel is increased by 25%. Introduction

scholarly journals Dynamic Nanostructuring of the Steel Surface Under High-Speed Thermal Heating

2020 ◽  
Vol 329 ◽  
pp. 02018
Author(s):  
Andrey Brover ◽  
Galina Brover ◽  
Olga Moysova ◽  
Valeriya Yankovskaya
Keyword(s):  
Laser Treatment ◽  
High Speed ◽  
Steel Surface ◽  
Pulsed Laser ◽  
Strength Characteristics ◽  
Thermal Heating ◽  
Surface Layers ◽  
Nanoscale Level

The research depicts structural picture of the steel surface layers after pulsed laser treatment with surface reflow. There are factors contributing to the dispersion of forming crystals to the nanoscale level. There is also found interdependence of nanostructure and laser-irradiated products strength characteristics.

Comparison of Structure and Properties of Hard Coatings on Commercial Tool Materials Manufactured with the Pressureless Forming Method or Laser Treatment

2010 ◽  
Vol 638-642 ◽  
pp. 1830-1835 ◽  
Author(s):  
Grzegorz Matula ◽  
Mirołsaw Bonek ◽  
Leszek Adam Dobrzański
Keyword(s):  
Surface Layer ◽  
Laser Treatment ◽  
High Speed ◽  
High Speed Steel ◽  
Hard Coatings ◽  
Structure And Properties ◽  
Alloying Additions ◽  
Test Pieces ◽  
Treatment Conditions ◽  
Selection Of

The goal of the work is fabrication coatings with the pressureless forming method or laser treatment retaining the relatively high ductility of the coated tool's core. The paper presents selection of the binder portion and type, and also of the metallic and carbides powders (WC) being the constituents of the polymer-powder slurry which was applied onto the prepared surfaces of the test pieces from the conventional HS6-5-2 high speed steel. This materials was compared with the same conventional HS6-5-2 high speed steel heat-treatable steel after laser treatment conditions and alloying additions contained in WC. Investigation indicate the influence of the alloying carbides on the structure and properties of the surface layer of investigated steel depending on manufacturing conditions and power implemented laser (HPDL). In the effect of laser alloying with powders of carbides occurs size reduction of microstructure as well as dispersion hardening through fused in but partially dissolved carbides and consolidation through enrichment of surface layer in alloying additions coming from dissolving carbides. The resistivity to thermal fatique of laser remelted steel is higher than steel after heat treatment. It shows the possibility of applying the worked out technology to manufacturing or regeneration of chosen hot working tools.

Effect of Laser Surface Melting on Structure and Properties of a High Speed Tool Steel

2011 ◽  
Vol 291-294 ◽  
pp. 1365-1368 ◽  
Author(s):  
Mirosław Bonek ◽  
Grzegorz Matula ◽  
Leszek Adam Dobrzański
Keyword(s):  
Surface Layer ◽  
High Speed ◽  
Steel Surface ◽  
Structure Refinement ◽  
High Speed Steel ◽  
Laser Surface ◽  
Structure And Properties ◽  
Surface Layers ◽  
Metal Base ◽  
Protection Method

The purpose of this research paper is focused on the high speed steel surface layers improvement properties using HPDL laser. The paper present laser surface technologies, investigation of structure and properties of the high speed steel alloying with carbides using high power diode laser HPDL. Investigation indicate the influence of the alloying carbides on the structure and properties of the surface layer of investigated steel depending on the kind of alloying carbides and power implemented laser (HPDL). In the effect of laser alloying with powder of carbides occurs size reduction of microstructure as well as dispersion hardening through fused in but partially dissolved carbides and consolidation through enrichment of surface layer in alloying additions coming from dissolving carbides. Introduced particles of carbides and in part remain undissolved, creating conglomerates being a result of fusion of undissolved powder grains into molten metal base. The structural mechanism was determined of surface layers development, effect was studied of alloying parameters, gas protection method, and thickness of paste layer applied onto the steel surface on structure refinement and influence of these factors on the mechanical properties of surface layer, and especially on its hardness, abrasive wear resistance, and roughness. It has the important cognitive significance and gives grounds to the practical employment of these technologies for forming the surfaces of new tools and regeneration of the used ones.

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

2017 ◽  
Vol 2 (86) ◽  
pp. 56-85 ◽  
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.

Electrospark alloying followed by laser treatment of high-speed steel cutting tools

1996 ◽  
Vol 35 (5-6) ◽  
pp. 227-230
Author(s):  
M. S. Koval'chenko ◽  
A. V. Paustovslii ◽  
V. P. Botvinko ◽  
A. P. Tamarov
Keyword(s):  
Laser Treatment ◽  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Electrospark Alloying ◽  
Steel Cutting
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