Features of the structure and properties of high-speed steels after laser treatment

1985 ◽  
Vol 27 (8) ◽  
pp. 616-621 ◽  
Author(s):  
V. S. D'yachenko
Keyword(s):  
Laser Treatment ◽  
High Speed ◽  
Structure And Properties

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.

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

scholarly journals Structure and properties of an Al alloy in as-cast state and after laser treatment

2016 ◽  
Vol 65 (2) ◽  
pp. 107 ◽  
Author(s):  
M Król ◽  
P Snopiński ◽  
B Tomiczek ◽  
T Tański ◽  
W Pakieła ◽  
...  
Keyword(s):  
Laser Treatment ◽  
Al Alloy ◽  
Structure And Properties ◽  
Cast State

scholarly journals High speed friction welding of titanium alloys — structure and properties of joints

2018 ◽  
Vol 2018 (6) ◽  
pp. 47-50
Author(s):  
D. Miara ◽  
◽  
J. Matusiak ◽  
A. Pietras ◽  
M. Krystian ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Friction Welding ◽  
High Speed ◽  
Structure And Properties

scholarly journals Improving Properties of Tool Steels by Method of Dynamic Alloying

2019 ◽  
Vol 18 (5) ◽  
pp. 369-379
Author(s):  
A. S. Kalinichenko ◽  
V. I. Ovchinnikov ◽  
S. M. Usherenko ◽  
Javad F. Yazdani-Cherati
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Matrix Material ◽  
Amorphous State ◽  
High Speed Steel ◽  
Deep Penetration ◽  
Structure And Properties ◽  
Tool Steels ◽  
Particle Flows ◽  
Dynamic Processing

The influence of high-speed particle fluxes on changes in the structure and properties of materials has been widely studied currently. The effect exerted by particles moving at very high speeds can have both negative (in spacecrafts) and positive character (dynamic processing of tool steels). Therefore a task for studying an effect of high-speed particle flows on structure change in tool steels and improving their performance properties has been set in the paper. The study has used an explosive method for creation of a high-speed flow of SiC + Ni and Al2O3 particles. Samples after dynamic alloying have been subjected to diffusion nitriding. Microstructure of specimens made of X12M, R18, R6M5K5steel has been studied using optical and electron metallography. Wear resistance of the samples has been also tested on a friction machine. Theoretical and experimental results on a complex effect of high-speed microparticle flows and nitriding on a structure and properties of tool steels have been obtained during the research. It has been established that dynamic alloying by particles leads to formation of a specific structure in a composite material reinforced with channels. Central fiber (channel) zone with powder particles residues is surrounded by areas of amorphous state which is succeeded by a zone with a nanocrystalline fragmented cellular structure. Then we observe a zone with a microcrystalline structure that transits to a zone with crystalline structure which is characteristic for a matrix material of structural steel. The obtained data can expand and complement some ideas about mechanisms for dynamic loading of solids and condensed matter, plastic deformation, physical mechanics of structurally inhomogeneous media at different levels, a number of effects arising from collision and ultra-deep penetration of microparticles into metals. It has been shown that wear resistance of high-speed steel subjected to dynamic alloying in the quenched state is increased by 1.2 times in comparison with wear resistance of steel alloyed in the annealing state.

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