Adhesive Wear of Duplex-Treated Tool and Structural Steels

2008 ◽  
Author(s):  
Jan Sucha´nek ◽  
Peter Jurcˇi
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Plasma Nitriding ◽  
Processing Parameters ◽  
Ceramic Coatings ◽  
Pulse Plasma ◽  
High Wear Resistance ◽  
Pvd Coatings ◽  
Pvd Coating ◽  
Subsurface Layers

Thin ceramic coatings deposited on the surface of tools and machine parts by PVD methods improve considerably their tribological properties. However these hard brittle coatings can be damaged rapidly if plastic deformation initiates in the substrate near the coating-substrate interface when subject to a relatively high load. The logical way how to treat such problems is improvement of the mechanical characteristics of subsurface layers by heat treatment or thermo-chemical treatment such as plasma nitriding. The typical duplex process involves plasma nitriding and PVD coating treatment of steels. Thickness of the nitride layers depends on the activity of nitrogen in the plasma, process temperature and time. The type and thickness of nitrides can influence considerably the quality of the deposited PVD coatings and their adhesion to a nitrided substrate. High-speed steels and Cr-V ledeburitic steels were plasma nitrided and duplex-coated (pulse plasma nitriding + PVD TiN or CrN coating) at various combinations of processing parameters. The wear resistance of the non-nitrided, PVD coated and duplex-coated steel surface was examined by ring-on-plate and plate-on-plate tribological testers. The effect of subsequent PVD–coating performed on plasma nitrided specimens can be considered as very positive when the specimens were severe loaded. The tested duplex treated low-alloy steel 31CrMoV9 was pulse plasma nitrided and then coated by different PVD coatings (TiN, CrN, TiAlN and (CrN-TiN)x3). The results of tribological tests (ring-on-plate tribometer) confirmed the high wear resistance of duplex treated steels.

YSS HAP72

Alloy Digest ◽  
2019 ◽  
Vol 68 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Powder Metallurgy ◽  
Tool Steel ◽  
High Speed ◽  
High Wear Resistance ◽  
Bend Strength ◽  
Temperature Performance ◽  
Very High

Abstract YSS HAP72 is a powder metallurgy high-speed tool steel with a very high wear resistance. This datasheet provides information on composition, hardness, and bend strength. It also includes information on high temperature performance. Filing Code: TS-779. Producer or source: Hitachi Metals America Ltd.

Wear-Resistance of Nitrided W-Mo-High Speed Steel in Abrasive Wear Conditions

2013 ◽  
Vol 594-595 ◽  
pp. 1117-1121
Author(s):  
Мazhyn Skakov ◽  
Bauyrzhan Rakhadilov ◽  
Merey Rakhadilov
Keyword(s):  
Wear Resistance ◽  
Surface Layer ◽  
Abrasive Wear ◽  
High Speed ◽  
Steel Surface ◽  
Plasma Nitriding ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Abrasive Wear Resistance ◽  
R6m5 Steel

In this work the influence of electrolytic-plasma nitriding on the abrasive wear-resistance of R6M5 high-speed steel were under research. We registered that after electrolytic-plasma nitriding on R6M5 steel surface modified layer is formed with 20-40 μm thickness and with increased microhardness of 9000-12200 MPa. Testing mode for the nitrided samples high-speed steel on abrasive wear developed. It is established, that electrolyte-plasma nitriding allows to increase wear-resistance of R6M5 steel surface layer comparing to original. It was determined that abrasive wear-resistance of R6M5 steel surface layer is increased to 25% as a result of electrolytic plasma nitriding. Thus, studies have demonstrated the feasibility and applicability of electrolytic-plasma nitriding in order to improve cutting tools work resource, working under friction and wear conditions.

CRUCIBLE REX M4

Alloy Digest ◽  
2021 ◽  
Vol 70 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Carbon Content ◽  
Tool Steel ◽  
High Speed ◽  
Cold Work ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Maximum Performance

Abstract Crucible REX M4 is a special-purpose high-speed tool steel that is designed to provide high wear resistance in tools. Its high vanadium and carbon content provides superior resistance to cratering and wear in cold work punches, die inserts, and cutting applications involving high speed and light cuts. It is designed to give maximum performance while working with abrasive materials, exhibiting better wear resistance than Types M2 or M3. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-812. Producer or source: Crucible Industries LLC.

CPM REX M4

Alloy Digest ◽  
1973 ◽  
Vol 22 (11) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Excellent Quality ◽  
Metallurgy Process ◽  
Specialty Metals

Abstract CPM REX M4 is a special-purpose high-speed steel designed to give high wear resistance in tools. It is made exclusively by Crucible's particle metallurgy process which imparts excellent quality and grindability. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-264. Producer or source: Crucible Specialty Metals Division, Colt Industries.

MOLITE 4

Alloy Digest ◽  
1985 ◽  
Vol 34 (9) ◽  
Keyword(s):  
Wear Resistance ◽  
High Speed ◽  
Thin Sheet ◽  
High Speed Steel ◽  
Heat Treating ◽  
Cold Extrusion ◽  
High Wear Resistance ◽  
Red Hardness ◽  
Twist Drills ◽  
Very High

Abstract MOLITE 4 is a high-carbon, high-vanadium, tungsten-molybdenum high-speed steel that approaches the ultimate in wear resistance for high-speed steels in this group. The advantages in using this steel comprise (1) Very high wear resistance, (2) High red hardness, (3) Good toughnes and (4) Moderate grindability. Among its many uses are punches and dies for blanking and forming thin sheet, milling cutters, twist drills, reamers, forming rolls, cold-extrusion punches and draw dies. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-447. Producer or source: Columbia Tool Steel Company.

Pulse Plasma Nitriding For Plasma Vapour Deposition Coating of High Speed Steels

2004 ◽  
Vol 20 (3) ◽  
pp. 167-173 ◽  
Author(s):  
M. Bolton ◽  
J. Cockrem ◽  
A. Farinotti
Keyword(s):  
High Speed ◽  
Vapour Deposition ◽  
Plasma Nitriding ◽  
Pulse Plasma

scholarly journals Investigations on Wear Mechanisms of PVD Coatings on Carbides and Sialons

2017 ◽  
Vol 62 (4) ◽  
pp. 2095-2100 ◽  
Author(s):  
M. Staszuk ◽  
D. Pakuła ◽  
M. Pancielejko ◽  
T. Tański ◽  
L.A. Dobrzański
Keyword(s):  
Wear Resistance ◽  
High Wear Resistance ◽  
Pvd Coatings ◽  
Properties Of Coatings ◽  
Sintered Carbide ◽  
Fine Grained ◽  
Coated Tools ◽  
High Adhesion ◽  
High Microhardness ◽  
Fine Grained Structure

AbstractThe paper presents the results on the wear resistance of PVD coatings on cutting inserts made from sintered carbide and sialon ceramics. The exploitative properties of coatings in technological cutting trials were defined in the paper, which also examined the adhesion of coatings to the substrate, the thickness of the coating, and the microhardness. As a result, it was found that isomorphic coating with AlN-h phase of covalent interatomic bonds exhibits much better adhesion to the sialon substrate than isomorphic coating with titanium nitride TiN. These coatings assure the high wear resistance of the coated tools, and the high adhesion combined with the high microhardness and fine-grained structure assure an increase in the exploitative life of the coated tools. In the case of coatings on substrate made from sintered carbide, there was a significant influence on the properties of the tools coated with them as concerns the existence of the diffusion zone between the substrate and the coating.

The Analyse of Nanocomposite Thin Coatings Using Specimens Prepared by Focused Ion Beam Milling

2017 ◽  
Vol 891 ◽  
pp. 579-585
Author(s):  
Dagmar Jakubéczyová ◽  
Beáta Ballóková
Keyword(s):  
Cross Sections ◽  
Focused Ion Beam ◽  
Vapour Deposition ◽  
Plasma Nitriding ◽  
Ion Beam ◽  
Modern Technology ◽  
Pvd Coatings ◽  
Thin Coatings ◽  
Pvd Coating ◽  
Dual Beam

The microstructure of physical vapour deposition (PVD) coatings deposited by duplex technology was investigated by Dual Beam FIB/SEM system (focused ion beam / scanning electron microscope), which allows one to examine cross sections of specimens from their surface down to the substrate. Examined were PVD coatings of nanocomposite type: duplex AlXN3 (X=Cr) and duplex nACRo3, deposited by LARC and CERC technologies. Duplex coating is a modern technology, which combines plasma nitriding and PVD coating in one cycle. The FIB analysis can be widely used in the field of study of basic materials and technological applications as it is based on highly focused ion beam which enables accurate machining of the investigated specimens and flexible processing at a micro/nanometric level. Cross sections of specimens obtained by FIB-SEMs document the arrangement of individual deposited nanomultilayers within the nanocomposite coatings and their EDS analysis in specific locations.

scholarly journals Wear Resistance of Ti–6Al–4V Alloy Ball Heads for Use in Implants

2021 ◽  
Vol 12 (4) ◽  
pp. 65
Author(s):  
Svetlana Skvortsova ◽  
Aleksei Orlov ◽  
Georgii Valyano ◽  
Victor Spektor ◽  
Natalia Mamontova
Keyword(s):  
Wear Resistance ◽  
Plasma Nitriding ◽  
High Wear Resistance ◽  
Titanium Nitrides ◽  
Interstitial Solution ◽  
Ion Plasma ◽  
Material Wear ◽  
Ultra High Molecular Weight ◽  
Hardness Values

The effect of thermohydrogen treatment and vacuum ion–plasma nitriding on the determination of the volume and surface structure of ball heads made of Ti–6Al–4V alloy was studied. It was found that the submicrocrystalline structure formed in the head during thermohydrogen treatment makes it possible to achieve hardness values of 39–41 units HRC and a surface roughness of 0.02 μm. It was shown that the creation of a modified layer consisting of ε (TiN) and δ (Ti2N) titanium nitrides on the surface of a ball head and the solid interstitial solution of nitrogen in α-titanium makes it possible to completely eliminate material wear when testing for friction on ultra-high-molecular-weight polyethylene. The equivalent analysis was also conducted with a ball head that had been implanted in a human body for 12 years. It was found that the change in the color of the head, from slightly golden after nitriding to metallic, is due to the formation of an oxynitride nanoscale layer on the surface. It was shown that in contrast with films made of titanium oxide, the film developed in this study has high wear resistance.

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