Effects of Carbide Morphology and Heat Treatment on Abrasion Wear Resistance of Chromium White Cast Irons

The article proposes possible increase of durability of tool steel X210Cr12 as regards working conditions under consideration of abrasive wear. From such steel tools are made for pressing wooden briquettes and saw dust waste. In practical environment a condition is held that if a material should work in abrasive wear conditions, it should have high hardness and should contain carbides in the structure. The proposed paper deals with the heat and chemical-heat treatment (nitriding) of tool steel which is working in hard abrasive wear conditions. From the obtained results it is not easy to conclude a definitive conclusion or to set the boundaries between the factors that are responsible for wear resistance. It is shown that the chemical-heat treatment can in the last step of the heat treatment lead to an increase or even to a decrease in the abrasive wear resistance of the material. The aim of the paper is to set a proper heat treatment of materials used for pressing in abrasion wear conditions.

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Influence of Particle Reinforcement and Heat Treatment on the Wear Resistance of Inductively Melted Hardpaint Coatings

Metals ◽

10.3390/met10070968 ◽

2020 ◽

Vol 10 (7) ◽

pp. 968

Author(s):

Patrick Schwarz ◽

Sebastian Weber ◽

Friederike Deuerler

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

Laser Scanning ◽

Wear Behavior ◽

Cryogenic Treatment ◽

Laser Scanning Microscopy ◽

Economic Damage ◽

Tungsten Carbides ◽

Protective Layers ◽

Abrasion Wear

Wear-resistant coatings can reduce the high economic damage caused by wear processes. In this study, various protective layers based on the alloy X400CrVMo17-15-2 were investigated. Commonly, the prealloyed metal powder is used for plasma transferred arc powder surfacing. However, in this work, the cost-efficient hardpaint technology was used to produce particle-reinforced (fused tungsten carbides) and non-reinforced coatings. To analyze the wear behavior, the coatings were subjected to abrasion wear and scratch tests. For the abrasion wear test, a grinding pin (Al2O3) is pressed with a defined force against the surface of the rotating sample for 6 h. For the scratch test, a loaded diamond pyramid indenter was employed to create a circular groove on the coatings at a predefined speed. The wear grooves were analyzed with the aid of laser scanning microscopy. In comparison to the coatings in the as-processed condition, the non-reinforced protective layers were investigated after quenching, with and without deep cryogenic treatment, and tempering. The determination of proper heat treatment parameters was supported by computational thermodynamics. It has been confirmed that it is possible to improve the wear resistance of the unreinforced coatings by heat treatment. However, the reinforced layers showed the highest resistance against abrasion.

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Cryogenic heat treatment — a review of the current state

Metallurgical and Materials Engineering ◽

10.30544/238 ◽

2017 ◽

Vol 23 (1) ◽

pp. 1-10 ◽

Cited By ~ 7

Author(s):

Kamran Amini ◽

Amin Akhbarizadeh ◽

Sirus Javadpour

Keyword(s):

Crystal Structure ◽

Heat Treatment ◽

Wear Resistance ◽

Room Temperature ◽

Liquid Nitrogen Temperature ◽

Cast Irons ◽

Current State ◽

Noticeable Improvement ◽

The Common ◽

Cryogenic Heat Treatment

The deep cryogenic heat treatment is an old and effective heat treatment, performed on steels and cast irons to improve the wear resistance and hardness. This process includes cooling down to the liquid nitrogen temperature, holding the samples at that temperature and heating at the room temperature. The benefits of this process are significant on the ferrous materials, but recently some studies focused on other nonferrous materials. This study attempts to clarify the different behavior of some materials subjected to the deep cryogenic heat treatment, as well as explaining the common theories about the effect of the cryogenic heat treatment on these materials. Results showed that polymers exhibit different behavior regarding to their crystallinity, however the magnesium alloys, titanium alloys and tungsten carbide show a noticeable improvement after the deep cryogenic heat treatment due to their crystal structure.

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The Abrasion Behaviour of X40CrMoV5-1 Steel Under Various Surface Treatments

Acta Materialia Transilvanica ◽

10.33924/amt-2020-01-09 ◽

2020 ◽

Vol 3 (1) ◽

pp. 50-54

Author(s):

László Tóth ◽

Tünde Kovács ◽

Zoltán Nyikes ◽

Mhatre Umesh

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

Surface Layer ◽

Surface Treatment ◽

Surface Hardness ◽

Surface Treatments ◽

Plasma Nitridation ◽

Pvd Coating ◽

Abrasion Wear ◽

Wear Tests

AbstractFor evolving a surface layer on the X40CrMoV5-1 steel, a plasma-nitridation and PVD coating process was applied. In our experiments, the samples were heat-treated (high-temperature hardening, annealed three times) and surface treatments (plasma-nitridation, PVD coating by TiAlN, duplex surface treating by plasma nitridation and after that, PVD coating TiAlN). After the heat treatments, we performed hardness tests and surface abrasion wear tests. The abrasion wear resistance of the specimens was studied in order to understand the heat treatment effects on abrasion behaviour. It was observed that the heat treatment and surface treatment process greatly influence the tool steel surface hardness and abrasion resistance behaviour. By plasma-nitridation the surface hardness doubled compared to the quenched surface hardness while the PVD coated TiAlN surface layer hardness is more than five times that of the hardened one. There was no relevant difference between the PVD coated (TiAlN) surface hardness and the duplex surface-treated hardness. On the basis of the results of the comparative abrasive wear tests, it can be concluded that the duplex surface treatment resulted in the greatest wear resistance..

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CYCLOPS SCK

Alloy Digest ◽

10.31399/asm.ad.ts0346 ◽

1979 ◽

Vol 28 (3) ◽

Keyword(s):

Heat Treatment ◽

Wear Resistance ◽

Physical Properties ◽

Tool Steel ◽

Cold Work ◽

Heat Treating ◽

Optimum Combination ◽

Cold Work Tool Steel ◽

Minimum Distortion

Abstract CYCLOPS SCK is a cold-work tool steel with a balanced composition to provide air hardening and an optimum combination of toughness, wear resistance and minimum distortion during heat treatment. Typical applications are shear blades, trimming dies and forming rolls, including grade rolls for cutlery and flatware. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-346. Producer or source: Cyclops Corporation.

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DEWARD

Alloy Digest ◽

10.31399/asm.ad.ts0310 ◽

1976 ◽

Vol 25 (12) ◽

Keyword(s):

Heat Treatment ◽

Fracture Toughness ◽

Wear Resistance ◽

Compressive Strength ◽

Physical Properties ◽

Heat Treating ◽

Die Steel ◽

Satisfactory Performance ◽

Specialty Steel ◽

Minimum Distortion

Abstract DEWARD is an oil-hardening, non-deforming, manganese die steel that is characterized by uniformity, good machinability and satisfactory performance in service. Its composition permits a relatively low hardening temperature to give minimum distortion after heat treatment and little danger of cracking. It has good wear resistance and gives excellent results when used for all kinds of intricate tools. This datasheet provides information on composition, physical properties, hardness, elasticity, and compressive strength as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-310. Producer or source: AL Tech Specialty Steel Corporation.

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