The Wear Resistance of Mottled Iron with Stabilized Carbide Phase

2017 ◽  
Vol 265 ◽  
pp. 22-26
Author(s):  
S.V. Davydov ◽  
A.O. Gorlenko
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Phase Composition ◽  
Structural Component ◽  
Carbide Phase ◽  
Outer Shell ◽  
Wear Resistant ◽  
Phase Dissolution ◽  
Compositional Structures ◽  
Copper Chromium

There is investigated the wear resistance of mottled irons with stabilized carbide phase, obtained by alloying iron with copper, chromium and sulfur. It is shown that during heat treatment the outer shell of the carbide phase inclusions, destabilized with copper, dissolves, leaving a core stabilized with chromium. Carbon from the carbide phase dissolution coats the surface of manganese sulphide inclusions, forming additional wear-resistant structural component of mottled iron. The resulting structures can be attributed to compositional structures, which morphology and phase composition can be controlled by alloying and heat treatment.

scholarly journals Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Van Tuan Nguyen ◽  
Quy Le Thu ◽  
Tuan Anh Nguyen ◽  
Quoc Cuong Ly ◽  
Ly Pham Thi ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Phase Composition ◽  
Corrosion Test ◽  
Annealing Temperature ◽  
Alloy Coating ◽  
Aluminum Phosphate ◽  
Annealing Temperatures ◽  
Wear And Corrosion

This study presents the effect of heat treatment on porosity, phase composition, microhardness, and wear and corrosion resistances of the thermal sprayed NiCr20 coating after sealing with aluminum phosphate. The annealing temperatures were varied in a range of 400 to 1000°C. The obtained results indicated the porosity of coating decreased with increasing the annealing temperature. After treatment at temperatures in range of 800-1000°C, more than 90% of initial pores in the coating were successfully filled with the sealants. The XRD data revealed not only the formation of new phases of other compounds, but also the interaction between coating and sealant. After heat treatment, wear resistance of coating was 12 times higher than that without heat treatment. The corrosion test in H2SO4 solution indicated that the presence of sealant in coatings increased their corrosion resistance. From these findings, application of these NiCr20 coatings to protect steel against wear and corrosion appears very promising.

TLS D2

Alloy Digest ◽  
2008 ◽  
Vol 57 (2) ◽  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Physical Properties ◽  
Tool Life ◽  
Tool Steel ◽  
Heat Treating ◽  
Size Change ◽  
Wear Resistant

Abstract TLS D2 is the most wear resistant of the commonly available grades of tool steel. It is deep hardening and has very low size change during heat treatment. However, because of its excellent wear resistance, it produces a low machinability rating. It is chosen when long tool life is required. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-660. Producer or source: Timken Latrobe Steel.

Heat Treatment of Wear Resistant Steels for Mud Pumps

2016 ◽  
Vol 870 ◽  
pp. 181-184 ◽  
Author(s):  
S.M. Nikiforova ◽  
M.A. Filippov ◽  
A.S. Zhilin
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
High Temperature ◽  
High Temperatures ◽  
Residual Austenite ◽  
Work Place ◽  
Temperature Quenching ◽  
Wear Resistant ◽  
Friction Hardening

Influence of different type heat treatment including high temperature quenching on wear resistance has been investigated. The two investigated steels are widely used in production of mud pumps. It was shown that Kh12MFL had better wear resistance in comparison with 150KhNML. Martensitic-carbide structure of the steels formed by quenching from high temperatures (900 – 1000 °С) induced good hardness (61 – 64 HRC). Analysis of the residual austenite contents influence on wear resistance was also made. It was determined that residual austenite formed after high temperature quenching (900 – 1000 °С) was metastable and had tendency to transform into carbon containing martensite of deformation. This allowed steels to have maximum wear resistance because of providing high abilities to friction hardening of the work place of the sample.

scholarly journals WAYS TO OPTIMIZE WEAR RESISTANCE OF LAYERS DEPOSITED BY MELTING

2021 ◽  
Vol 1 (66) ◽  
pp. 34-39
Author(s):  
M. Krukovich ◽  
A. Fedotova ◽  
G. Kazakevich
Keyword(s):  
Wear Resistance ◽  
Phase Composition ◽  
Processing Temperature ◽  
Energy Costs ◽  
Multicomponent Systems ◽  
Wear Resistant ◽  
Melting Temperatures ◽  
Operational Characteristics ◽  
Scientific Substantiation ◽  
Optimal Melting

The analysis of the technology for obtaining deposited by melting wear-resistant layers is carried out and the main disadvantages that reduce the operational characteristics are noted. The possibility of scientific substantiation for the choice of the processing temperature and the required concentrations of the initial elements of multicomponent systems by calculating eutectic temperatures and concentrations, as well as by constructing schema of diagrams of multicomponent systems is shown. The choice of the optimal melting temperatures of continuous or discrete layers reduces energy costs and determines the phase composition of the layers and their operational properties.

Combined Methods of Laser Processing of Steel

2018 ◽  
Vol 284 ◽  
pp. 242-246
Author(s):  
Yu.S. Bakhracheva
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Phase Composition ◽  
Laser Processing ◽  
Laser Hardening ◽  
High Wear Resistance ◽  
Laser Heat Treatment ◽  
Surface Layers ◽  
Laser Heat ◽  
Composition Structure

This article examines the influence of laser heat treatment of nitrocementation steel on the phase composition, structure and hardness of surface layers. It is shown that the combined heat treatment of steels – nitrocementation and laser hardening allows to provide high wear resistance of surface layers of steel.

scholarly journals The Effect of Vanadium Content Coupling with Heat Treatment Process on the Properties of Low-Vanadium Wear-Resistant Alloy

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 285
Author(s):  
Tao Jiang ◽  
Shizhong Wei ◽  
Liujie Xu ◽  
Cheng Zhang ◽  
Xiaodong Wang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Manufacturing Industry ◽  
High Hardness ◽  
Bimodal Distribution ◽  
Vanadium Content ◽  
Homogeneous Distribution ◽  
Wear Property ◽  
Wear Resistant ◽  
Resistant Alloy

The development of wear-resistant materials with excellent properties is of great research value in the manufacturing industry. In this paper, a new kind of low-vanadium wear-resistant alloy was designed and characterized to unveil the influence of vanadium content coupling with heat treatment on the microstructure, hardness, and abrasive wear property. The performances of commercial high chromium cast iron (HCCI) and the new low-vanadium wear-resistant alloy are compared. The alloy with 3 wt.% vanadium quenched at 900 °C and tempered at 250 °C, possessing VC, Mo2C, and M7C3 distributed in the martensite matrix, displayed a wear resistance two times better than the HCCI. The results showed that the increase of vanadium content from 0.98 wt.% to 3.00 wt.% resulted in a decrease in the size of M7C3 and a more homogeneous distribution of M7C3. VC with a bimodal distribution is effective for impeding grooving or indenting by abrasives because of their high hardness, which plays a vital role in improving the wear resistance of low-vanadium wear-resistant alloy.

scholarly journals Improvement of wear-resistant properties of steel 30Н3MF with additional microalloying

2021 ◽  
pp. 81-86
Author(s):  
A. Z. Issagulov ◽  
Sv. S. Kvon ◽  
V. Yu. Kulikov ◽  
A. M. Dostaeva ◽  
E. P. Shcherbakova ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Metal Matrix ◽  
Experimental Alloy ◽  
Structural Components ◽  
Wear Resistant ◽  
Furnace Treatment ◽  
Metallic Inclusions ◽  
Microstructural Studies ◽  
Resistance Improvement

One of the directions of wear resistance improvement is microalloying of improved steels. In the studies conducted, the feasibility of adjusting the composition of steel 30Н3MF was determined by additional microalloying of V + Nb in order to give it wear-resistant properties. Microstructural studies of the experimental alloy were carried out. The microstructure is fairly uniform, represented by a matrix and inclusions. Matrix is represented by doped solution, which includes nickel. It is determined that in a chemically and structurally inhomogeneous ingot, even after heat treatment, structural components will remain. Characteristics such as the amount, morphology and distribution of non-metallic inclusions in the metal matrix are mainly laid at the stage of metal discharge from the steelmaking unit, as well as in the process of deoxidation and modification of steel during its off-furnace treatment.

scholarly journals HEAT TREATMENT OF WEAR RESISTANT STEELS FOR DRILLING RIG PUMPS

2015 ◽  
pp. 116-120
Author(s):  
S. M. Nikiforova ◽  
M. A. Filippov ◽  
G. N. Plotnikov ◽  
A. S. Zhilin ◽  
S. V. Belikov
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
High Temperature ◽  
Residual Austenite ◽  
High Ability ◽  
Temperature Quenching ◽  
Wear Resistant ◽  
Drilling Rig ◽  
Working Surface ◽  
Frictional Hardening

The influence of heat treatment different options on wear resistance of steels of trademarks Kh12MFL and 150KhNML applied in manufacturing of mud pumps is reviewed. It is shown that the steel Kh12MFL is superior in wear resistance than the steel 150KhNML at abrasion. The martensite-carbide structure of both steels obtained at quenching at normal temperatures, from 900 to 1000 0С, ensures a good hardness (61-64 HRC). The analysis of the residual austenite contents influence on wear resistance was also made. It was determined that residual austenite formed after high temperature quenching (110-1170 0С) was metastable and had a tendency to transform into carbon containing martensite of deformation in the process abrasive wearing. This allowed steels to have a maximum wear resistance because of ensuring a high ability to frictional hardening of the working surface.

SWEBOR 400

Alloy Digest ◽  
2014 ◽  
Vol 63 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Tensile Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Bend Strength ◽  
Great Strength ◽  
Wear Resistant

Abstract Swebor 400 (hardness 400 HBW) is a high-strength steel with good wear resistant qualities. This alloy is used to endure conditions of extra-heavy wear and when great strength and good weldability is required. This datasheet provides information on composition, hardness, tensile properties, and bend strength as well as fracture toughness. It also includes information on wear resistance as well as forming, machining, and joining. Filing Code: CS-181. Producer or source: Swebor Stål Svenska AB.

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