Effect of vanadium content on the microstructure and wear behavior of Fe(13-)VxB7 (x = 0–5) based hard surface alloy layers

In this study, the effects of titanium addition on microstructure, hardness and wear rate of Fe(13-x)TixB7 (x = 0, 1, 2, 3 and 5) based hard surface alloy layers formed by gas tungsten arc (GTA) welding method were investigated. As a result of the microstructure studies and phase analysis, it was determined that the structures of the coating layers consisted of ?-Fe, ?Fe+Fe2B eutectic, ?-Fe+Fe2Ti eutectic and hard TiB2 phases. In the hard surface alloy layer, as the amount of titanium was increased, the TiB2 phase density formed in the system increased and it was observed that rod-like and long sharp-edged phases formed from the equiaxed structure. As a result of wear tests performed at different loads, it was determined that the addition of titanium reduces the wear rates in the coating layers. In addition, scanning electron microscopy (SEM) images of the worn surfaces showed that the wear mechanisms were adhesive and oxidative.

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Effect of heat treatment on properties of nickel hard surface alloy deposited by hvof

Surface Engineering ◽

10.1179/026708400101517404 ◽

2000 ◽

Vol 16 (5) ◽

pp. 415-420 ◽

Cited By ~ 8

Author(s):

M. Rodriguez ◽

M. Staia ◽

L. Gil ◽

F. Arenas ◽

A. Scagni

Keyword(s):

Heat Treatment ◽

Surface Alloy ◽

Hard Surface

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Microstructure and Wear Behavior of Laser Processed Co-Cr-W/Steel Surface Alloys

MRS Proceedings ◽

10.1557/proc-80-331 ◽

1986 ◽

Vol 80 ◽

Author(s):

Jiang Xiaoping ◽

Hu Zhuangqi ◽

Ge Yunlong ◽

Jiang Ming ◽

Shih Changxu

Keyword(s):

Wear Resistance ◽

Wear Behavior ◽

Alloy System ◽

Surface Alloy ◽

Surface Alloys ◽

Melting Depth ◽

Corrosive Media ◽

Sprayed Coating ◽

Plasma Sprayed ◽

Better Than

AbstractSurface alloys with various compositions of Co, Cr and W on 20CrMo steel have been processed by controlling the ratio of thickness of plasma sprayed Co-Cr-W coating to laser melting depth. A formula has been suggested to evaluate the contents of surface alloying elements. With increasing the contents of Co, Cr and W in the surface alloy system, two hardness peaks occur at about 17Co7Cr3W and 52Co22CrgW corresponding to microstructure of M and γ-Co + M23C6 respectively. Wear experiments in media of air, 1N H2SO4 and 1% NaCl indicate that 17Co7Cr3W surface alloy has higher wear resistance in air, while 52Co22Cr9W better in the corrosive media under high load. In any case, wear resistance of the above two surface alloys are much better than that of plasma sprayed coating of Co-Cr-W.

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Vanadium Additions to a High-Cr White Iron and its Effects on the Abrasive Wear Behavior.

MRS Advances ◽

10.1557/adv.2020.414 ◽

2020 ◽

Vol 5 (59-60) ◽

pp. 3077-3089

Author(s):

Alexeis Sánchez ◽

Arnoldo Bedolla-Jacuinde ◽

Francisco V. Guerra ◽

I. Mejía

Keyword(s):

Heat Treatment ◽

Abrasive Wear ◽

Volume Fraction ◽

Wear Behavior ◽

Wear Behaviour ◽

White Iron ◽

Heat Treated ◽

Bulk Hardness ◽

Abrasive Wear Behavior ◽

Vanadium Carbides

AbstractFrom the present study, vanadium additions up to 6.4% were added to a 14%Cr-3%C white iron, and the effect on the microstructure, hardness and abrasive wear were analysed. The experimental irons were melted in an open induction furnace and cast into sand moulds to obtain bars of 18, 25, and 37 mm thickness. The alloys were characterized by optical and electronic microscopy, and X-ray diffraction. Bulk hardness was measured in the as-cast conditions and after a destabilization heat treatment at 900°C for 45 min. Abrasive wear resistance tests were undertaken for the different irons according to the ASTM G65 standard in both as-cast and heat-treated conditions under a load of 60 N for 1500 m. The results show that, vanadium additions caused a decrease in the carbon content in the alloy and that some carbon is also consumed by forming primary vanadium carbides; thus, decreasing the eutectic M7C3 carbide volume fraction (CVF) from 30% for the base iron to 20% for the iron with 6.4%V;but overall CVF content (M7C3 + VC) is constant at 30%. Wear behaviour was better for the heat-treated alloys and mainly for the 6.4%V iron. Such a behaviour is discussed in terms of the CVF, the amount of vanadium carbides, the amount of martensite/austenite in matrix and the amount of secondary carbides precipitated during the destabilization heat treatment.

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Wear behavior of laser cladded WC-FeAl coating on 321 stainless steel substrate

Journal of Laser Applications ◽

10.2351/7.0000219 ◽

2020 ◽

Vol 32 (4) ◽

pp. 042015

Author(s):

Alireza Mostajeran ◽

Reza Shoja-Razavi ◽

Morteza Hadi ◽

Mohammad Erfanmanesh ◽

Hadi Karimi

Keyword(s):

Stainless Steel ◽

Stainless Steel Substrate ◽

Wear Behavior ◽

Steel Substrate

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Effect of High Temperature on Wear Behavior of Stir Cast Aluminium/Boron Carbide Composites

Mechanics and Mechanical Engineering ◽

10.2478/mme-2018-0082 ◽

2020 ◽

Vol 22 (4) ◽

pp. 1031-1046

Author(s):

X. Canute ◽

M. C. Majumder

Keyword(s):

High Temperature ◽

Wear Rate ◽

Boron Carbide ◽

Wear Behavior ◽

Base Alloy ◽

Weight Fraction ◽

Sliding Velocity ◽

Wear Properties ◽

High Temperature Wear ◽

The Matrix

AbstractThe need for development of high temperature wear resistant composite materials with superior mechanical properties and tribological properties is increasing significantly. The high temperature wear properties of aluminium boron carbide composites was evaluated in this investigation. The effect of load, sliding velocity, temperature and reinforcement percentage on wear rate was determined by the pin heating method using pin heating arrangement. The size and structure of base alloy particles change considerably with an increase of boron carbide particles. The wettability and interface bonding between the matrix and reinforcement enhanced by the addition of potassium flurotitanate. ANOVA technique was used to study the effect of input parameters on wear rate. The investigation reveals that the load had higher significance than sliding velocity, temperature and weight fraction. The pin surface was studied with a high-resolution scanning electron microscope. Regression analysis revealed an extensive association between control parameters and response. The developed composites can be used in the production of automobile parts requiring high wear, frictional and thermal resistance.

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