scholarly journals Effect of impact energy on wear behavior of high chromium white iron produced by liquid die forging

2018 ◽  
Vol 207 ◽  
pp. 03011
Author(s):  
B Qiu ◽  
S M Xing ◽  
Q Dong ◽  
H Liu
Keyword(s):  
Abrasive Wear ◽  
Impact Energy ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Testing ◽  
Volume Loss ◽  
White Iron ◽  
High Chromium ◽  
Die Forging ◽  
The Impact

Impact abrasive wear behavior of high chromium white iron (HCWI) produced by liquid die forging process were investigated. the wear tests were performed with the MLD-10 abrasive wear testing machine, using SiO2 abrasive and with four impact energies of 1.5 J, 2.5 J, 3.5 J and 4.5 J for 120 min. The results indicated that the cumulative volume loss of HCWI sample increases with the growth of impact energy, and exhibits best wear resistance under low impact condition. For given impact energy, the volume loss increases with the increasing of wear time, which shown an approximately liner tendency. The macro-morphologies, SEM images of worn surface and cross-sectional images of wear samples were observed by optical microscope and SEM, and the wear mechanism and characteristics were analyzed. Results shown that the wear characteristics is mainly based on the shallow ploughing and accompanied by plastic deformation under lower impact energy, while the fatigue peeling and embedded abrasive become the most significant characteristics when the impact energy is higher.

Wear and Corrosion Behaviours of FeCrNiSi Alloy Coatings by Laser Cladding

2017 ◽  
Vol 898 ◽  
pp. 1406-1413
Author(s):  
Yu Long Qi ◽  
Hai Yan Chen ◽  
Chen Yang Shu ◽  
Xuan Zhao ◽  
Li Hua Dong ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Abrasive Wear ◽  
Laser Cladding ◽  
Wear Behavior ◽  
Testing Machine ◽  
Three Dimensional ◽  
Xrd Analysis ◽  
Hard Coating ◽  
Wear Testing ◽  
Surface Mapping

Soft and hard FeCrNiSi alloy coatings were obtained on 30CrMo alloy steel surface by laser cladding. The phase constitution, microstructure, frictional wear behavior and corrosion resistance of the composite coating were analyzed using X-ray diffraction (XRD), scanning electron microscope (SEM), three-dimensional non-contact surface mapping, friction and wear testing machine and electrochemical workstation, separately. XRD analysis showed that the cladding layer was mainly composed of Fe-based alloy composition, accompanied by a small amount of cobalt nickel alloy. There were massive protrusions in the interface of the soft sample, and the coating was regularly dendritic. Hard sample coating lines were cluttered, and there was no bulk deposition. Under the same wear condition, the soft coating exhibited serious abrasive wear, while the hard coating had slight abrasive wear behavior. The polarization curves in 3%NaCl solution revealed that the self-corrosion potential of the soft coating was positive shifted more than that the hard coating. The soft coating has better corrosion resistance than the hard coating.

Wear behaviors of WC and TiC on co matrix composites under three-body impact abrasive wear condition

2019 ◽  
Vol 71 (7) ◽  
pp. 893-900 ◽  
Author(s):  
Lei Dong ◽  
Xiaoyu Zhang ◽  
Kun Liu ◽  
Xiaojun Liu ◽  
Ruiming Shi ◽  
...  
Keyword(s):  
Wear Rate ◽  
Abrasive Wear ◽  
Impact Energy ◽  
Wear Behavior ◽  
High Impact ◽  
Impact Wear ◽  
High Impact Energy ◽  
Content Type ◽  
Three Body ◽  
The Impact

Purpose The purpose of this paper is to investigate the tribological properties of the WC/TiC-Co substrate under different loading conditions under three impact abrasive wear conditions. Design/methodology/approach The three body collisional wear behavior of Co alloy with WC and TiC at three impact energy was studied from 1 to 3 J. Meanwhile, the microstructure, hardness, phase transformation and wear behavior of these specimens were investigated by scanning electron microscopy, Rockwell hardness (HRV), EDS and impact wear tester. The resulting wear rate was quantified by electronic balance measurements under different pressures. Findings The specific wear rate increases with the increase of the nonlinearity of the impact energy and the increase in the content of WC or TiC. The effect of TiC on wear rate is greater than that of WC, but the hardness is smaller. The wear characteristics of the samples are mainly characterized by three kinds of behavior, such as cutting wear, abrasive wear and strain fatigue wear. The WC-Co with fewer TiC samples suffered heavier abrasive wear than the more TiC samples under both low and high impact energy and underwent fewer strain fatigue wears under high impact energy. Originality/value The experimental results show that the wear resistance of the Co alloy is improved effectively and the excellent impact wear performance is achieved. The results can be used in cutting tools such as coal mine cutting machines or other fields.

Effects of tungsten on the microstructure and on the abrasive wear behavior of a high-chromium white iron

Wear ◽  
2017 ◽  
Vol 376-377 ◽  
pp. 77-85 ◽  
Author(s):  
E. Cortés-Carrillo ◽  
A. Bedolla-Jacuinde ◽  
I. Mejía ◽  
C.M. Zepeda ◽  
J. Zuno-Silva ◽  
...  
Keyword(s):  
Abrasive Wear ◽  
Wear Behavior ◽  
White Iron ◽  
High Chromium ◽  
Abrasive Wear Behavior

Microstructural Evolution and Wear Behavior Involving the K-Carbides Precipitation of a Fe-25Mn-6.6Al-1.3C Austenitic Steel

2018 ◽  
Vol 941 ◽  
pp. 668-673 ◽  
Author(s):  
Yi Fan Feng ◽  
Ren Bo Song ◽  
Zhong Zheng Pei ◽  
Lun Li
Keyword(s):  
Heat Treatment ◽  
Abrasive Wear ◽  
Austenitic Steel ◽  
Microstructural Evolution ◽  
Abrasion Resistance ◽  
Testing Machine ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Wear Testing ◽  
The Impact

In this paper, the microstructural evolution and mechanical properties of the as-cast Fe-25Mn-7Al-1.3C austenitic steel after different heat treatment were investigated. After solution treatment and subsequent aging treatment, the κ-carbides with perovskite structure were found to precipitate coherently within the austenite matrix, which improved the initial hardness and mechanical strength. The experimental steel exhibited an optimal comprehensive performance after being solution treated at 1050 °C for 1 h and then aged at 550 oC for 2 h. The tensile strength was 751 MPa, the yield strength was 581 MPa, the elongation was 48%, the hardness was 252 HB, and the Charpy V-notch impact toughness was 168 J, respectively. The impact wear test was carried out on MLD-10 abrasive wear testing machine, and the worn out surfaces under different heat treatment were characterized by scanning electron microscopy (SEM). The results indicated that the abrasion resistance of the steel under the additional aging treatment was better than that of the as-solutionized steel. The optimal abrasion resistance was obtained after being soluted at 1050 °C for 1 h and then aged at 550 oC for 2 h. However, with the aging time increasing, the coarse κ-carbides precipitating around the grain boundaries would deteriorate toughness, which lead to increase of the abrasive wear volume loss. Besides, obvious micro-cracking and relatively larger peeling pit were observed.

Abrasive Wear Performance of Aluminium Modified Epoxy-Glass Fiber Composites

2015 ◽  
Vol 03 (03n04) ◽  
pp. 1550005 ◽  
Author(s):  
Vikram G. Kamble ◽  
Punyapriya Mishra ◽  
Hassan A. Al Dabbas ◽  
H. S. Panda ◽  
Johnathan Bruce Fernandez
Keyword(s):  
Abrasive Wear ◽  
Glass Fiber ◽  
Wear Behavior ◽  
Fiber Composite ◽  
Matrix Material ◽  
Testing Machine ◽  
Wear Testing ◽  
Aluminum Particles ◽  
Pin On Disc ◽  
Modified Epoxy

For a long time, Aluminum filled epoxies molds have been used in rapid tooling process. These molds are very economical when applied in manufacturing of low volume of plastic parts. To improve the thermal conductivity of the material, the metallic filler material is added to it and the glass fiber improves the wear resistance of the material. These two important parameters establish the life of composites. The present work reports on abrasive wear behavior of Aluminum modified epoxy and glass fiber composite with 5 wt.% and 10 wt.% of aluminum particles. Through pin on disc wear testing machine, we studied the wear behaviors of composites, and all these samples were fabricated by using hand layup process. Epoxy resin was used as matrix material which was reinforced with Glass fiber and Aluminum as filler. The composite with 5 wt.% and 10 wt.% of Al was cast with dimensions 100 × 100 × 6 mm. The specimens were machined to a size of 6 × 6 × 4 mm for abrasive testing. Abrasive tests were carried out for different grit paper sizes, i.e., 150, 320, 600 at different sliding distance, i.e., 20, 40, 60 m at different loads of 5, 10 and 15 N and at constant speed. The weight loss due to wear was calculated along with coefficient of friction. Hardness was found using Rockwell hardness machine. The SEM morphology of the worn out surface wear was analyzed to understand the wear mechanism. Results showed that the addition of Aluminum particles was beneficial for low abrasive conditions.

Wear Experiment of Alfalfa Lawn Mower Wheel for Soil-Environment Resources Based on Wear Resistance of Materials

2012 ◽  
Vol 600 ◽  
pp. 116-119
Author(s):  
Ke Ping Zhang ◽  
Chun Hua Zhao
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Load Condition ◽  
Wear Testing ◽  
Wear Volume ◽  
Soil Environment ◽  
Lawn Mower ◽  
Peripheral Speed

In order to study the wear between machine wheel and soil-environment resources during alfalfa mowing, the gray iron and loess were chosen as sample materials to research the abrasive wear behavior at different speed and load condition by abrasive wear testing machine. The scanning electron microscopy was used to observe the wear surface morphology. The results showed that, peripheral speed and load had significant effects on wear resistance of materials. When the peripheral speed in 1m/s~2.5m/s and the load in constant, wear quantity decreased gradually with the peripheral speed increased. When the load in 40N~110N and peripheral speed in constant, the wear mass loss increased as the load increased. After that, the wear volume dropped gradually as the load increased. The main wear form is peeled off and micro cutting. The research results would provide references for improving the wear resistance of the wheel

Wear Behavior of Carbon Steels

Tribology ◽  
2006 ◽  
Author(s):  
Ahmed A. Akbar ◽  
Farag M. Shuaeib ◽  
Aimen M. Younis
Keyword(s):  
Working Conditions ◽  
Wear Behavior ◽  
Normal Load ◽  
Testing Machine ◽  
Carbon Steels ◽  
Wear Testing ◽  
Volume Loss ◽  
Wear Coefficient ◽  
Normal Contact ◽  
Rotating Speed

The present work is concerned with study the wear behavior of 1020, 1060, and 1095 steels under different wear conditions, rotating contact speeds (500,850, and 1200 rpm) and normal contact loads (50,100,150 and 200 N) using pin on wheel wear testing machine. The prepared specimens were normalized to make sure that all types of steels are in the same structure. Wear testing results were recorded by measuring weight loss at different contact times (10, 20, 30, 60 and 90 min). The aim of this paper was to study the effect of normal loads and rotating speeds and their interactions on wear behavior of steels under various continuous sliding contact times. The presented relations between the volume loss and working conditions showed that low carbon steel had wear loss higher than other carbon content. In addition, results for all types showed that lower rotating speed had higher effect than other speeds and high normal load had higher effect than other loads. The highest volume loss was observed at high normal load and low rotating speed. And the relation between wear coefficient and working conditions was also observed that wear coefficient decreases as both normal load and rotating speed increase.

The Study on Abrasive Wear of Carbon of High Vanadium High Speed Steel Compared With That of High Chromium Cast Iron

2005 ◽  
Author(s):  
Shizhong Wei ◽  
Jinhua Zhu ◽  
Liujie Xu ◽  
Rui Long
Keyword(s):  
Cast Iron ◽  
Abrasive Wear ◽  
High Speed ◽  
Testing Machine ◽  
High Speed Steel ◽  
Wear Testing ◽  
Wear Property ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

It is studied the carbons abrasive wear property of high vanadium high speed steel compared with that of general high chromium cast iron (Cr20) in this paper. The vanadium content is 10% in the high vanadium high speed steel, and it is a kind of new wear material that has been studied in the past ten years. In the experiment the three materials were used to resist the abrasive wear of Al2O3, the wear test was conducted on a ML-10 abrasive wear-testing machine. The abrasive surfaces, cross-section and sloping -section surfaces were scanned by means of a SEM (JSM-5160LV) device. The typical morphology photos of VC and Cr7C3 were taken in course of abrasive wear, which not only describe the different abrasive wear property of the carbons in the two materials, but also make the cause of the excellent wear property of this HSS clear. The research results have showed that the service lives (V10) are three times longer than that of high chromium cast iron (Cr20). The excellent wear resistance of high vanadium high-speed steel depends on the characters of high hardness, lumpy morphology of VC which are scattered in hard matrix of HSS.

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

MRS Advances ◽  
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.

Sign in / Sign up

Export Citation Format

Share Document