On Microstructure and Wear Behavior of Microwave Processed Composite Clad

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
Sarbjeet Kaushal ◽  
Dheeraj Gupta ◽  
Hiralal Bhowmick
Keyword(s):  
Wear Behavior ◽  
Wear Test ◽  
Dry Sliding Wear ◽  
X Ray ◽  
Microwave Exposure ◽  
Interfacial Cracks ◽  
The Matrix ◽  
Xrd Patterns ◽  
Vicker’S Microhardness ◽  
Ss 304

In the present study, wear resistance composite cladding of Ni-based + 20% WC8Co (wt. %) was developed on SS-304 substrate using domestic microwave oven at 2.45 GHz and 900 W. The clad was developed within 300 s of microwave exposure using microwave hybrid heating (MHH) technique. The clad was characterized through scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Vicker’s microhardness, and dry sliding wear test. Microstructure study revealed that the clad of approximately 1.25 mm thickness was developed by partial mutual diffusion with substrate. It was observed that the developed clad was free from visible interfacial cracks with significantly less porosity (∼1.2%). XRD patterns of the clad confirmed the presence of Cr23C6, NiSi, and NiCr phases that eventually contributed to the enhancement in clad microhardness. Vicker’s microhardness of the processed clad surface was found to be 840 ± 20 HV, which was four times that of SS-304 substrate. In case of clad surface, wear mainly occurs due to debonding of carbide particles from the matrix, while plastic deformation and strong abrasion are responsible for the removal of material from SS-304 substrate.

Microstructure and Wear Properties of In Situ TiC-Cr7C3/Fe Surface Composite

2011 ◽  
Vol 415-417 ◽  
pp. 170-173
Author(s):  
Jing Wang ◽  
Si Jing Fu ◽  
Yi Chao Ding ◽  
Yi San Wang
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Test Machine ◽  
Wear Properties ◽  
Surface Composite ◽  
The Matrix

A wear resistant TiC-Cr7C3/Fe surface composite was produced by cast technique and in-situ synthesis technique. The microstructure and dry-sliding wear behavior of the surface composite was investigated using scanning electron microscope(SEM), X-ray diffraction(XRD) and MM-200 wear test machine. The results show that the surface composite consists of TiC and Cr7C3as the reinforcing phase, α-Fe and γ-Fe as the matrix. The surface composite has excellent wear-resistance under dry-sliding wear test condition with heavy loads.

Influence of Precipitation Hardening on the Sliding Wear Behavior of a Cu-Zn-Al-Mn-Si Based Brass Alloy

2017 ◽  
Vol 898 ◽  
pp. 355-360
Author(s):  
Hang Li ◽  
Shi Chao Liu ◽  
Jin Chuan Jie ◽  
Ting Ju Li
Keyword(s):  
Wear Resistance ◽  
Sliding Wear ◽  
Precipitation Hardening ◽  
Wear Behavior ◽  
Wear Test ◽  
High Wear Resistance ◽  
Dry Sliding Wear ◽  
Wear Loss ◽  
Brass Alloy ◽  
The Matrix

Special brasses containing Mn and Si possess high wear resistance due to the dispersion of hard Mn5Si3 particles. The effect of precipitation hardening on the wear resistance of a Cu–30Zn–3Al–3Mn–0.7Si based brass alloy was investigated. Dry sliding wear test was conducted using a block-on-ring configuration. The results indicated that finely, nanoscale Mn5Si3 particles precipitated from the matrix after annealing at 800 °C for 4 h, resulting in the increase of hardness from 240 to 278 HV. Both the wear loss and friction coefficient decreased, indicating the improvement of the wear resistance. From the examination of the worn surfaces, adhesive and abrasive wear were found to be the major wear forms. The adhesion and abrasion decreased after the precipitation-hardening treatment.

Investigation of Dry Sliding Wear Behavior of Ni–SiC Microwave Cladding

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Sarbjeet Kaushal ◽  
Dheeraj Gupta ◽  
Hiralal Bhowmick
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
X Ray Diffraction ◽  
Sliding Method ◽  
The Matrix ◽  
Microwave Cladding ◽  
En 31 ◽  
Pin On Disk ◽  
Vicker’S Microhardness

In the present work, a wear-resistant composite cladding of Ni-based+10% SiC was developed on martensitic stainless steel (SS-420) through a recently developed process microwave hybrid heating (MHH) technique. In the current investigation, domestic microwave oven of frequency 2.45 GHz and 900 W power was used for the development of clads. The metallurgical and mechanical characterizations of developed clads were carried through scanning electron microscope (SEM), X-ray diffraction (XRD), and Vicker's microhardness. The developed clad is uniformly developed and it is metallurgically bonded with the substrate. The average Vicker's microhardness of the clad was 652 ± 90 HV. The tribological behavior of cladding has been investigated through pin-on-disk sliding method against an EN-31 (HRC-62). The clad surface showed good resistance to the sliding wear. It is observed that in case of the clad samples, wear occurs due to dislocation of particles, smearing off of tribofilm, and craters due to pullout of carbides from the matrix.

Microstructure and wear resistance of Cuss-toughened Cr5Si3/CrSi metal silicide alloys

2005 ◽  
Vol 20 (5) ◽  
pp. 1122-1130 ◽  
Author(s):  
Y.X. Yin ◽  
H.M. Wang
Keyword(s):  
Solid Solution ◽  
Wear Resistance ◽  
Sliding Wear ◽  
Room Temperature ◽  
Wear Test ◽  
Melting Process ◽  
Dry Sliding Wear ◽  
Metal Silicide ◽  
X Ray Diffraction ◽  
X Ray

Wear-resistant Cu-based solid-solution-toughened Cr5Si3/CrSi metal silicide alloy with a microstructure consisting of predominantly the dual-phase primary dendrites with a Cr5Si3 core encapsulated by CrSi phase and a small amount of interdendritic Cu-based solid solution (Cuss) was designed and fabricated by the laser melting process using Cr–Si–Cu elemental powder blends as the precursor materials. The microstructure of the Cuss-toughened Cr5Si3/CrSi metal silicide alloy was characterized by optical microscopy, powder x-ray diffraction, and energy dispersive spectroscopy. The Cuss-toughened silicide alloys have excellent wear resistance and low coefficient of friction under room temperature dry sliding wear test conditions with hardened 0.45% C carbon steel as the sliding–mating counterpart.

Dry Sliding Wear Behavior of Hot Pressed Fe-28Al and Fe-28Al-10Ti Alloys

2011 ◽  
Vol 306-307 ◽  
pp. 425-428
Author(s):  
Jing Li ◽  
Xiao Hong Fan ◽  
De Ming Sun
Keyword(s):  
Plastic Deformation ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Long Distance ◽  
Wear Performance ◽  
Testing Conditions ◽  
Worn Surface

Fe-28Al and Fe-28Al-10Ti alloys were prepared by mechanical alloying and hot pressing. The phases and dry sliding wear behavior were studied. The results show that Fe-28Al bulk materials are mainly characterized by the low ordered B2 Fe3Al structure with some dispersed Al2O3 particles. Fe-28Al-10Ti exhibits more excellent wear resistance than Fe-28Al, especially after long distance sliding wear test. There are obvious differences in wear mechanisms of Fe-28Al and Fe-28Al-10Ti alloys under different testing conditions. Under the load of 100N, there is plastic deformation on the worn surface of Fe-28Al. The main wear performance of Fe-28Al-10Ti is particle abrasion, the characteristics of which are micro cutting and micro furrows, but micro-crack and layer splitting begin to form on the surface of Fe-28Al. Under the load of 200N, serious plastic deformation and work-hardening lead to rapid crack propagation and eventually the fatigue fracture of Fe-28Al. Plastic deformation is the main wear mechanism of Fe-28Al-10Ti under the load of 200N, which are characterized by micro-crack and small splitting from the worn surface.

Analysis of susceptor temperature during microwave heating and characterization of Ni-30Cr3C2 clads

2020 ◽  
Vol 234 (6) ◽  
pp. 881-894 ◽  
Author(s):  
Sandeep Bansal ◽  
Dheeraj Gupta ◽  
Vivek Jain
Keyword(s):  
Bending Test ◽  
X Ray Diffraction ◽  
Microstructural Investigation ◽  
X Ray ◽  
Soft Matrix ◽  
Microwave Exposure ◽  
Carbide Phases ◽  
Hydropower Plants ◽  
Cavitation Erosion Resistance ◽  
Vicker’S Microhardness

Hydropower plants are experiencing huge revenue losses due to the failure of hydro turbines caused by cavitation. Surface modification could be a feasible solution to tackle this problem. Microwave processing of metallic materials to coat/clad has gained popularity in recent years. In the current study, microwave exposure time by analyzing susceptor temperature is optimized to get sound clads. Nickel-based and Cr3C2-reinforced clad on SS-316 substrate is developed for cavitation erosion resistance. The clads have been developed in a domestic microwave oven of 2.45 GHz and 900 W. The Ni + 30% Cr3C2 developed clad has been characterized through various standard mechanical and metallurgical techniques like X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, Vicker’s micro-hardness, porosity measurement, and flexural study. The presence of various carbide and intermetallic phases Cr2Ni3, Cr7C3, CrSi, SiO2, and FeNi3 is confirmed from the X-ray diffraction pattern. The distribution of hard carbide phases into soft matrix is confirmed from the microstructural investigation. Vicker’s microhardness study confirms the enhanced average microhardness of the clad region by 2.5 times of the substrate. The analysis of porosity shows significantly less (0.98%) porosity. The flexural study of developed clads by using three-point bending test is evaluated and flexural strength and deformation index values of developed clads of 814 ± 11.5 MPa and 2.29 × 10−4 mm N−1 respectively are observed.

Mechanical and Wear Behavior of Al7075 - Graphite Self-Lubricating Composite Reinforced by Nano-WO3 Particles

2020 ◽  
Vol 1002 ◽  
pp. 151-160 ◽  
Author(s):  
Anmar D. Mahdi ◽  
Saif S. Irhayyim ◽  
Salah F. Abduljabbar
Keyword(s):  
Compressive Strength ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Wear Behavior ◽  
Microstructural Analysis ◽  
Wear Test ◽  
High Strength ◽  
Hybrid Nanocomposites ◽  
Dry Sliding Wear ◽  
Alloy Matrix

Al7075 hybrid nanocomposites considered one of the most material utilized in modern engineering applications that required a combination of superior properties such as lightweight, high strength, excellent corrosion resistance, and high thermal conductivity. In the current study, Al7075 – 5 vol % graphite self-lubricating composite was reinforced by 0, 1.5, 2.5, 3.5, and 4.5 vol % WO3 nanoparticles in order to study the microstructural, mechanical, and wear characteristics. The classical powder metallurgy route was employed to fabricate the hybrid nanocomposites specimens. The microstructural analysis of the nanocomposites was characterized by utilizing a Field Emission Scanning Electron Microscope (FESEM) and Energy-Dispersive X-ray (EDX) analyses. Mechanical properties such as micro-hardness and diametral compressive strength were studied. Dry sliding wear test was performed under the various loads of 10, 15, 20, and 25 N at a sliding distance and sliding speed of 1810 m and 1.5 m/s, respectively. Results have revealed that the microhardness and diametral compressive strength considerably improved by increasing the WO3 content until 3.5 vol % and then slightly decreased. Besides, both the values of the wear rate and friction coefficient gradually reduced by increment the reinforcement content up to 3.5 vol % and then suddenly increases for all the applied loads. Nevertheless, the wear rate and friction coefficient were correlated positively with the applied loads. From the results obtained, graphite as solid lubricating material with WO3 nanoparticles was successfully combined into the Al7075 alloy matrix. The optimum mechanical and wear performance of the hybrid nanocomposite were revealed at 3.5 vol % content of WO3 nanoparticles.

Influence of reinforcing fiber on the dry sliding wear behavior of hybrid fabric/benzoxazine composites

2019 ◽  
Vol 89 (23-24) ◽  
pp. 5153-5164
Author(s):  
Meng Su ◽  
Lei Liang ◽  
Fang Ren ◽  
Weigang Yao ◽  
Mingming Yu ◽  
...  
Keyword(s):  
High Temperatures ◽  
Tribological Properties ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Mechanical Analysis ◽  
Dry Sliding Wear ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Wear Tests

Hybrid polyimide (PI)-polytetrafluoroethylene (PTFE)/Nomex fabric composites and Nomex-PTFE/Nomex fabric composites were prepared with benzoxazine (BOZ) as the resin binder. The tribological properties and wear mechanisms of the two composites at different temperatures were investigated using a ball-on-disk wear tester. Before sliding wear tests, a thermo-aging test, thermogravimetric analysis and dynamic mechanical analysis of PI and Nomex fibers were performed to evaluate the thermal properties of the two reinforcing fibers. After each wear test, scanning electron microscopy was employed to analyze the morphologies of the worn surfaces of the composite. The results of sliding wear tests show that the difference between the tribological properties of the two composites is small at room temperature. However, the hybrid PI-PTFE/Nomex fabric composite achieves better tribological properties at high temperatures compared with the hybrid Nomex-PTFE/Nomex fabric composite, which suffered wear failure at 240℃. It is proposed that the excellent thermal mechanical property and thermal stability of PI fibers is the main factor that endows the PI-PTFE/Nomex/BOZ composite with a more favorable tribological property at high temperatures. Moreover, the influence of the increasing temperature on the tribological properties of the two composites was also investigated.

scholarly journals Differences in Dry Sliding Wear Behavior between Al–12Si–CuNiMg Alloy and Its Composite Reinforced with Al2O3 Fibers

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1749 ◽  
Author(s):  
Qing Zhang ◽  
Jie Gu ◽  
Shuo Wei ◽  
Ming Qi
Keyword(s):  
Sliding Wear ◽  
Volume Fraction ◽  
Wear Behavior ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
The Matrix ◽  
Pin On Disk

The dry sliding wear behavior of the Al-12Si-CuNiMg matrix alloy and its composite reinforced with Al2O3 fibers was investigated using a pin-on-disk wear-testing machine. The volume fraction of Al2O3 fibers in the composite was 17 vol.%. Wear tests are conducted under normal loads of 2.5, 5.0, and 7.5 N, and sliding velocities of 0.25, 0.50, and 1.0 m/s. Furthermore, the worn surfaces of the matrix alloy and the composite were examined using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results showed that the wear resistance of the composite was inferior to that of the matrix alloy, which could be attributed to the high content of reinforcement and casting porosities in the composite. Worn-surface analysis indicates that the dominant wear mechanisms of both materials were abrasive wear and adhesive wear under the present testing conditions.

scholarly journals Effect of Necklace-Type Distribution of SiC Particles on Dry Sliding Wear Behavior of As-Cast AZ91D/SiCp Composites

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 296 ◽  
Author(s):  
Chao Sun ◽  
Nannan Lu ◽  
Huan Liu ◽  
Xiaojun Wang ◽  
Xiaoshi Hu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Interface Bonding ◽  
Type Distribution ◽  
Wear Rates ◽  
Sic Particles ◽  
The Matrix

In this study, the dry sliding wear behaviors of SiC particle reinforced AZ91D matrix composites fabricated by stirring casting method were systematically investigated. The SiC particles in as-cast composites exhibited typical necklace-type distribution, which caused the weak interface bonding between SiC particles and matrix in particle-segregated zones. During dry sliding at higher applied loads, SiC particles were easy to debond from the matrix, which accelerated the wear rates of the composites. While at the lower load of 10 N, the presence of SiC particles improved the wear resistance. Moreover, the necklace-type distribution became more evident with the decrease of particle sizes and the increase of SiC volume fractions. Larger particles had better interface bonding with the matrix, which could delay the transition of wear mechanism from oxidation to delamination. Therefore, composites reinforced by larger SiC particles exhibited higher wear resistance. Similarly, owing to more weak interfaces in the composites with high content of SiC particles, more severe delamination occurred and the wear resistance of the composites was impaired.

Sign in / Sign up

Export Citation Format

Share Document