Novel study on investigating the mechanical, microstructure morphological, and dry sliding wear characteristics of grey cast iron GG25 with copper additions for valve guides in internal combustion engine DOI Creative Commons
Baljeet Singh,

Jasmaninder Singh Grewal,

Rajeev Kumar

et al.

Frontiers in Materials, Journal Year: 2024, Volume and Issue: 10

Published: Jan. 8, 2024

Introduction: The performance functionality efficacy of the engine’s valve train assembly is considerably affected by guide. Material selection impacted prolonged operational lifespan engines, which favours casting and machining materials such as cast iron. intent this study to examine dry sliding characteristics GG25 iron with copper additives. Discovering ways in variations load velocity impact wear paramount significance. Methods: research entailed examination across various environmental conditions. Loads were varied at 30 N, 40 50 N while maintaining a 1 m/s constant. In same manner, velocities 0.5 m/s, 2 constant was maintained. Experimental techniques carried out ambient temperature. Throughout investigations, frictional forces coefficient friction also determined. mechanisms samples that had become deteriorated or worn-out examined employing scanning electron microscope when combined EDX analysis. Results: A rise normal from led twofold losses, measuring 417 microns compared 222 previously. range losses observed moderate speeds (0.5 m/s–1 m/s) 133–222 microns. Conversely, maximum loss 1,226 elevated contrast 617 higher loads N. Additionally, discovered more pronounced both loading speed are moderate, whereas becomes substantial raised, culminating losses. Discussions: summary, highlights considerable effect have on prevalence conditions velocity, influence significant. However, accelerates, it predominant factor. An analysis well indicated under N–50 raised 0.238 0.43. mechanisms, discerned via microscopy analysis, underscored increased comparison loading.

Language: Английский

SiC and MWCNT Blending Actions on Functional Performance of Hybrid AA2024 Alloy Nanocomposite Via Two Step Stir Cast Route DOI

M. Aruna,

S. Kaliappan, D. V. V. S. B. Reddy Saragada

et al.

International Journal of Metalcasting, Journal Year: 2024, Volume and Issue: unknown

Published: May 7, 2024

Language: Английский

Citations

33
Multi-objective optimization of laser polishing parameters for enhanced mechanical properties, sustainability, and surface finish of 3D-Printed industrial ABS polymers using response surface methodology (RSM) DOI Creative Commons
Ray Tahir Mushtaq,

Yanen Wang,

Chengwei Bao

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 29, P. 3168 - 3184

Published: Feb. 7, 2024

In this investigation, the asperities on print surface have been reduced using a laser polishing technique. The improvement in mechanical properties (tensile and flexural strength), roughness of printed surface, scan time three-dimensional (3D)-printed new acrylonitrile-butadiene-styrene (ABS) polymers are among industrial issues that projected process is explicitly intended to address. Response approach was used series tests determine how altering laser's parameters influenced test materials' top finish properties. pre-polishing workpiece compared terms characteristics examination scanning electron microscope. According results, decreased by more than 18.85% for ABS utilizing polishing, from 8.01 6.50 μm. sample's tensile strength improved 8.1%, 35.8 38.7 MPa. samples' 0.143 min increased 2.58% 58.01 59.51 These results demonstrate 3D-printed polymer material's qualities enhanced novel post-processing order produce sustainable items, innovative technique quite helpful 3D printing sector.

Language: Английский

Citations

28
Maximizing performance and efficiency in 3D printing of polylactic acid biomaterials: Unveiling of microstructural morphology, and implications of process parameters and modeling of the mechanical strength, surface roughness, print time, and print energy for fused filament fabricated (FFF) bioparts DOI
Ray Tahir Mushtaq,

Yanen Wang,

Chengwei Bao

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 259, P. 129201 - 129201

Published: Jan. 6, 2024

Language: Английский

Citations

24
Optimization of surface roughness in milling of EN 24 steel with WC-Coated inserts using response surface methodology: analysis using surface integrity microstructural characterizations DOI Creative Commons
Shashwath Patil,

Thanikodi Sathish,

P. Sudhakar Rao

et al.

Frontiers in Materials, Journal Year: 2024, Volume and Issue: 11

Published: March 7, 2024

Introduction: Among alloys of medium-carbon and high-strength steel, EN 24 steel is characterised by its nickel-chromium-molybdenum composition. highly suitable for application in heavy-duty projects due to notable resilience damage, especially when exposed low temperatures. With the objective minimising surface irregularities, this research endeavours enhance milling process employing coated tungsten carbide (WC) tool inserts. Methods: Feed rate, cutting speed, depth cut, fluid are all crucial factors experimental investigation. Four distinct levels applied each factor. The utilises Design Experiments (DOE)-based Central Composite Response Surface Methodology. To predict output parameters, mathematical models developed utilising analysis variance (ANOVA) optimisation purposes. Results discussions: Through utilisation multi-objective optimisation, optimal combination inserts was determined, which provided irregularities 0.301 µm. Cutting speed (CS) 149.507 m/min, feed rate (FR) 340.27 mm/min, cut (DOC) 0.599 mm, (CF) 12.50 L/min parameters. morphologies machined workpiece at particular parameter values can be discerned through scanning electron microscope (SEM) analysis, yielding significant insights. parameters that have been identified provide practical recommendations improving method utilised. Understanding entirety facilitated SEM microstructures under conditions. morphology evaluated using profilometry, provides additional insight into integrity. discourse investigates potential applications implications results, as well suggests directions further study concerning enhancement processes similar alloys.

Language: Английский

Citations

20
Additive manufacturing of metal matrix composites DOI Creative Commons
Mohan Sai Kiran Kumar Yadav Nartu, Priyanshi Agrawal

Materials & Design, Journal Year: 2025, Volume and Issue: unknown, P. 113609 - 113609

Published: Jan. 1, 2025

Language: Английский

Citations

3
Impact of solid–liquid interfacial layer in the nanofluid flow between stretching stationary disk and a rotating cone DOI

J. Madhu,

K. Vinutha,

R. Naveen Kumar

et al.

Tribology International, Journal Year: 2023, Volume and Issue: 192, P. 109187 - 109187

Published: Dec. 12, 2023

Language: Английский

Citations

43
Homogeneity, metallurgical, mechanical, wear, and corrosion behavior of Ni and B4C coatings deposited on 304 stainless steels developed by microwave cladding technique DOI Creative Commons
Shashi Prakash Dwivedi, Shubham Sharma, Arun Pratap Srivastava

et al.

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 27, P. 5854 - 5867

Published: Nov. 1, 2023

The microwave cladding technique for depositing Ni and 10 % B4C coatings on 304 stainless steel has yielded significant advancements in material properties performance. key findings of this study revealed remarkable improvements, including a 43.33% increase hardness, indicating enhanced wear resistance mechanical properties. This improvement was attributed to the uniform distribution surface, ensuring consistent interfacial layer developed between SS surface without cracks porosity. Microstructural analysis at 500× magnification unveiled an impressive 2233.35 grains per square inch, showcasing refined grain structure achieved during process. Wear testing demonstrated low rate 0.00308 mm³/m favorable coefficient friction 0.1981, confirming material's suitability applications with demanding frictional conditions. Furthermore, corrosion behavior coated assessed, revealing minimal weight loss only 0.42 mg 10% sample. presence various carbide phases, such as Cr2C, Cr23C6, Cr7BC4, Fe5C2, Fe23B6, within further contributed

Language: Английский

Citations

30
An analysis of microstructural morphology, surface topography, surface integrity, recast layer, and machining performance of graphene nanosheets on Inconel 718 superalloy: Investigating the impact on EDM characteristics, surface characterizations, and optimization DOI Creative Commons
Kamlesh Paswan, Shubham Sharma,

Shashi Prakash Dwivedi

et al.

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 27, P. 7138 - 7158

Published: Nov. 1, 2023

Inconel 718 finds extensive applications in the aviation and aerospace industries, particularly manufacturing of jet engines high-speed airframe components like fasteners, bolts, buckets, instrumentation parts, wheels, spacers. It is also utilised production cryogenic tankage gas turbine blades. The present study focuses on investigating machining performance graphene nanosheets 718. Various aspects 718's machinability through electrical discharge (EDM) have been examined, including material removal rate (MRR), surface roughness, morphology, tool rear Rate (TWR), residual stresses machined surface, Vickers hardness, recast layer thickness. investigation reveals a significant impact process parameters these characteristics. effects observed using several analytical instruments such as field emission scanning electron microscopy (FE-SEM), transmission (TEM), particle size analyzer, X-ray diffraction (XRD). Furthermore, optimization response data with respect to input has performed this study. TEM analysis used determine individual debris particles deionised water mixed nanosheet dielectric mediums. To verify that are same parent material, energy dispersive spectroscopy (EDX) used. compounds crystal structures base metal surfaces, XRD A high-resolution diffractometer (HRXRD) measure surface. EDX composition testing analyze modification. Due rapid heating quenching takes place medium, becomes harder. Deposited materials, microholes, textures can all be FESEM microstructure observation. Comparing conventional EDM dielectric, thickness reduced. recapitulate, explores how various mediums affect processes. examines size, compound formation, stresses, modification, microstructure, addition medium produces promising results, reducing improving quality. results offer suggestions for properties effectiveness.

Language: Английский

Citations

29
Unveiling of grain structure, porosity, phase distributions, microstructural morphology, surface hardness, and tribo-corrosion characteristics of nickel, and titanium dioxide-based SS-304 steel microwave composite coatings cladding DOI Creative Commons
Shubham Sharma, Shashi Prakash Dwivedi, Changhe Li

et al.

Journal of Materials Research and Technology, Journal Year: 2023, Volume and Issue: 28, P. 4299 - 4316

Published: Dec. 30, 2023

The microstructure, homogeneity, and tribo-corrosion behavior of microwave-developed Nickel as well titanium dioxide SS-304 cladding surfaces are the primary emphasis this research. study includes assessing hardness enhancement from Ni TiO2 particles in surface. investigation additionally evaluates surface wear rates, friction coefficients, resistance to corrosion under tribological conditions. with developed by microwave energy were investigated study. microstructure was being examined validate uniformly homogeneous dispersion particles, XRD employed determine phases. evaluated, a pin-on-disk tribometer has assessed behavior. Tribo-corrosion tested 3.5-percent NaCl solution. To enhance cladding's efficiency, hybrid heating (MHH) utilising charcoal susceptor been employed. Findings exhibited that analysis showed had uniform distribution compact microstructure. significantly improved about 37.68% due incorporation 10% particles. FeNi3, NiSi2, Ni3C, NiC, Ni2Si, FeNi, phases seen on conditions also evaluated using tribometer. outcomes have decreased rates coefficients compared uncoated substrate. Moreover, 3.5% rate coefficient measured be 0.00412 mm3/m 0.297, respectively. results indicated enhanced

Language: Английский

Citations

24
Enhancing tribo-mechanical, microstructural morphology, and corrosion performance of AZ91D-magnesium composites through the synergistic reinforcements of silicon nitride and waste glass powder DOI Creative Commons
Shubham Sharma, Shashi Prakash Dwivedi, Abhinav Kumar

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 8, 2024

Abstract The present investigation has employed recycled waste glass powder (WGP) and silicon nitride (Si 3 N 4 ) as reinforcing-agents within AZ91D-matrix composites. composites were fabricated by employing the vacuum stir casting technique to mitigate effects of oxidation ensure homogeneity, uniformity, superior wettability among reinforcements. A microscopic study provided confirmation a uniform dispersion WGP Si particles throughout AZ91D-matrix. tensile strength AZ91D/WGP/Si rise with inclusion particulates up 1.5 percent in AZ91D/7.5% . However, AZ91D/9%Si composite have showed maximum value compared other chosen formulations/combinations current investigation. AZ91D/1.5% WGP/7.5% strengthened 12.13 comparison base alloy In A1 formulated composite, amount particulate enhanced hardness AZ91D-alloy percent. Findings, nevertheless exhibited that A6 had outcomes terms hardness. incorporation “reinforcing-constituent particulates” 1.5%WGP + 7.5%Si combination AZ91D-matrix, further increased fatigue-strength around 57.84 weight-loss 0.312 mg was being unveiled for composite. however, reported be 0.294 mg. At 5 loads, 2 m/s sliding speed, 1000 m distance, developed 1.5%WGP/7.5%Si /AZ91D rate wear, frictional coefficient 0.0025 mm /m 0.315, respectively. scanning electron microscopy (SEM) identified presence corrosion pits on surfaces undergone corrosion. These found result localised surface assaults occurring corrosive environments. Additionally, SEM pictures worn indicated emergence microcracks, which may associated conditions cyclic loading. Moreover, tensile-fractography examination brittle fracture failure, including cracks debonding phenomena. addition, EDS spectra-analysis revealed an apparent existence observed Mg-peak, Si-peak, Al-peak, Ca-peak, O-peak Furthermore, utilisation X-ray diffraction analysis effectively determined hard phases inside significantly contributed enhancement wear resistance. development harder-phases included, α-Mg, Al 12 Mg 17, SiO , MgO, CaO been accountable tribomechanical, wear-resistance characteristics discovered substantial impact enhancing mechanical performance raising resistance wear.

Language: Английский

Citations

14