scholarly journals Ultrasonic-assisted drilling of laminated aluminum 2024 metal matrix composite reinforced with SiC nanoparticles: Experimental investigation and grey relational optimization

2021 ◽  
Vol 49 (2) ◽  
pp. 401-413
Author(s):  
Farzad Pashmforoush ◽  
Zinati Farshbaf ◽  
Asghar Dadashzadeh
Keyword(s):  
Ultrasonic Vibration ◽  
Metal Matrix ◽  
Weight Fraction ◽  
Heterogeneous Structure ◽  
Matrix Composites ◽  
Sic Nanoparticles ◽  
Drilling Performance ◽  
Optimization Of Process Parameters ◽  
Circularity Error ◽  
Grey Relational

Aluminum metal matrix composites are widely used in various engineering areas due to their excellent mechanical properties. However, due to their heterogeneous structure, efficient machining of these materials is still a challenging task. Therefore, in the present study the drilling performance of aluminium-copper alloy (Al 2024) reinforced with SiC nanoparticles was experimentally investigated, in the presence of ultrasonic vibration.In this regard, the influence of ultrasonic vibration, SiC weight fraction and drilling parameters was assessed on circularity error and drilling thrust force. Also, the optimization of process parameters was investigated using grey relational analysis. The performed calculations revealed that ultrasonic vibration, SiC content of 2 %wt, feed rate of 20 mm/min and spindle speed of 1400 rpm is the optimal parameters setting in the present study.

An Investigation of Mechanical Properties on Aluminium 6061 Reinforced with Silicon Carbide - Metal Matrix Composites

2015 ◽  
Vol 787 ◽  
pp. 568-572 ◽  
Author(s):  
A. Radha ◽  
K.R. Vijayakumar
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Metal Matrix ◽  
Charpy Impact ◽  
Vortex Method ◽  
Weight Fraction ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Technique ◽  
High Fatigue

Composite materials like Aluminium metal matrix composite is playing a very important role in manufacturing industries e.g. automobile and aerospace industries, due to their superior properties such as light weight, low density, high specific modulus, high fatigue strength etc., In this study Aluminium(Al 6061) is reinforced with Silicon Carbide particles and fabricated by Stir Casting Technique (vortex method). The MMC rectangular bars (samples) are prepared with Al6061 and SiC (28 µ size) as the reinforced particles by weight fraction from 0%, 5%, 10%, and 15% of SiC. The microstructure analysis and Mechanical properties like Tensile Strength, Vickers Hardness and Charpy Impact Strength were investigated on prepared specimens. It is observed that the properties are increased with increasing of reinforced specimens by weight fraction.

Modeling of the machining parameters in turning of Al-5052/TiC/SiC composites: a statistical modeling approach using grey relational analysis (GRA) and response surface methodology (RSM)

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Venkateshwar Reddy Pathapalli ◽  
Meenakshi Reddy Reddigari ◽  
Eswara Kumar Anna ◽  
P. Srinivasa Rao ◽  
D V. Ramana Reddy
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Metal Matrix ◽  
Machining Parameters ◽  
Matrix Composites ◽  
Content Type ◽  
Relational Analysis ◽  
Desirability Approach ◽  
Grey Relational ◽  
Grey Taguchi

PurposeMetal matrix composites (MMC) has been a section which gives an overview of composite materials and owing to those exceptional physical and mechanical properties, particulate-reinforced aluminum MMCs have gained increasing interest in particular engineering applications. Owing to the toughness and abrasive quality of reinforcement components such as silicon carbide (SiC) and titanium carbide (TiC), such materials are categorized as difficult materials for machining. The work aims to develop the model for evaluating the machinability of the materials via the response surface technique by machining three distinct types of hybrid MMCs.Design/methodology/approachThe combined effects of three machining parameters, namely “cutting speed” (s), “feed rate” (f) and “depth of cut” (d), together with three separate composite materials, were evaluated with the help of three performance characteristics, i.e. material removal rate (MRR), cutting force (CF) and surface roughness (SR). Response surface methodology and analysis of variance (ANOVA) both were initially used for analyzing the machining parameters results.FindingsThe contours were developed to observe the combined process parameters along with their correlations. The process variables were concurrently configured using grey relational analysis (GRA) and the composite desirability methodology. Both the GRA and composite desirability approach obtained similar results.Practical implicationsThe results obtained in the present paper will be helpful for decision-makers in manufacturing industries, who work on metal cutting area especially composites, to select the suitable solution by implementing the Grey Taguchi and modeling techniques.Originality/valueThe originality of this research is to identify the suitability of process parameters combination based on the obtained research results. The optimization of machining parameters in turning of hybrid metal matrix composites is carried out with two different methods such as Grey Taguchi and composite desirability approach.

scholarly journals Properties of AlSi9Cu3 metal matrix micro and nano composites produced via stir casting

2018 ◽  
Vol 16 (1) ◽  
pp. 726-731 ◽  
Author(s):  
Tennur Gülşen Ünal ◽  
Ege Anıl Diler
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix ◽  
Weight Fraction ◽  
Stir Casting ◽  
Mechanical Tests ◽  
Matrix Composites ◽  
Casting Method ◽  
Porosity Formation ◽  
Three Point Bending ◽  
Hardness Values

AbstractThe effects of micro and nano sized reinforcement particles on microstructure and mechanical properties of aluminium alloy-based metal matrix composites were investigated in this study. AlSi9Cu3 alloy was reinforced with micro and nano sized ceramic reinforcement particles at different weight fractions by using a stir casting method. The mechanical tests (hardness, three point bending) were performed to determine the mechanical properties of AlSi9Cu3 alloy-based microcomposites (AMMCs) and nanocomposites (AMMNCs). The experimental results have shown that the size and weight fraction of reinforcement particles have a strong influence on the microstructure and the mechanical properties of AlSi9Cu3 alloy-based microcomposites and nanocomposites. The relative densities of all AMMC and AMMNC samples are lower than unreinforced AlSi9Cu3 alloy due to porosity formation with the increase of weight fraction of reinforcement particles. As weight fraction increases, hardness values of AMMCs and AMMNCs increase. Maximum flexural strength can be obtained at 3.5wt.% for the AMMC sample with microsized Al2O3 particles and at 2wt.% for the AMMNC sample with nano-sized Al2O3 particles. After the weight fractions exceed these values, flexural strengths of both AMMCs and AMMNCs decrease due to clustering of Al2O3 particles.

A Study on Machinability Performance of Silicon Carbide Paticulate Reinforced Metal Matrix Composite

2015 ◽  
Vol 766-767 ◽  
pp. 229-233
Author(s):  
R. Ganesh ◽  
R. Satyaprakash ◽  
M. Prakash ◽  
Chandrasekaran Kesavan
Keyword(s):  
Heat Treatment ◽  
Surface Roughness ◽  
Performance Indicators ◽  
Metal Matrix ◽  
Sintering Temperature ◽  
Weight Fraction ◽  
Machining Performance ◽  
Drilling Performance ◽  
Powder Metallurgy Route ◽  
Precipitation Heat

This paper aims to understand the influence of sintering temperature on the drilling performance of Al 2219 – SiCp composite. This type of composite is currently used in aerospace and transportation industries. Drilling is the most frequently employed operation of secondary machining owing to the need for fabrication. This composite is usually subjected to precipitation heat treatment and needs the study of influence of sintering temperature on machining performance. The composite is fabricated through powder metallurgy route. The drilling tests are conducted with PCD drill of 5 mm diameter and 118° point angle. The experiments are conducted under conditions of different spindle speeds of 500, 1000 and 1500 rpm and feed rates of 10, 15 and 20 mm/min. Specific cutting pressure and surface roughness of the hole are considered as performance indicators during the study. Weight fraction of the reinforcement and sintering temperature are found to have significant influence on the drilling performance of the composites.

Influence of ultrasonic cavitation on microstructure and mechanical response of an aluminum/alumina nanocomposite

2016 ◽  
Vol 23 (5) ◽  
pp. 481-487 ◽  
Author(s):  
Pragyan Mohanty ◽  
Dilip Kumar Mishra ◽  
Shikha Varma ◽  
Kampal Mishra ◽  
Payodhar Padhi
Keyword(s):  
Photoelectron Spectroscopy ◽  
Metal Matrix ◽  
Mechanical Response ◽  
Weight Fraction ◽  
Transmission Electron Micrograph ◽  
Matrix Composites ◽  
Metal Matrix Nanocomposites ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Average Size

AbstractNanocomposites of Al and Al2O3 were synthesized by an ultrasonic full cavitation technique which is a novel route for synthesis of uniformly distributed nanoparticles in metal matrix composites. The transmission electron micrograph indicates the uniform arrangement of nanoparticles throughout the metal matrix and the average size of the nanoparticles are in the order of 5 nm. The selected area electron diffraction analysis shows the presence of both Al and Al2O3 phases, which is also evidenced from the X-ray photoelectron spectroscopy analysis. The significant improvement in hardness and Young’s modulus due to the addition of a low weight fraction of nano-sized Al2O3 in aluminium infers that alumina nanoparticulates are distributed uniformly throughout the aluminium metal matrix. Hence, this paper shows a new method for inexpensive fabrication of bulk light weight metal matrix nanocomposites (MMNCs) by the use of noncontact full cavitation method.

Corrosion Resistance of SiCp/Al Metal Matrix Nanocomposites

2013 ◽  
Vol 773 ◽  
pp. 468-471 ◽  
Author(s):  
Chun Lin He ◽  
Ying Ying Bai ◽  
De Yuan Lou ◽  
Guo Feng Ma ◽  
Jan Ming Wang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Electrochemical Impedance ◽  
Galvanic Corrosion ◽  
Matrix Composites ◽  
Matrix Metal ◽  
Sic Nanoparticles ◽  
Metal Matrix Nanocomposites ◽  
Nanoparticle Agglomeration

The effect of volume fraction of SiC nanoparticles on the corrosion resistance of the SiCp/Al metal matrix composites (MMCs) in 3.5 wt.% NaCl aqueous solution were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The results show that pitting susceptibility is about the same for the nanocomposites and the correspondingly unreinforced matrix metal Al, and the corrosion potentials of the MMCs are about 50 mV-60 mV more positive than that of the unreinforced Al, and is independent of the volume fraction of SiC nanoparticles. The corrosion resistance for the nanocomposite slightly decreases when the volume fraction increases due to both SiC nanoparticle agglomeration and promoting galvanic corrosion between SiC and Al.

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