scholarly journals Effect of Uncarbonized Eggshell Weight Percentage on Mechanical Properties of Composite Material Developed by Electromagnetic Stir Casting Technique

2019 ◽  
Vol 29 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Shashi Dwivedi ◽  
Nagendra Maurya ◽  
Manish Maurya
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Stir Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
Electromagnetic Stir Casting

Effect of Heat Treatment on Microstructure and Tensile Properties of A356/V2O5 Insitu Composites

2016 ◽  
Vol 6 (3) ◽  
pp. 1-10 ◽  
Author(s):  
Amneesh Singla ◽  
Rajnish Garg ◽  
Mukesh Saxena
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Base Alloy ◽  
Stir Casting ◽  
Optical Microscope ◽  
Age Hardening ◽  
Weight Percentage ◽  
Casting Technique ◽  
Microstructure And Mechanical Properties ◽  
Oxide Particles

A 356 alloy reinforced with insitu V2O5 particles by using stir casting technique. The composites were produced by the addition of oxide particles in different weight percentage. The effect of oxide powder addition on microstructure and mechanical properties of produced composites were investigated. The effect of heat treatment on microstructure and mechanical properties were investigated by optical microscope, Microhardness tester and tension test. A significant improvement in hardness and tensile strength was revealed in the produced composite as compared to the base alloy. With the addition of oxide particles, the shape and size of eutectic Si changed which in turn affects the properties. It was observed that 2h solutionizing followed by the artificial aging was sufficient to make the structure homogenize and to produce the hardening precipitates. The improvement in the mechanical properties has been observed due to the age hardening precipitates in addition with refinement of insitu V2O5 particles.

Influence of Sic and Al2O3 Particulate Reinforcement on the Mechanical Properties of ZA27 Metal Matrix Composites

2019 ◽  
Vol 969 ◽  
pp. 122-127
Author(s):  
B.N. Anjan ◽  
G.V. Preetham Kumar
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Matrix Composites ◽  
Reinforced Composites ◽  
Weight Percentage ◽  
Casting Technique ◽  
Fine Microstructure ◽  
Properties Of Composites

Zinc aluminum based matrix composites reinforced with SiC and Al2O3 particles have significant applications in the automobile field. Stir casting method followed by squeeze process was used for fabrication. ZA27 composites reinforced with SiC and Al2O3 particles (20-50µm) in various weight percentage (wt%) ranges from 0-10 in a step of 5 each was fabricated. OM, SEM and EDS analysis of microstructures obtained for matrix alloy and reinforced composites were performed in order to know the effect of varying wt% on physical and mechanical properties of composites. Squeeze casting technique shows better features such as fine microstructure as a result of low porosity and good bonding between matrix and reinforcement. Addition of reinforcements decreased the densities of matrix alloy. SiC reinforced composites showed better results as compared with Al2O3 reinforced ones. Hardness and ultimate tensile strength value of 10 wt% reinforced composites showed improved results.

Effect of Aging Treatment on Microstructure and Mechanical Properties of Al-Si Matrix Alloy Reinforced with High Purity Aluminum Nitride (AlN)

2011 ◽  
Vol 462-463 ◽  
pp. 967-971
Author(s):  
Mahamad Noor Wahab ◽  
Mariyam Jameelah Ghazali ◽  
Abdul Razak Daud
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Nitride ◽  
High Purity ◽  
Aging Treatment ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
Microstructure And Mechanical Properties

Microstructure and mechanical properties of heat treated Al-Si alloy containing up to 10 wt% aluminum nitride (AlN) particles were investigate. In this work high purity AlN powder with different weight percentage of 0, 5, 7 and 10 were calculated as reinforced material to the metal matrix composites. The Al-Si matrix was prepared by a bottom pour stir casting technique. Heat treatment was performed by soaking and followed by an aged treatment. It was found that the AlN particles were scattered randomly distributed in the matrix composite. Ageing induced Si grain transformation into to spheroid shapes while Al dendrites tend to become finer. Ultimate tensile strength (UTS) had improved drastically from to 125MPa to 306MPa for un-aged Al-Si alloy and aged AlN 7 wt%. Fracture morphologies showed a pronounced feature with small dimples, tear ridges and micro neck particularly in the aged samples leading to a higher tensile value and increase in ductility. The presence of AlN particles in the alloys had improved the tensile strength by slowing down the plastic deformation during tensile test.

Role of Nano-Sized Graphene Amine Reinforcements on Mechanical Properties of AA7076 Based MMCs

2020 ◽  
Vol 12 ◽  
Author(s):  
Nagaraj R. Banapurmath ◽  
Adarsh Patil ◽  
Anand M. Hunashyal ◽  
Vinodkumar V. Meti ◽  
Arun Y. Patil ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Structural Engineering ◽  
Matrix Material ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Stir Casting ◽  
Homogeneous Distribution ◽  
Weight Percentage ◽  
Casting Technique ◽  
Industry Needs

Aims: AA7076 is a well-defined alloy for its excellent physical and mechanical properties such as high strength, toughness, and low density. To reach the expectations of the automobile and aerospace industry needs, the properties of AA7076 alloy has to be improved by reinforcing nano-sized graphene amine particles. Objectives: Synthesis and characterization of the AA7076 alloy reinforced with graphene nanofillers for different structural engineering applications. Methods: In this present work, nano-sized graphene amine particles were added and dispersed homogeneously using a motorized stir casting technique. AA7076/graphene amine composites were prepared by varying wt.% percent of graphene amine reinforcement particles (0.5, 0.75, 1, and 1.25 wt.% (weight-percentage)). Results: The SEM micrographs reveal the homogeneous distribution of graphene amine reinforcements along the grain boundaries of the AA7076 matrix material. The experimental test results showed that the addition of graphene amine reinforcements, the mechanical properties of the AA7076/graphene amine composite, improved as compared to the AA7076 matrix material. Conclusion: The composite with 1 wt.% graphene amine showed higher strength and hardness as compared to other reinforcements.

scholarly journals Abrasive Wear Characteristics of Composite Material (AA 7075 / SiC) Synthesized by Stir Casting

2018 ◽  
Vol 25 (1) ◽  
pp. 32-39
Author(s):  
Khansaa Dawood Salman
Keyword(s):  
Composite Material ◽  
Abrasive Wear ◽  
Wear Test ◽  
Hardness Test ◽  
Stir Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
Industrial Sectors ◽  
Microstructure Examination ◽  
Aa 7075

Aluminum Metal Matrix Composites (ALMMCs) was prepared by using stir casting technique for AA 7075 aluminum alloy as a matrix reinforced with SiC particles at various percentages (3, 6, 9 and 12 wt. % ) and 75µm in grain size. The prepared composite material can be used for many applications such as aerospace, automobiles and many industrial sectors. Abrasive wear test was carried out by two stages: the first stage was done by changing the emery papers at various grit sizes 180, 320, 500, and 1000µm with constant applied load 15N. While the second stage was carried out by changing the applied loads 5, 10, 15, 20 and 25N with constant emery paper at 320 µm grit size. Microstructure examination, hardness test and roughness test were performed before and after abrasive wear test. The results of this investigation showed the increasing in weight percentage of the reinforcement material leads to increase the hardness, roughness and improving the abrasive wear resistance.  

Influence of precipitation hardening parameters on the microstructure and mechanical properties of extruded AA2014/eggshells green composites

2017 ◽  
Vol 51 (30) ◽  
pp. 4261-4271 ◽  
Author(s):  
Shashi Prakash Dwivedi ◽  
Satpal Sharma ◽  
Raghvendra Kumar Mishra
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Precipitation Hardening ◽  
Testing Machine ◽  
Stir Casting ◽  
Casting Technique ◽  
Electromagnetic Stir Casting

The AA2014/5 wt. % carbonized eggshells metal matrix composite used in this study was fabricated by electromagnetic stir casting technique and immediately extruded on universal testing machine at 60 MPa using cylindrical H13 tool steel die coated with graphite to avoid upper flow of eggshells particles and to improve wettability of eggshells with AA2014 alloy. Microstructures of composites show some agglomerations in non-extruded samples while uniform distribution of carbonized eggshell particles. Optimum combination of precipitation hardening parameters achieved using response surface methodology to further improve the properties of AA2014/5 wt. % eggshell composites. Optimum values of solutionizing time, aging temperature and aging time were found to be 4.5 h, 250℃ and 13.5 h, respectively. More grain refinement of extruded AA2014/5 wt. % eggshell composites were observed after heat treatment at optimum precipitation hardening parameters. After heat treatment, fractographs of the AA2014/5 wt. % eggshells composite showed that fracture is dominated by trans-granular type. Density of the AA2014 is 5% higher than AA2014/5 wt. % eggshells metal matrix composite. It is observed that mechanical properties improve when carbonized eggshell particles are reinforced in matrix AA2014 aluminium alloy. After the heat treatment at optimum precipitation hardening parameters, mechanical properties are further improved.

scholarly journals Experimental Studies on Mechanical Properties of Carbon Nanotube Reinforced Aluminum 7075 Composite Material

2021 ◽  
Vol 53 (6) ◽  
pp. 210611
Author(s):  
Mahendra Kumar Chidananda Swamy ◽  
Raghavendra Bommanahalli Venkatagiriyappa
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Compression Strength ◽  
Experimental Studies ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Multiwalled Carbon ◽  
Casting Technique ◽  
The Matrix ◽  
Aluminum 7075

In the present work multiwalled carbon nanotubes were  added as  reinforcement to aluminum 7075 matrix at 0.5%, 0.75% and 1.25% by weight proportion through stir casting technique. The mechanical properties of the produced composite were studied. The composite has considerably good tensile and wear resistance properties and hence finds its best suited application in aircraft frame and wings structures. Microstructure analysis through SEM showed a uniform distribution of the reinforcement material in the matrix. XRD graphs were taken at selected points during microscopic studies to determine the chemical composition of the matrix alloy, the reinforcement and the composite. The experimental results showed that 1.25% reinforcement in the composite material exhibited a tensile strength of 560 N/mm2 and a compression strength of  649.6 N/mm2 as the highest among the compositions. Thus,  the reinforcement addition at 1.25% improved the tensile and compression strength of the composite material.

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.

scholarly journals Evaluation of Mechanical Properties of AA7075 /Al2O3/Mg Hybrid Composites

2019 ◽  
Vol 8 (6) ◽  
pp. 5044-5046 ◽  
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Casting Process ◽  
Stir Casting ◽  
Tensile Behaviour ◽  
Matrix Composites ◽  
Compression Behavior ◽  
Weight Percentage ◽  
Fea Simulation ◽  
Alloy Metal

The present work was planned to evaluate the mechanical properties of alumina reinforced aluminium alloy such hardness and compression behavior of al2o3 /aa7075 alloy metal matrix composites. Both, experimental and finite element analyses were carried out to establish tensile behaviour of the composites with different weight percentage of al2o3 fabricated by the stir casting process. The results concluded that addition of alumina to the aa7075 improves the mechanical properties of the composite. Further the results of FEA simulation of the composites are close to the actual results which shows that cost and time can be reduced if FEA is performed

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