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.

Influence of nano-sized Al2O3 reinforcements on the mechanical behavior of the Al7075 composites

2021 ◽  
Vol 13 ◽  
Author(s):  
M S Prashanth Reddy ◽  
H P Raju ◽  
Nagaraj R Banapurmath ◽  
Vinod Kumar V Meti ◽  
Arun Y Patil
Keyword(s):  
Mechanical Behavior ◽  
Structural Engineering ◽  
Matrix Material ◽  
High Strength ◽  
Stir Casting ◽  
Nano Particles ◽  
Homogeneous Distribution ◽  
Weight Percentage ◽  
Casting Technique ◽  
Al2o3 Particles

Aims: Al7075 is a well-defined alloy for its excellent physical and mechanical behavior such as high strength, toughness, and low density. To reach the expectations of the automobile and aerospace applications, the properties of Al7075 alloy has to be improved by reinforcing nano-sized Al2O3 particles. Objectives: Synthesis and characterization of the Al7075 alloy reinforced with Al2O3 nano particles for different structural engineering applications. Methods: In this present work, nano-sized Al2O3 particles were added and dispersed homogeneously using a stir casting technique. AA7076/Al2O3 composites were prepared by varying wt.% percent of Al2O3 reinforcement particles (0.75, 1, 1.25, 1.5. 1.75 and 2 wt.% (weight-percentage)). Results: The SEM micrographs reveal the homogeneous distribution of Al2O3 reinforcements along the grain boundaries of the Al7075 matrix material. The experimental test results showed that the addition of Al2O3 reinforcements, the mechanical properties of the Al7075/Al2O3 composite, improved as compared to the Al7075 matrix material. Conclusion: The composite with 1.5 wt.% Al2O3 showed higher strength and hardness as compared to other reinforcements.

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.

Influence of ZrO2 nano particles on the behavior of mechanical and tribological properties of the AA7075 composite

2020 ◽  
pp. 239779142098152
Author(s):  
MS Prashanth Reddy ◽  
HP Raju ◽  
Nagaraj R Banapurmath ◽  
Vinod Kumar V Meti
Keyword(s):  
Matrix Material ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Nano Particles ◽  
Test Results ◽  
Casting Technique ◽  
Mechanical And Tribological Properties ◽  
Base Matrix

A well-known AA7075 alloy used for most of the structural, aerospace, and automobile applications due to its excellent properties such as high strength, corrosion-resistant, and low density. To encourage industrialists, the physical and mechanical properties of the composite has to improve by reinforcing hard ceramic particles. In this investigation varying wt.% of hard ZrO2 (zirconium dioxide) particles (0.75, 1, 1.25, 1.5, 1.75, and 2 wt.%) are reinforced in AA7075 matrix alloy to form a composite. Motorized stir casting technique induced to distribute reinforcement particles homogeneously. The SEM micrographs reveal that uniform distribution of ZrO2 particles can be achieved after inducing motorized stir casting technique into the molten composite. The experimental test results revealed that the addition of ZrO2 particles enhanced the hardness and tensile strength of the AA7075/ZrO2 composite as compared to base matrix material. Among all composites, AA7075/1.5ZrO2 show higher hardness and strength.

scholarly journals Microstructure, Tensile Properties and Hardness Behavior of Al7075 Matrix Composites Reinforced With Graphene Nanoplatelets and Beryl Fabricated by Stir Casting Method

2019 ◽  
Vol 9 (1) ◽  
pp. 6761-6765 ◽  
Keyword(s):  
Tensile Strength ◽  
Volume Fraction ◽  
Hybrid Composites ◽  
Matrix Material ◽  
Stir Casting ◽  
Hybrid Nanocomposites ◽  
Homogeneous Distribution ◽  
Casting Technique ◽  
Aluminum 7075 ◽  
Scanning Electron

In this research, an effort is made to familiarize and best potentials of the reinforcing agent in aluminum 7075 matrices with naturally occurring Beryl (Be) and Graphene (Gr) to develop a new hybrid composite material. A stir casting technique was adopted to synthesize the hybrid nanocomposites. GNPS were added in volume fractions of 0.5wt%, 1wt%, 1.5wt%, and 2wt% and with a fixed volume fraction of 6 wt.% of Beryl. As cast hybrid composites were microstructurally characterized with scanning electron microscopy and X-ray diffraction. Microstructure study through scanning electron microscope demonstrated that the homogeneous distribution reinforcement Beryl and GNPs into the Al7075 matrix. Brinell hardness and tensile strength of synthesized materials were investigated. The hybrid Al7075-Beryl-GNPs composites showed better mechanical properties compared with base Al7075 matrix material. The ascast Al7075-6wt.% Beryl-2wt.%GNPs showed 49.41% improvement in hardness and 77.09% enhancement in ultimate tensile strength over Al7075 alloy.

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.

scholarly journals Effect of Feeding Technique in Mechanical Behaviour of Sic/Tio2 Reinforced AA 6082 Composites

2019 ◽  
Vol 8 (3) ◽  
pp. 8233-8236
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stir Casting ◽  
Homogeneous Distribution ◽  
Micro Hardness ◽  
Casting Technique ◽  
Feeding Technique ◽  
Normal Feeding ◽  
Feeding Process ◽  
Effect Of Feeding

In this study, SiC and TiO2 nanoparticles reinforced AA 6082 composites were prepared by stir casting technique. The optimized quantities of reinforcement particles used in composites was 6 Wt.%. The mechanical properties such as tensile strength, compressive strength and hardness of prepared composites were improved significantly about with novel multi-encapsulate feeding as compared normal feeding technique. Also, the drastic improvement was noted with microstructure in order to form of health clusters and homogeneous distribution under novel feeding than normal feeding. The testing shows that the micro hardness and tensile strength was improved about 10% and 5% than normal feed process. Lesser blow holes and good matrix materials dispersion was found in multi encapsulate feeding process. From this experimentation, it was confirmed that multiple encapsulate feeding of reinforcement particles can increase the mechanical strength and microstructure properties than normal feed technique.

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.

Microstructure and Mechanical Behavior of Nanoparticles Reinforced Metal Matrix Composites – A Review

2014 ◽  
Vol 592-594 ◽  
pp. 939-944 ◽  
Author(s):  
S. Santhosh Kumar ◽  
Somashekhar S. Hiremath
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
High Performance ◽  
Physical And Mechanical Properties ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Technique ◽  
Effect Of Particle Size ◽  
Properties Of Composites

Micro sized particles such as SiC, Al2O3and diamond particles reinforced with metal matrix composites are most commonly used in high performance applications like military, automotive and aerospace industries. Nowadays nano sized particles are replacing the micro sized particles because of their improved physical and mechanical properties. This paper reviews the stir processing method, mechanical properties, effect of particle size on properties of composites and structure of the metal matrix composites reinforced with nanoparticles. Among the variety of liquid metallurgy techniques processes available for preparing metal matrix composites, stir casting technique is generally accepted route and currently practised commercially because of its simplicity flexibility and Uniform distribution.

scholarly journals Microstructural and Mechanical Properties of AZ31B/Graphene Nanocomposite Produced by Stir Casting

2021 ◽  
Vol 31 (1) ◽  
pp. 51-56
Author(s):  
Ashish Kumar Srivastava ◽  
Ambuj Saxena ◽  
Nagendra Kumar Maurya ◽  
Shashi Prakash Dwivedi
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Matrix Material ◽  
Microstructural Analysis ◽  
Stir Casting ◽  
Reinforcement Particle ◽  
Casting Technique ◽  
Reinforcement Material ◽  
The Matrix

In the current scenario, the development of high strength and low weight material is the demand of the aerospace defence organizations. Magnesium alloy based composite has low density, good mechanical and physical properties. In this study, magnesium alloy AZ31B is used as reinforcement material and graphene nanoparticle is used as reinforcement material. Stir casting technique is used for the development of composite material. Three weight percentages i.e. 0.4%, 0.8% and 1.2% are used for the casting. The microstructural analysis is performed to validate the presence of graphene particles in the developed composite. Further mechanical properties such as tensile strength, hardness and toughness are evaluated. Experimental results confirm that GNPs particles are uniformly distributed into the matrix material. It was observed that due to the reinforcement of GNPs particles tensile strength of the material is improved by 31.17%, hardness is improved about 46.9%. However, the peak value of toughness is observed 12.6 Jule/cm2 in the matrix material, it decreases by increasing the wt% of reinforcement particle and lowest value of toughness of 6.82 Jule/cm2 is observed in AZ31B/1.2%GNP composite.

Sign in / Sign up

Export Citation Format

Share Document