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.

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.

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 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.

Pin Temperature and Al2O3 Fillings Effect on Sliding Wear Characteristics of Al–25Zn/Al2O3 Composites

2021 ◽  
pp. 135065012110251
Author(s):  
Parmeshwar P Ritapure ◽  
Yashwant R Kharde ◽  
Rashmi G Yadav ◽  
Suyash Y Pawar ◽  
Bharat D Aldar
Keyword(s):  
Material Removal ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Good Precision ◽  
Wear Properties ◽  
Casting Technique ◽  
Mechanical And Tribological Properties ◽  
The Matrix

This investigation studied the effect of Al2O3 reinforcement on sliding wear (dry) characteristics of Al–25Zn/Al2O3 composites at various temperatures, speeds, and loads applied for 1400 m sliding distances as per the Taguchi L16 orthogonal array using a tribometer with an Emergency Number24 shaft steel disk. Al–25Zn alloy-based composites reinforced with 10, 15, and 20 wt% of Al2O3 particles were fabricated by the stir casting technique. The results show a significant alteration in mechanical and tribological properties with reinforcement of Al2O3 content. The optimum mechanical and sliding wear properties are seen for the composite with 10 wt% of Al2O3. The material removal in the matrix alloy is due to adhesion and in composites mainly due to abrasion and delamination. The developed regression model and the artificial neural network model can forecast the composite's wear behavior with good precision.

Characterization of physical and mechanical properties of aluminium based composites reinforced with titanium diboride particulates

2020 ◽  
pp. 002199832098080
Author(s):  
Dipankar Dey ◽  
Abhijit Bhowmik ◽  
Ajay Biswas
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Titanium Diboride ◽  
Microstructural Analysis ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Casting Process ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Sem Analysis

Particulate reinforced aluminium matrix composites are one of the most attractive approaches for applications where high strength and hardness combinations are necessary. The aspiration of this study is to investigate the effect of titanium diboride addition on physical and mechanical properties of Al2024-TiB2 composites manufactured using stir casting route, by varying the weight percentages (wt.%) (0, 3, 6 and 9 percent) of titanium diboride particulates. During the casting process, stirring time and speed were kept constant and same for all the composites. Microstructural analysis demonstrates uniformity in TiB2 distribution and also strong matrix-reinforcement bonding which can be as a result of magnesium addition and preheating of titanium diboride particles before incorporating into the molten aluminium. With an increment in the wt.% of TiB2 particulates, hardness and tensile strength of the prepared composites improved, a significant improvement in hardness as well as tensile strength is encountered in Al2024-9% TiB2 composite, which is 44.94% and 35.49% higher than Al2024 matrix alloy, respectively. SEM analysis of the fractured surfaces revealed that the mode of fracture of unreinforced material is purely ductile but reinforced material fractured by nucleation of cracks and plastic deformation.

scholarly journals Manufacturing Feasibility of Al6061and Boron Carbide Particulate Reinforcement to Cast a Metal Matrix Composite with Wettability Agent

2019 ◽  
Vol 9 (2) ◽  
pp. 4910-4914
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Casting Process ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Optical Microscope ◽  
Alloy Matrix ◽  
Casting Technique ◽  
Base Matrix

Aluminium metal matrix composite with a combination of Al6061 as base matrix and B4C as particulate up to 0 to 3% by weight in the steps of 1 wt% is manufactured by liquid metallurgy method by stir casting process. The choice of the process has been concluded from the literature survey and is tabulated. The steps involved in the processing of composite have been reported in detail. A conventional stir casting technique and the steps followed are recorded. The different process parameters controlled during the process have been reported. With the processing of the composite, the chemical stability between the particulate and the alloy matrix as known from its properties has been ascertained. The addition of wettability agent and thus its effect has been discussed. The optical microscope images of the processed composite have been presented in the paper as an indication to successful fabrication of composite. Based on the images, distribution of particulates in matrix alloy and possible reasons for this to get exhibited have been discussed. The paper aims at bridging the gap of essentials of wetting of solid particulates and the practice of casting.

scholarly journals Properties of High-Strength Flowable Mortar Reinforced with Palm Fibers

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Eethar Thanon Dawood ◽  
Mahyuddin Ramli
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Test Results ◽  
Palm Fiber ◽  
Toughness Index ◽  
Strength And Toughness

This study was conducted to determine some physical and mechanical properties of high-strength flowable mortar reinforced with different percentages of palm fiber (0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, and 1.6% as volumetric fractions). The density, compressive strength, flexural strength, and toughness index were tested to determine the mechanical properties of this mortar. Test results illustrate that the inclusion of this fiber reduces the density of mortar. The use of 0.6% of palm fiber increases the compressive strength and flexural strength by about 15.1%, and 16%, respectively; besides, the toughness index (I5) of the high-strength flowable mortar has been significantly enhanced by the use of 1% and more of palm fiber.

Thermal Property Evaluation of Chilled Aluminum-Alumina MMC

2015 ◽  
Vol 1101 ◽  
pp. 79-82
Author(s):  
B.C. Suresh ◽  
S.B. Arun
Keyword(s):  
Thermal Expansion ◽  
Composite Materials ◽  
Thermal Property ◽  
Coefficient Of Thermal Expansion ◽  
Matrix Material ◽  
High Strength ◽  
Stir Casting ◽  
Al Alloy ◽  
Industrial Growth ◽  
Property Evaluation

Now a day’s composite materials are taking very important role in industrial growth. Composite materials are widely used in Automobiles, aerospace, submarine and also in other major fields, due to their special characteristics like light weight, high strength, stiffness, corrosion resistance. The determination of Coefficient of Thermal Expansion (CTE) of MMCs is important to aid its usage in high temperature environment as in the case of automobile combustion chamber. In these applications the stability of the composites over a long period of operation is a critical design considerationPresent work deals with the thermal property evaluation of the Al alloy / alumina metal matrix composite developed using the Stir Casting with chilling route technique. LM 26 Al alloy is being selected as the matrix material as it is a potential alloy for automotive piston applications. Al alloy / alumina MMCs was cast under end chilling technique by dispersing the reinforcement from 6 to 12 wt% the steps of 3% to study the variation in its thermal properties. At the same time chill material is also changed (Copper and MS) for different composition of MMCs cast to study the thermal behavior variations. After casting the required MMC, test specimens were prepared as per the standards to conduct thermal conductivity (K) tests and coefficient of thermal expansion (CTE) tests. Above tests were repeated for different composites containing different weight % of dispersed cast using different chills.

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.

Study on Mechanical Property of Aluminium 6061 with E Glass Fiber Reinforced Composite

2018 ◽  
Vol 877 ◽  
pp. 50-53 ◽  
Author(s):  
Vinayashree ◽  
R. Shobha
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
High Strength ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Reinforced Composite ◽  
Reinforcement Content ◽  
Glass Fiber Reinforced ◽  
The Matrix ◽  
Glass Fibre Reinforced

Aluminium composites are in predominant use due to their lower weight and high strength among the MMC’s. Aluminium 6061 is selected as matrix and E-glass fiber is selected as reinforcement. Fabrication of composite is done by stir casting method. Each fabrication carries the E-glass reinforcement content varied from 2% to 10%. The present article attempts to evaluate the mechanical properties of E-glass fibre reinforced composite and study the effect of reinforcement on the matrix alloy through mechanical properties. When compared to ascast mechanical properties the UTS has increased from 74.28 N/sq mm to 146.8 N/sq mm for a composite at 6% E-glass. The hardness of as-cast has also increased from 22 RHB to 43 RHB at 6% E-glass and the wear of composite has exhibited a decreasing tend with increase in reinforcement content along the sliding distance. The results are analyzed in certain depth in the current paper. The mechanical properties of composites have improved with the increase in the weigh percentage of glass fiber in the aluminium matrix.

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