scholarly journals Influence of Boron Fiber Powder and Graphite Reinforcements on Physical and Mechanical Properties of Aluminum 2024 Alloy Fabricated by Stir Casting

2019 ◽  
Vol 07 (03) ◽  
pp. 103-116 ◽  
Author(s):  
H. S. Kumaraswamy ◽  
Vinjamuri Bharat ◽  
T. Krishna Rao
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Stir Casting ◽  
Boron Fiber ◽  
2024 Alloy

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.

scholarly journals The Effect of Stirrer Depth And Electroless Coating of Hardness And Tensile Strength in Aluminium Matrix Composite AL6061-AL2O3

2021 ◽  
Vol 20 (1) ◽  
pp. 23
Author(s):  
Sukma Andini ◽  
Eko Surojo ◽  
Teguh Triyono
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Physical And Mechanical Properties ◽  
Hardness Test ◽  
Stir Casting ◽  
Industrial Sector ◽  
Aluminium Matrix Composite ◽  
Electroless Coating

Metal matrix composite (MMC) are composite materials that are widely used in the industrial sector. Examples of metal matrix composites are Al6061 as matrix alloys and Al<sub>2</sub>O<sub>3</sub> as reinforcement. In general, making Al6061-Al<sub>2</sub>O<sub>3 </sub>composites using the stir casting method. The stirring parameter in the stir casting affects the physical and mechanical properties of the composites. The physical and mechanical properties of composites can be improved by increasing the wettability of the reinforcement. This research was conducted to determine the effect of the depth of stirring and electroless coating treatment on the hardness and tensile strength of Al6061-Al<sub>2</sub>O<sub>3</sub> composites. The process of making composites with Al<sub>2</sub>O<sub>3</sub> reinforcing particles with 6% weight fraction mixed with aluminum alloys and 2.5% magnesium powder as a wetting agent. Variations of this study were the depth of the stirrer and electroless coating treatment. The depths of stirring used for the experiment were 30%, 45%, and 60% of the height of the fluid. The testing phases in this study were the density and porosity test, metallographic observation, hardness test, and tensile test. The most efficient variation of the mixer depth was obtained at a mixer depth of 30% of the fluid height. The highest hardness and tensile strength test results are hardness value of 72.43 HBN and tensile strength of 182.19 MPa with electroless coating reinforcement treatment

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.

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.

Aluminum-Silicon Carbide Composites for Enhanced Physio-Mechanical Properties

2012 ◽  
Vol 576 ◽  
pp. 370-373 ◽  
Author(s):  
D. Sujan ◽  
C.W. Yeo ◽  
Muhammad Ekhlasur Rahman ◽  
M. Mohan Reddy ◽  
Md Abdul Maleque ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Metal Matrix ◽  
Physical And Mechanical Properties ◽  
Weight Fraction ◽  
Stir Casting ◽  
Casting Method ◽  
Aluminum Silicon Carbide ◽  
Particulate Reinforced ◽  
Aluminium Metal

Stir casting method is used in the production of SiC reinforced-aluminium metal matrix composite (AMMC) to enhance the properties of base metal. Different weight fraction of Silicon carbide, SiC (5 wt%, 10 wt% and 15 wt %) particulate-reinforced AMMCs are fabricated and characterizations of physical and mechanical properties of the materials are performed based on the experimental. The microstructure of the fabricated composite material are studied and analyzed. The results indicate that the mechanical properties of the composite, including yield strength, tensile strength and hardness are enhanced by the increment of the weight fraction of reinforcing phase. Nevertheless, the elongation and fracture toughness of the composite decreased as the reinforcing phase increased. This is mainly due to the brittleness of the SiC particles which act as micro void initiator.

Linking Spectrograph to Mechanical and Physical Properties of X7475 Experimental Alloys Produced from Recycling Beverage Cans for Bumper Beam Applications

2020 ◽  
Vol 1010 ◽  
pp. 52-57
Author(s):  
Abubakar Kazeem ◽  
Nur Azam Badarulzaman ◽  
Wan Fahmin Faiz Wan Ali
Keyword(s):  
Mechanical Properties ◽  
Automobile Industry ◽  
Natural Aging ◽  
Physical And Mechanical Properties ◽  
Stir Casting ◽  
Passenger Cars ◽  
Bumper Beam ◽  
Mechanical And Physical Properties ◽  
New Material ◽  
7Xxx Alloy

The automobile industry intends to consume more aluminium alloys in an effort to reduce the greenhouse emissions through the cut in the weight of the passenger cars. Experimental X7475 aluminium alloy is a good candidate to achieve this mission. Past efforts targeted at exploring the aluminium for bumper beam applications and even the recovery of aluminium from recycled beverage can (RBC) were not with the aim of upgrading the 3xxx to a novel 7xxx alloy. The wt. % of Zn was 5.0, 4.5 and 4.0, while Mg was left at 1.50, 1.25 and 1.00 wt. % with Mn at a peak of 0.075, 0.050 average and a least wt. % of 0.025. Alloys were homogenized and taken through annealing (O), natural aging (T4) and artificial aging (T6). The effect of hardening phases such as MgZn2 (ICDD 034-0457) due to heat treatments on the physical and mechanical properties of the new X7475 alloys was investigated. Formation of precipitates affected the density and hardness of the alloys produced via stir casting route. A least hardness of 63.40 Hv was observed in alloy H with a density of 2.7264 g/cm3 while the maximum of 113.06 Hv was recorded against alloy C in as-cast (AC). The result has contributed to the database of experimental alloys with the possibilities of producing a new material from RBCs for bumper beam applications. Future investigation should employ design of experiment (DOE) in optimization of the heat treatment for better mechanical properties.

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.

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