Microstructure Evaluation on Micro and Nano Slag Particles Reinforced AA7075 Composites

2022 ◽  
Vol 1048 ◽  
pp. 43-53
Author(s):  
Ippey Gopi lakshmi ◽  
Yajjala Ravi Kanth ◽  
Inampudi Narasimha Murthy ◽  
Jinugu Babu Rao
Keyword(s):  
Research Work ◽  
Stir Casting ◽  
Alloy Matrix ◽  
Casting Technique ◽  
Microstructure Evaluation ◽  
The Matrix ◽  
Ferrochrome Slag ◽  
Aa 7075 ◽  
7075 Alloy ◽  
The Given

The research work was focused on utilization of solid industrial waste. In order to investigate the properties of Fe-Cr slag particulates strengthened AA7075 composites. In this paper addition of ferrochrome slag particles as reinforcement in AA 7075 alloy processed through stir casting technique. By varying size of ferrochrome slag particles were added to evaluate the size effects in the given alloy matrix. Prepared composites were subjected to heat treatment and evaluated for microstructure analysis. The results show that there is a uniform distribution of particles in the matrix and that there is a strong bond between the matrix and the reinforcement. Grain refinement in the alloy matrix is observed by inducing slag particles. Further nanocomposites show lower grain size values.

Influence of Micro and Nano Particles on Mechanical Behaviour of Slag Reinforced AA7075 Composites

2022 ◽  
Vol 1048 ◽  
pp. 33-42
Author(s):  
Ippey Gopi lakshmi ◽  
Yajjala Ravi Kanth ◽  
Jinugu Babu Rao
Keyword(s):  
Mechanical Properties ◽  
Base Alloy ◽  
Casting Process ◽  
Stir Casting ◽  
Nano Particles ◽  
Alloy Matrix ◽  
The Matrix ◽  
Ferrochrome Slag ◽  
Aa 7075 ◽  
7075 Alloy

Present studies are based on adding ferrochrome slag as reinforcement in AA 7075 alloy manufactured via the stir casting process. Two different slag particles are chosen; they are 36μm (Micro) and 68 nm (Nano). This was added to evaluate the size effects in the given alloy matrix. The composites were tested for unique microstructural properties and mechanical properties. The results Revealed uniform particle distribution within the matrix and good bonding between the matrix and the reinforcement. Better mechanical properties are obtained for both micro and nanocomposites than base alloy. This is further enhanced by ageing treatments. nanocomposites show superior mechanical properties than either alloy or micro composite. Interestingly, nanocomposite exhibits an increase in strength with good ductility; same is confirmed with fracture studies.

Mechanical characterization of LM25 alloy matrix composite reinforced with boron carbide

2021 ◽  
pp. 002199832110055
Author(s):  
Zeeshan Ahmad ◽  
Sabah Khan
Keyword(s):  
Tensile Strength ◽  
Boron Carbide ◽  
Mechanical Characterization ◽  
Stir Casting ◽  
Surface Mapping ◽  
Alloy Matrix ◽  
Casting Technique ◽  
The Matrix ◽  
Carbide Particles

Alumnium alloy LM 25 based composites reinforced with boron carbide at different weight fractions of 4%, 8%, and 12% were fabricated by stir casting technique. The microstructures and morphology of the fabricated composites were studied by scanning electron microscopy and energy dispersive spectroscopy. Elemental mapping of all fabricated composites were done to demonstrate the elements present in the matrix and fabricated composites. The results of microstructural analyses reveal homogenous dispersion of reinforcement particles in the matrix with some little amount of clustering found in composites reinforced with 12% wt. of boron carbide. The mechanical characterization is done for both alloy LM 25 and all fabricated composites based on hardness and tensile strength. The hardness increased from 13.6% to 21.31% and tensile strength 6.4% to 22.8% as reinforcement percentage of boron carbide particles increased from 0% to 12% wt. A fractured surface mapping was also done for all composites.

Mechanical properties and fracture mechanism of ZA-27/TiO2 particulate metal matrix composites

2003 ◽  
Vol 217 (3) ◽  
pp. 201-206 ◽  
Author(s):  
K H W Seah ◽  
S C Sharma ◽  
M Krishna
Keyword(s):  
Mechanical Properties ◽  
Titanium Dioxide ◽  
Fracture Mechanism ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Primary Objective ◽  
Matrix Composites ◽  
Casting Technique ◽  
Titanium Dioxide Particle ◽  
The Matrix

The mechanical properties and the fracture mechanism of composites consisting of ZA-27 alloy reinforced with titanium dioxide particles were investigated with the primary objective of understanding the influence of the particulate reinforcement on the mechanical behaviour of the ZA-27 alloy. The titanium dioxide particle content in the composites ranged from 0 to 6 per cent, in steps of 2 wt %. The composites were fabricated by the stir casting technique in which the reinforcement particles were dispersed in the vortex created in the molten matrix alloy. The study revealed improvements in Young's modulus, ultimate tensile strength (UTS), compressive strength, yield strength and hardness of the composites as the titanium dioxide content was increased, but at the expense of ductility and impact strength. The fracture behaviour of the composite was also significantly influenced by the presence of titanium dioxide particles. Eventual fracture was a result of crack propagation through the matrix as well as through the reinforcing particles. Scanning electron microscopy and fractography analyses were carried out to provide suitable explanations for the observed phenomena.

Effect of Cast Geometries on Particle Dispersion in Metal Matrix Composites

2018 ◽  
Vol 877 ◽  
pp. 60-65 ◽  
Author(s):  
Vishal Mehta ◽  
Roma Patel ◽  
Mayur Sutaria
Keyword(s):  
Research Work ◽  
Stir Casting ◽  
Particle Dispersion ◽  
Processing Route ◽  
Metal Composite ◽  
Matrix Composites ◽  
Casting Technique ◽  
Discontinuous Reinforcement ◽  
Plate Geometry ◽  
Microstructural Examination

Metal composite materials are not being extensively used because of their complex processing, agglomeration and dispersion of particles in case of discontinuous reinforcement. Significant amount of research work has been carried to understand and improve primary processing of metal composites using liquid processing route. Most of the research revealed the fact that composites were cast either in plate geometry or geometry of crucible. Present work mainly focuses to examine effect of mold cavity geometries on dispersion of particles in solidifying composite slurries. Aluminium alloy composites using silicon carbide (SiC) particles were manufactured using stir casting technique. ‘T’ shape and plus shape geometries were cast in the present work. Critical velocity and solidification front velocity was analyzed to investigate effect of cast geometries on particle dispersion. Microstructural examination revealed that cast geometries have significant effect on dispersion of particles.

scholarly journals Effect of addition of different reinforcements on the microstructure and mechanical characterization of the Al-Flyash composites

2021 ◽  
Vol 15 (56) ◽  
pp. 217-228
Author(s):  
Milind K. Wasekar ◽  
Mohan P. Khond
Keyword(s):  
Tensile Strength ◽  
Hybrid Composites ◽  
Tensile Tests ◽  
Stir Casting ◽  
Interface Bonding ◽  
Casting Technique ◽  
Testing Procedures ◽  
The Matrix ◽  
Aluminum 6061 Alloy

The aim of this work is to investigate the influence of the addition of silicon carbide and molybdenum disulfide on the microstructure and the tensile strength of the Al-Flyash hybrid composites prepared using the stir casting technique. The composite with aluminum 6061 alloy as the matrix and flyash as the reinforcement, with different weight fractions, is investigated to study its microstructure and the tensile strength. The same has been compared with the hybrid composites with Aluminum-Flyash/SiC and Aluminum-Flyash/MoS2 for different weight fractions of the reinforcements. The tensile tests were conducted as per ASTM standard testing procedures at room temperature. From the results it is identified that tensile strength of the Al6061-Flyash composite is lesser than the Al6061-Flyash/SiC and Al6061-Flyash/MoS2 hybrid composites. It is also observed that increment in the composition of the SiC and MoS2 causes the increment in the tensile strength of the hybrid composite. This increment in the tensile strength is due to good interface bonding and uniform distribution of the reinforcements in the composite.

scholarly journals Study on Properties of Multi Walled Carbon Nanotube Reinforced Aluminum Matrix Composite through Casting Technique

2021 ◽  
Vol 18 (1) ◽  
pp. 97-101
Author(s):  
Shuib Pasha S A ◽  
Nayeem Ahmed M ◽  
Tilak S R ◽  
Anil Kumar B N
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Matrix Composite ◽  
Research Work ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Optical Microscope ◽  
Aluminum Matrix Composite ◽  
Casting Technique ◽  
Multi Walled Carbon Nanotubes

Composite materials are defined as material systems consisting of mixture of or combination of two or more micro constituents insoluble in each other and differing in form and or material composition. In this study Metal Matrix Composite (MMCs) has been produced using stir casting method for performing the mechanical properties. Most of the engineering industries want light and better mechanical properties of components; this can be achieved by MMCs of Aluminium because of its excellent performance. In this research work we fabricate the Aluminium by liquid route. Here Al 7075 is used as a base metal and Multi Walled Carbon Nanotubes (MWCNT) used as sub metal with various percentages. Experiments were conducted to analyze microstructure, hardness & tensile strength. By using optical microscope and Scanning Electron Microscope (SEM) we analyze the sample specimens are well dispersion in MWCNT with AA 7075. Hardness and tensile strength increases with increasing of wt. %. Hardness of material increases with increase in percentages of MWCNT, whereas tensile strength of the material increases with increase in percentages of MWCNT and Elongation reduces

Optimization of Drilling Process on Al-SiC Composite using Grey Relation Analysis

2015 ◽  
Vol 5 (4) ◽  
pp. 17-31 ◽  
Author(s):  
K. Vinoth Babu ◽  
M. Uthayakumar ◽  
J. T. Winowlin Jappes ◽  
T. P. D. Rajan
Keyword(s):  
Volume Fraction ◽  
Cutting Speed ◽  
Microscopy Study ◽  
Stir Casting ◽  
Experimental Result ◽  
Drilling Process ◽  
Machining Parameters ◽  
Casting Technique ◽  
The Matrix ◽  
Coated Carbide

This study reveals the multi objective optimization of machining parameters in drilling of SiC reinforced with aluminium metal matrix composites through grey relational analysis. The composite is prepared with varying volume fraction of the reinforcement by liquid metal stir casting technique. Uniform distribution of SiC particle in the matrix is witnessed through microscopy study and observed that the hardness and strength on different composite. The drilling experiments were performed with coated carbide tool with different point angle such as 90o, 120o and 140o. Cutting speed, feed, point angle and volume fraction are considered as input parameters and the performance characteristics such as surface roughness and thrust force are observed as output response in this study. The significant contributions of these factors are determined using Analysis of Variance (ANOVA). The optimized process parameters have been validated by the confirmation test. The experimental result shows that point angle influences more on output performance followed by feed and cutting speed.

Tensile Behavior of Aluminium2014 Reinforced with Boron Carbide and Copper Coated Short Basalt Fiber Based Hybrid Composites

2019 ◽  
Vol 895 ◽  
pp. 187-193 ◽  
Author(s):  
S.R. Ranganatha ◽  
M. Shantharaja
Keyword(s):  
Boron Carbide ◽  
Electroless Deposition ◽  
Hybrid Composites ◽  
Research Work ◽  
Basalt Fiber ◽  
Stir Casting ◽  
Tensile Behavior ◽  
Copper Sulphate Solution ◽  
Casting Technique ◽  
Uniform Deposition

In this research work an effort has been made to study the tensile behavior of boron carbide and copper coated short basalt fiber reinforced with Al2014 based hybrid composites are prepared by stir casting technique. To avoid the interfacial reactions between basalt fiber and matrix Al2014 alloy the fibers are coated with copper using copper sulphate solution by electroless deposition method.The coated fiber was observed by scanning electron microscopy (SEM). It has been clearly revealed the uniform deposition of copper on the surface of fiber and tensile behavior of Hybrid composites was increased with increase in the wt% of reinforcements. At 6% boron carbide and 8% copper coated basalt fiber shows maximum tensile property.

Optimization of Drilling Process on Al-SiC Composite Using Grey Relation Analysis

2017 ◽  
pp. 392-406
Author(s):  
K. Vinoth Babu ◽  
M. Uthayakumar ◽  
J. T. Winowlin Jappes ◽  
T. P. D. Rajan
Keyword(s):  
Volume Fraction ◽  
Cutting Speed ◽  
Microscopy Study ◽  
Stir Casting ◽  
Experimental Result ◽  
Drilling Process ◽  
Machining Parameters ◽  
Matrix Composites ◽  
Casting Technique ◽  
The Matrix

This study reveals the multi objective optimization of machining parameters in drilling of SiC reinforced with aluminium metal matrix composites through grey relational analysis. The composite is prepared with varying volume fraction of the reinforcement by liquid metal stir casting technique. Uniform distribution of SiC particle in the matrix is witnessed through microscopy study and observed that the hardness and strength on different composite. The drilling experiments were performed with coated carbide tool with different point angle such as 90o, 120o and 140o. Cutting speed, feed, point angle and volume fraction are considered as input parameters and the performance characteristics such as surface roughness and thrust force are observed as output response in this study. The significant contributions of these factors are determined using Analysis of Variance (ANOVA). The optimized process parameters have been validated by the confirmation test. The experimental result shows that point angle influences more on output performance followed by feed and cutting speed.

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.

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