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.

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.

scholarly journals Microstructure and Mechanical Properties of Al-Mg-Si Hybrid Composites Reinforced with SiC/TiO2

2021 ◽  
Vol 58 (1) ◽  
pp. 3076-3088
Author(s):  
Dr. Israa A. Al. Kadir Hanan K. Azeez
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Base Alloy ◽  
Casting Process ◽  
Stir Casting ◽  
Optical Microscope ◽  
X Ray Diffraction ◽  
X Ray ◽  
Particulate Reinforcement ◽  
The Matrix

The aims of thiswork is to investigate the effect of adding different weight percents of TiO2 and SiC 1.5:0,3:0, 4.5:0, 0:1.5, 0:3, 0:4.5, 1.5:1.5, 3:3, 4.5:4.5 particulate reinforcement on the mechanical properties andmicrostructure properties of base alloy Al-Mg-Si.By stir casting process, base alloy and hybrid composites were developed.  By using stiffness and tensile measures, the mechanistic properties of the basic alloy and hybrid composites were calculated.The topography of fracture surfaces was inspected using the scanning electron microscope (ESM) and energy dispersive spectroscopy ( EDS).The findings shows, with a weight rise of 4.5% by the TIO2 / SIC up to 4.5%, Improved absolute tensile power, strength of output and hardness. In contrast, the elongationrate is decreased, The optical microscope inspection shows that the particles in the matrix without any valves are distributed evenly. The X-Ray diffraction manifested the presence of different phases and intermetallic compounds Mg5Si6, Mg2Si, Al2O3, Mg6Si3.3., Al3Mg2 and Al3Ti.

scholarly journals Optimizing The Addition of TiB to Improve Mechanical Properties of the ADC 12/SiC Composite Through Stir Casting Process

2019 ◽  
Vol 130 ◽  
pp. 01005
Author(s):  
Cindy Retno Putri ◽  
Anne Zulfia Syahrial ◽  
Salahuddin Yunus ◽  
Budi Wahyu Utomo
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Wear Resistance ◽  
Aluminum Alloy ◽  
Casting Process ◽  
Stir Casting ◽  
Automotive Application ◽  
Alloying Element ◽  
Brake Shoe ◽  
The Matrix

The goal of this research is to improve the mechanical properties such as strength, hardness and wear resistance for automotive application such as brake shoe and bearings due to high cycle, load and impact during their usage. Therefore, another alloying element or reinforcement addition is necessary. In this work, the composites are made by ADC 12 (Al-Si aluminum alloy) as the matrix and reinforced with micro SiC through stir casting process and TiB is added various from (0.04, 0.06, 0.15, 0.3 and 0.5) wt.% that act as grain refiners and 5 wt.% of Mg is added to improve the wettability of the composites. The addition of TiB improves the mechanical properties because the grain becomes finer and uniform, and the addition of Mg makes the matrix and reinforce have better adhesion. The results obtained that the optimum composition was found by adding 0.15 wt.% of TiB with tensile strength improve from 98 MPa to 136.3 MPa, hardness from 35 to 53 HRB and wear rate reduced from 0.006 2 mm3 s−1 to 0.002 3 mm3 s−1 respectively.

Effect of Silicon Nitride (Si3N4) Addition on the Mechanical and Tribological Performance of Al-Fe-Si Alloy (AA8011)

2020 ◽  
Vol 982 ◽  
pp. 34-38
Author(s):  
Juwon Fayomi ◽  
A.P.I. Popoola ◽  
O.M. Popoola ◽  
O.P. Oladijo
Keyword(s):  
Mechanical Properties ◽  
Vickers Microhardness ◽  
Testing Machine ◽  
Casting Process ◽  
Stir Casting ◽  
Tribological Performance ◽  
Dry Sliding ◽  
Alloy Matrix ◽  
Universal Testing ◽  
Microhardness Tester

This research examines the effect of ceramic particulate of Si3N4 on the hardness, tensile, corrosion, and microstructure of reinforced AA8011 composites. The composites were developed by two steps stir casting process where both the particulates and the alloy matrix were preheated and melted respectively before mixing. 0%, 5%, 10%, 15%, and 20% Si3N4 particulates compositions were varied to fabricate the composites. Vickers microhardness tester was employed to study the hardness, the universal testing machine was used to analyze the ultimate tensile strength, the tribological performances of the developed composites AA8011-Si3N4 were analyzed under dry sliding condition using Universal Tribometer. The results of the experiment clearly revealed the improvement in the mechanical properties of the composites compared to the primary Al-Fe-Si alloy with excellent strength mechanism recorded at 20% reinforcement. Composites with 20% Si3N4 was found to have a better wear resistance hence, lowest wear rate.

Synthesis and Characterization of Al 7075 Alloy Reinforced with Silicon Carbide and Fly Ash

2019 ◽  
Vol 11 (3) ◽  
Author(s):  
G. Sathishkumar ◽  
S.J. Irudayaraja ◽  
S. Sivaganesan ◽  
M. Thuyavan
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Casting Process ◽  
Stir Casting ◽  
Industrial Applications ◽  
Matrix Composites ◽  
Specific Strength ◽  
Al 7075 ◽  
7075 Alloy

Metal matrix composites are of great interest in industrial applications for its light weight with high specific strength, stiffness and heat resistance. The processing of MMCs by stir casting process is an effective way of manufacturing. In this paper the comparison of mechanical properties of Aluminium 7075 as a base metal and varying composition of fly ash by 3 and 6 wt.% SiC and 7% fly ash as reinforcement is carried out. Scanning electron microscope was used to confirm the presence of SiC and fly ash. The composites with 6% SiC was found to have maximum hardness whereas composites of 6% and 5 % fly ash were found to have minimum hardness. The mechanical properties such as wear resistance were studied. From the results, it has been finalized that the addition of 6% SiC was identified to show the least wear rate.

Investigations on Mechanical Behaviour of B4C and MoS2 Reinforced AA2024 Hybrid Composites

2015 ◽  
Vol 15 (4) ◽  
pp. 339-343 ◽  
Author(s):  
Bhargavi Rebba ◽  
N. Ramanaiah
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composite ◽  
Metal Matrix ◽  
Hybrid Composites ◽  
Base Alloy ◽  
Casting Process ◽  
Stir Casting ◽  
Mechanical Tests ◽  
Molybdenum Disulphide ◽  
Matrix Metal

AbstractThe results of an experimental investigation of the mechanical properties of boron carbide (B4C) and molybdenum disulphide (MoS2) reinforced aluminium alloy (AA2024) hybrid composite samples, processed by stir casting process are reported in this paper. Based on the previous studies, it was concluded that for 4% of weight of the B4C powders reinforced in AA2024 metal matrix have better mechanical properties like tensile strength and hardness than the base alloy. Also the 4% of MoS2 reinforced in AA2024 metal matrix exhibited good mechanical properties than the matrix metal. Hence an attempt has been made to further improve the properties of the composite using both B4C and MoS2 as reinforcement particles in the AA2024 matrix. in the present study hybrid composite specimen were developed varying the weight% of B4C and MoS2, viz., 1%+3%, 2%+2%, 3%+1% B4C and MoS2 respectively in the AA2024 matrix. The prepared samples were subjected to a series of mechanical tests like tensile and hardness tests. Further, SEM & XRD analyses were performed on the prepared samples to study the microstructure and to ensure the proper dispersion of the reinforced particles in the metal matrix.

Study of Mechanical Behaviour of Stir Cast Aluminium Based Composite Reinforced with Mechanically Ball Milled TiB2 Nano Particles

2014 ◽  
Vol 984-985 ◽  
pp. 410-415
Author(s):  
E.S. Esakkiraj ◽  
S. Suresh ◽  
N. Shenbaga Vinayaga Moorthi ◽  
M. Krishna Kumar ◽  
S.M. Jenin Ranjith
Keyword(s):  
Mechanical Properties ◽  
Density Ratio ◽  
Casting Process ◽  
Stir Casting ◽  
Milling Process ◽  
General Aviation ◽  
Nano Particles ◽  
Manufacturing Cost ◽  
Matrix Composites ◽  
Micro Particles

Metal matrix composites possess some glamorous properties like light weight, low density ,high strength-to-density ratio, formable to complex shape, lower manufacturing cost and are used more in commercial, industrial, marine, naval based industrial and are extensively used in automobiles and aerospace like empennage, wings, fuselage in fighter aircraft, bomber, transport, general aviation, rotary aircraft etc. Many researches are done on micro structural metals matrix composites and they result shows that composite of micro structural having good mechanical properties. Instead of using micro structural nanoparticles are used for better mechanical properties and better applications in aeronautical field. The present study is an attempt to prepare and analysis of mechanical properties of Aluminium 6061 reinforcement with TiB2nanoparticles using liquid metallurgy. By the use of ball milling process the TiB2micro particles are converted in to nanoparticles and reinforced with Aluminium 6061 in stir casting process. The addition level of reinforcement is being varied from 0-15wt% in step of 4 wt%.Test carried out on the fabricated composite included scanning electron microscopy, XRD, EDAX analysis, and Thermal analysis.

Evaluation of Mechanical Properties of Aluminum Alloy (Al2024) Reinforced with Silicon Carbide (SiC) Metal Matrix Composites

2017 ◽  
Vol 263 ◽  
pp. 184-188 ◽  
Author(s):  
P. Subramanya Reddy ◽  
R. Kesavan ◽  
B. Vijaya Ramnath
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Base Alloy ◽  
Stir Casting ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
Casting Technique ◽  
Sic Particles

The investigation of mechanical properties of silicon carbide (SiC) powders reinforced with aluminum alloy composites are recorded in this paper. SiC powders of approximately 35µm size were added in an aluminum alloy matrix to manufacture the samples of ratios 1, 2, 3 and 4 by weight % using the stir casting technique. The specimens were fabricated and several tests were conducted to evaluate the mechanical properties such as tensile strength, hardness and impact strength and then the values are compared with the base alloy. It has been observed from the results that the hardness, impact energy and tensile strength increases with the increase in % of SiC particles until 2% and drops on further increase in the SiC particles.

scholarly journals Effect of ZrO2 Addition on Microstructure and Mechanical Properties of Al-Zn-Mg Alloy Matrix Composite

2020 ◽  
Vol 38 (12A) ◽  
pp. 1751-1757
Author(s):  
Israa A. Aziz ◽  
Russul S. Bedien
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Matrix Composite ◽  
Base Alloy ◽  
Casting Process ◽  
Optical Microscope ◽  
Industrial Applications ◽  
Unreinforced Alloy ◽  
Alloy Matrix ◽  
Weight Percentage

Aluminum – based metal matrix composite are widely used in industrial   applications compared with conventional and unreinforced alloy. The composite materials usually exhibit a higher strength both at elevated and ambient temperature, as well as wear resistance. The production of composite materials which contain different weight percentage of ZrO2 (0.5, 1.5 and 2.5wt %) by stir casting process. The mechanical properties of the base alloy and composite were evaluated   by using   tensile and hardness tests. The microstructure inspection by optical microscopy, scanning electron microscope and energy dispersive spectroscopy (EDS) were utilized to study the fracture surface topography. The results represent that the hardness, strength of yield and tensile strength increased with increasing the weight % of ZrO2 to 2.5 % while the elongation decreased. The microstructure inspection by optical microscope shows that the dendrites structure and the particles distribution in matrix without any voids. Furthermore, the grain size refining with the weight percentage of weight reinforcement elevated.                         

scholarly journals Synthesis of Al-Fly Ash Composites by Modified Two Step Stir Casting Method

2012 ◽  
Vol 488-489 ◽  
pp. 775-781 ◽  
Author(s):  
P. Shanmughasundaram ◽  
R. Subramanian ◽  
G. Prabhu
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Matrix Material ◽  
Casting Process ◽  
Stir Casting ◽  
Casting Method ◽  
Industrial Preparation ◽  
The Matrix ◽  
Method Analysis ◽  
Properties Of Composites

In the stir casting process, homogeneous dispersion of reinforcing particles within the matrix material is one such major problem, which influences on the properties of composites. In this research, an attempt has been made to study the influence of fly ash wt.% (10 ,15 and 20), ratio of the impeller outer dia to crucible inner dia (0.7,0.5 and 0.3) and processing method (liquid state stirring, two step stirring and modified two step stirring) on the mechanical properties and the distribution of fly ash particles in the Al matrix.Optimum parameters were identified for attaining the maximum mechanical properties such as hardness and tensile strength of composites by the application of Taguchi method, Analysis of Variance (ANOVA) and the results were validated by confirmation test.The present work could provide a guide for the industrial preparation of composites.

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