scholarly journals Influence of the Sr and Mg Alloying Additions on the Bonding Between Matrix and Reinforcing Particles in the AlSi7Mg/SiC-Cg Hybrid Composite

2016 ◽  
Vol 61 (2) ◽  
pp. 651-656 ◽  
Author(s):  
A. J. Dolata ◽  
M. Dyzia ◽  
S. Boczkal
Keyword(s):  
Phase Composition ◽  
Hybrid Composites ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Casting Method ◽  
Proper Selection ◽  
Alloying Additions ◽  
Reinforcing Particles ◽  
Mould Casting ◽  
Selection Of

Abstract The aim of the work was to perform adequate selection of the phase composition of the composite designated for permanent - mould casting air compressor pistons. The hybrid composites based on AlSi7Mg matrix alloy reinforced with mixture of silicon carbide (SiC) and glassy carbon (Cg) particles were fabricated by the stir casting method. It has been shown that the proper selection of chemical composition of matrix alloy and its modification by used magnesium and strontium additions gives possibility to obtain both the advantageous casting properties of composite suspensions as well as good bonding between particles reinforcements and matrix.

scholarly journals Cast Hybrid Composites Designated for Air Compressor Pistons

2016 ◽  
Vol 61 (2) ◽  
pp. 705-708 ◽  
Author(s):  
A. J. Dolata ◽  
M. Dyzia ◽  
L. Jaworska ◽  
P. Putyra
Keyword(s):  
Wear Resistance ◽  
Composite Material ◽  
Phase Composition ◽  
Hybrid Composites ◽  
Selection Criterion ◽  
Stir Casting ◽  
Additional Parameter ◽  
Casting Method ◽  
Air Compressor ◽  
Component Selection

Abstract The main purpose of the investigations was to develop the phase composition of the composite assuming that the component selection criterion will be the formability of piston work surfaces during the machining. Wear resistance under the friction conditions was assumed as the additional parameter for the assessment of composite material. In the study were used AlSi7Mg/SiC+Cg and AlSi7Mg/SiC+GR hybrid composites prepared by the stir casting method.

Fabrication and Characterization of A356-Basalt Ash-Fly Ash Composites Processed by Stir Casting Method

2017 ◽  
Vol 25 (3) ◽  
pp. 209-214 ◽  
Author(s):  
G. Venkatachalam ◽  
A. Kumaravel
Keyword(s):  
Fly Ash ◽  
Impact Strength ◽  
Hybrid Composites ◽  
Cost Effective ◽  
Weight Fraction ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Method ◽  
The Matrix

This paper presents the characterization of A356 composite reinforced with fly ash and basalt ash produced by stir casting method. Aluminium metal matrix composites (AMC) are used in wide variety of applications such as structural, aerospace, marine, automotive etc. Stir casting is cost effective manufacturing process and it is useful to enhance the attractive properties of AMCs. Three sets of hybrid AMC are prepared by varying the weight fraction of the reinforcements (3% basalt + 7% fly ash, 5% basalt + 5% fly, 7% basalt + 3% fly ash). The effect of reinforcements on the mechanical properties of the hybrid composites such as hardness, tensile, compressive and impact strength were studied. The obtained results reveal that tensile, compressive and impact strength was increased when weight fraction of fly ash increased, whereas the hardness increases when weight fraction of the basalt ash increased. Microscopic study reveals the dispersion of the reinforcements in the matrix.

scholarly journals Metal to Metal Worn Surface of AA6061 Hybrid Composites Casted by Stir Casting Method

2014 ◽  
Vol 97 ◽  
pp. 703-712 ◽  
Author(s):  
K. Umanath ◽  
S.T. Selvamani ◽  
K. PalanikumarK ◽  
D. Niranjanavarma
Keyword(s):  
Hybrid Composites ◽  
Stir Casting ◽  
Casting Method ◽  
Worn Surface

Machining behavior of AA6351–SiC–B4C hybrid composites fabricated by stir casting method

2015 ◽  
Vol 34 (5) ◽  
pp. 586-592 ◽  
Author(s):  
S. Thirumalai Kumaran ◽  
M. Uthayakumar ◽  
Adam Slota ◽  
S. Aravindan ◽  
Jerzy Zajac
Keyword(s):  
Hybrid Composites ◽  
Stir Casting ◽  
Casting Method

Metallurgical and Mechanical Characterization of Al 6082-B4C/Si3N4 Hybrid Composite Manufactured by Combined Ball Milling and Stir Casting

2014 ◽  
Vol 592-594 ◽  
pp. 484-488 ◽  
Author(s):  
Pardeep Sharma ◽  
Dinesh Khanduja ◽  
Satpal Sharma
Keyword(s):  
Ball Milling ◽  
Mechanical Characterization ◽  
Hybrid Composites ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Method ◽  
Percentage Elongation ◽  
Silicon Nitride Powder ◽  
The Cost

Aluminium matrix composites (AMCs) having more than one reinforcement (hybrid AMCs) found enlarged use due to better strength, high thermal stability and wear resistance properties and can be a substitute for single reinforced AMCs .The effect of varying ball milled (BM) B4C/Si3N4 particles on the microstructure of as cast AA6082 and mechanical properties of AA6082 alloy hybrid composites produced by combined ball milling and conventional stir casting method have been reported. The combined reinforcement of BM B4C/Si3N4 particles were varied from 0-9 % in a step of 3. The wettability of B4C/Si3N4 into the aluminium melt has been increased by ball milling the boron carbide with silicon nitride powder, so that combined reinforcement of B4C/Si3N4 neither float nor sink in the aluminium melt. The investigated result showed that addition of combined reinforcement of BM B4C/Si3N4 increased Hardness and Ultimate tensile strength at the cost of reduction in percentage elongation.

Mechanical and Tribological Properties of A7050 Hybrid Composite Reinforced with Nano Al2O3/Micro ZrO2 Particles by Stir Casting Method

2019 ◽  
Vol 969 ◽  
pp. 576-581
Author(s):  
K. Sekar ◽  
Rahul Singh
Keyword(s):  
Hybrid Composites ◽  
Base Alloy ◽  
Charpy Impact ◽  
Stir Casting ◽  
Ceramic Particle ◽  
Wear Loss ◽  
Casting Method ◽  
Mechanical And Tribological Properties ◽  
New Generation ◽  
Charpy Impact Strength

The composite plays an important role in the new generation of engineering material with better tribological and mechanical properties. In this paper, the hybrid composites of A7050/Al2O3/ZrO2 with different wt. % of reinforcement materials (0.5, 1, 1.5wt. % ZrO2, and 1wt. % Al2O3 constant for all composites) were fabricated by stir casting method. From the results, it was observed that the good texture in microstructure without defect with an addition of constant 1wt% Al2O3 and varying 0.5, 1and 1.5 wt% ZrO2. The Hardness of hybrid composites is increased by 27% with addition of 1wt % of Al2O3 and 1.5 wt% ZrO2 compare to base alloy. Charpy impact strength decreased with the addition of Al2O3 and ZrO2 ceramic particle in all the composites. From the dry wear studies, the composite with 1wt% Al2O3 and 1wt% ZrO2 was observed with minimum wear loss and low coefficient of friction.

Study on mechanical properties of Al7050 alloy hybrid composites by stir casting method

2021 ◽  
Author(s):  
T.G. Gangadhar ◽  
D.P. Girish ◽  
J. Satheesh ◽  
A.C. Prapul Chandra ◽  
Vishal
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Stir Casting ◽  
Casting Method

scholarly journals Thermal Conductivity & Thermal Expansion Behaviour of Hot Extruded Hybrid Composites of Al6061/Sic/GR

2019 ◽  
Vol 8 (4) ◽  
pp. 2942-2945
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Hybrid Composites ◽  
Hot Extrusion ◽  
Stir Casting ◽  
Extrusion Ratio ◽  
Casting Method ◽  
Thermal Expansion Behaviour ◽  
Expansion Behaviour

In This Proposed Work Specimens Prepared By Stir Casting Method For Different Combinations Of Reinforcement’s Sic , Gr And Al6061 As Matrix, Further Subjected To Hot Extrusion At Ratios Of 2:1,3:1 & 4:I Temperatures Of 450,500 &5500c & Machined To ASTME831 And These Specimens Were Tested For Thermal Conductivity And Co-Efficient Of Thermal Expansion, Least Of All The Above Ratios And Temperatures Were Solutionised And Aged And The Process Repeated It Was Found That At Extrusion Ratio Of 3:1 With A Combination Of Al6061/4%Sic/2%Gr Both Thermal Conductivity & Thermal Expansion Was Found To Be Improved Compared To Conventional Aluminium.

Mechanical Properties of Nano SiC-Reinforced Aluminum A356 Fabricated by Stir Casting Method

2018 ◽  
Vol 929 ◽  
pp. 86-92
Author(s):  
Donanta Dhaneswara ◽  
Luthfi Noviardi Andani ◽  
Nofrijon Sofyan ◽  
Anne Zulfia Syahrial
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Optical Microscope ◽  
Wetting Agent ◽  
Wear Testing ◽  
Casting Method ◽  
Microstructural Observation

Nano SiC-reinforced aluminumA356 (A356/SiC) has been successfully fabricated using stir casting method. The specimen was fabricated by adding various Nano SiC concentrations, i.e. 0, 0.10, 0.15, 0.20, 0.25, and 0.30 wt.%, at fix 1 wt.% magnesium into aluminum A356 melt. After stirring at certain time, the mixture was poured into the mold that has been preheated at 350oC for 5 minutes. The mechanical properties were characterized using tensile, hardness, and wear testing, where as the microstructural observation was performed using an optical microscope. The results show that the mechanical properties were optimum at 0.25 wt.% Nano SiC with a strength of 175.57 MPa (21.87%), toughness of 0.0287 Joules/mm3(14.8%), hardness of 56.54 HBN (50%), and wear resistance of 1.75 x 10-5 mm3/mm (21.13%). These results indicate that the fabrication approach was successful in producing cast MMCs samples and the use of Nano SiC and Magnesium as a wetting agent with continuous stirring were found to promote the wettability of SiC and A356 matrix alloy and thus result in reasonable mechanical properties of the composite.

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