scholarly journals Effect of 6 Wt.% Particle (B4C + SiC) Reinforcement on Mechanical Properties of AA6061 Aluminum Hybrid MMC

Silicon ◽  
2021 ◽  
Author(s):  
Divakar Bommana ◽  
T. Rajesh Kumar Dora ◽  
N. Pallavi Senapati ◽  
A. Sunny Kumar
Keyword(s):  
Mechanical Properties ◽  
Sic Reinforcement

scholarly journals Improvement of mechanical properties of HfB2-based composites by incorporating in situ SiC reinforcement through pressureless sintering

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. Ghadami ◽  
E. Taheri-Nassaj ◽  
H. R. Baharvandi ◽  
F. Ghadami
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Relative Density ◽  
Pressureless Sintering ◽  
Sintering Process ◽  
Vacuum Atmosphere ◽  
Sic Reinforcement ◽  
Microstructural Studies ◽  
Composite Samples

AbstractHfB2, Si, and activated carbon powders were selected to fabricate 0–30 vol% SiC reinforced HfB2-based composite. Pressureless sintering process was performed at 2050 °C for 4 h under a vacuum atmosphere. Microstructural studies revealed that in situ SiC reinforcement was formed and distributed in the composite according to the following reaction: Si + C = SiC. A maximum relative density of 98% was measured for the 20 vol% SiC containing HfB2 composite. Mechanical investigations showed that the hardness and the fracture toughness of these composites were increased and reached up to 21.2 GPa for HfB2-30 vol% SiC and 4.9 MPa.m1/2 for HfB2-20 vol% SiC, respectively. Results showed that alpha-SiC reinforcements were created jagged, irregular, and elongated in shape which were in situ formed between HfB2 grains and filled the porosities. Formation of alpha-SiC contributed to improving the relative density and mechanical properties of the composite samples. By increasing SiC content, an enhanced trend of thermal conductivity was observed as well as a reduced trend for electrical conductivity.

Mechanical Properties of Stirred SiC Reinforced Aluminium Alloy: Stir Casting with Different Composition of SiC, Blade Angle and Stirring Speed

2012 ◽  
Vol 622-623 ◽  
pp. 1335-1339 ◽  
Author(s):  
Azrol Jailani ◽  
Siti Mariam Tajuddin
Keyword(s):  
Mechanical Properties ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Particle Distribution ◽  
Mechanical Test ◽  
Metallographic Analysis ◽  
Matrix Composites ◽  
Blade Angle ◽  
Sic Reinforcement

Discontinuously reinforced cast metal-matrix composites are increasingly attracting the attention of aerospace, automotive and consumer goods industries. In this study, SiC particle reinforced aluminium alloy is selected to produce metal matrix composites (MMC) using different of parameters blade angle and stirring speed and composition of SiC reinforcement. Mechanical test, metallographic analysis and fracture analysis will be conducted to investigate mechanical properties of material and to observe particle distribution of SiC reinforcement and fracture properties respectively with varies angles and stirring speed of impellers and different composition of SiC reinforcement. Metallographic analysis on composition records at low speed, there exist a particle collection and gas existence on the specimen. At blade angles of 300, increasing on stirring speed and composition of SiC reinforcement may result better of particle distribution. For mechanical test, different composition of SiC reinforcement, blade angle and stirring speed will be affecting a mechanical property of material. The result of the experiment showed at blade angle 300, stirring speed 100rpm and 10% composition of SiC reinforcement give better result of hardness, ultimate strength, energy absorption, microstructure and fracture of composite. For this study, it proved that at the lower blade angle and the increment on stirring speed and composition of SiC reinforcement give a better result on particle distribution of SiC reinforcement, fracture and mechanical properties for A1-MMC.

Development of High Performance Mg/SiC Composites Containing Nano-Size SiC Using Microwave Assisted Rapid Sintering

Aerospace ◽  
2005 ◽  
Author(s):  
W. L. E. Wong ◽  
M. Gupta
Keyword(s):  
Mechanical Properties ◽  
Coefficient Of Thermal Expansion ◽  
Physical And Mechanical Properties ◽  
Microstructural Characterization ◽  
Microwave Assisted ◽  
The Matrix ◽  
Rapid Sintering ◽  
Sic Particulates ◽  
Sic Reinforcement ◽  
Nano Size

Magnesium composites containing nano-size silicon carbide (SiC) particulates were synthesized using powder metallurgy technique coupled with a novel microwave assisted rapid sintering. The sintered specimens were hot extruded and characterized in terms of microstructural, physical and mechanical properties. Microstructural characterization revealed minimal porosity and the presence of a continuous network of nano-size SiC particulates decorating the particle boundaries of the metal matrix. Thermal mechanical analysis revealed a marginal reduction in the average coefficient of thermal expansion (CTE) values of the matrix with the addition of nano-size SiC reinforcement. Mechanical characterization revealed that the addition of nano-size SiC particulates lead to an increase in microhardness, 0.2% yield strength (YS), ultimate tensile strength (UTS) and ductility of the matrix. Particular emphasis was placed to correlate the effects of nano-size SiC reinforcement on the microstructural, physical and mechanical properties of monolithic magnesium.

Effect of SiC-Reinforcement and Equal-Channel Angular Pressing on Microstructure and Mechanical Properties of AA2017

2012 ◽  
Vol 14 (6) ◽  
pp. 388-393 ◽  
Author(s):  
Swetlana Wagner ◽  
Steve Siebeck ◽  
Matthias Hockauf ◽  
Daisy Nestler ◽  
Harry Podlesak ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Equal Channel Angular Pressing ◽  
Angular Pressing ◽  
Microstructure And Mechanical Properties ◽  
Sic Reinforcement

Effect of 6 wt.% Particle (B4C+SiC) Reinforcement on Mechanical Properties of AA6061 Aluminum Hybrid MMC

2021 ◽  
Author(s):  
Divakar Bommana ◽  
T RAJESH KUMAR DORA ◽  
Pallavi Senapati N ◽  
Sunny Kumar Annum
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Earth Metal ◽  
Hardness Measurement ◽  
Synthesis Process ◽  
Uniaxial Tensile ◽  
Binary Eutectic ◽  
Loading Tests ◽  
Hybrid Metal Matrix Composite ◽  
Sic Reinforcement

Abstract Aluminum based hybrid metal matrix composite with more than two particle reinforcement is very much popular for heavy duty application. In the present study, mechanical properties of AA6061 based hybrid composite synthesized using liquid metallurgy route with 6 wt. % total reinforcement (B 4 C+SiC) with different proportions of B 4 C wt. % and SiC wt. % were investigated. Hardness measurement and uniaxial loading techniques were used to characterize the mechanical properties of the as-cast hybrid composites. The improvement in mechanical properties, such as Vickers hardness value, UTS, yield strength and elongation were tried to explain using various hypothesis proposed by previous studies. The role of clustering theory and effect of binary eutectic Mg 2 Si phase have played a key role in defining the mechanical properties of the hybrid composites. Addition of Alkaline Earth Metal (Mg) during the synthesis process have led to the exploration of some interesting results from the uniaxial tensile loading tests.

Design and Processing of FGCM Materials for Applications Subjected to Intensive Abrasive Wear

2017 ◽  
Vol 750 ◽  
pp. 137-141
Author(s):  
Ion Badoi ◽  
Dan Mihai Constantinescu ◽  
Daniel Vlasceanu
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Physical And Mechanical Properties ◽  
Functionally Graded ◽  
Cold Extrusion ◽  
Technological Parameters ◽  
Wear Properties ◽  
Graded Materials ◽  
Low Alloyed Steel ◽  
Sic Reinforcement

The present work shows the design criteria of FGCM, respectively selection criteria of PM (Powder Metallurgy) matrix, and use of reinforcement particles in correlation with the mechanical stresses resulting in moulds and punches used for steel cold extrusion, powder compaction, sheet metal stamping and series production of parts processed with these tools. Therefore, sintered and repressed state are analysed, and the microstructural and mechanical properties of steel powders used for matrices development, grade High Speed Steels (HSS), AISI M2 and AISI M4, and low alloyed steel powders Ancorsteel 2000 and Ancorsteel 4600 V are defined. Also there are analysed the physical and mechanical properties of the reinforcement particles TiC, WC, Al2O3, B4C, SiC, etc. Are presented the manufacturing methods, the technological parameters for development of functionally graded materials in vertical and horizontal plans, compacting to 500-600 MPa,, sintering temperature to 1050 °C for SiC reinforcement and 1100-1150 °C for matrix reinforced with Al2O3 , repressing to 600 MPa/1100 °C of sintered preforms, heat treatment and wear properties of FGCM materials as Ancorsteel 2000 and Ancorsteel 4600 reinforced with Al2O3 and SiC particles

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