scholarly journals Evaluation of Copper-Based Alloy (C93200) Composites Reinforced with Marble Dust Developed by Stir Casting under Vacuum Environment

Materials ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1574 ◽  
Author(s):  
Santosh Kumar Rajak ◽  
Amit Aherwar ◽  
Deepak Rajendra Unune ◽  
Mozammel Mia ◽  
Catalin I. Pruncu
Keyword(s):  
Selection Index ◽  
Surface Characteristics ◽  
Stir Casting ◽  
Dust Particles ◽  
Wear Properties ◽  
Weight Percentage ◽  
Suitable Material ◽  
Hardness Tester ◽  
Marble Dust ◽  
Copper Based Alloy

Copper-based alloy (C93200) composites reinforced with a different weight percentage of marble dust particles (1.5, 3, 4.5, and 6 wt.%) were developed by stir casting method under vacuum environment. By using this type of reinforcement, it was possible to detect a suitable material for bearing applications. The manufactured material was characterized for its mechanical properties using a micro-hardness tester. A universal INSTRON-5967 machine was used to detect the yield and tensile strength. Further the hardness features were measured using a Walter Uhl model machine, whereby the wear characteristics were simulated under the pin-on-disc tribometer under different working conditions in ambient temperature (23 °C). Next, the preference selection index (PSI) technique that considers multi-criteria decision-making was proposed to validate which material was the best candidate. For the selection of material criteria, some specific material intrinsic properties—such as, density, void fraction, hardness resistance along with tensile, compressive, and flexural strength—were proposed and the surface characteristics linked to friction coefficients along wear properties. It was found that the novel composite material containing 4.5 wt.% of marble dust provided the best combination of properties and is a suitable candidate material for bearing applications.

scholarly journals Effect of bagasse ash reinforcement on Al356 matrix composite manufactured by two stage stir casting process

2018 ◽  
Vol 8 (04) ◽  
Author(s):  
Vaibhav Dardare ◽  
S. G. Kulkarni
Keyword(s):  
Tensile Strength ◽  
Compression Strength ◽  
Testing Machine ◽  
Casting Process ◽  
Stir Casting ◽  
Experimental Result ◽  
Compression Tests ◽  
Two Stage ◽  
Weight Percentage ◽  
Hardness Tester

In the present work Al356-Bagasse ash composites are produced by two stage stir casting method and subsequently various properties like compression strength, tensile strength, hardness of Al356 are studied. Al356 alloy is reinforced with bagasse ash particles of the various weight percentage (2,4 and 6% wt.). An experimental result shows uniform distribution of the bagasse ash particles in the matrix of the Al356 leading to increase in the mechanical strength of the composites. The tensile and compression tests are carried out with the help of Universal Testing Machine and it was observed that ultimate tensile strength, yield strength and compression strength increases with increase weight percentage of bagasse ash in the composite, while percentage elongation decreases. The hardness of the composites are measured by brinell hardness tester and it was observed that hardness of the composite material increases with increase in weight percentage of bagasse ash particles.

scholarly journals An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

2019 ◽  
Vol 13 (1) ◽  
pp. 4575-4595
Author(s):  
Nagaraja . ◽  
Raviraja Adhikari ◽  
T. Yasir
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Flank Wear ◽  
Cutting Speed ◽  
Surface Characteristics ◽  
Stir Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
The Matrix

The present study deals with tapping of Al6061/SiC metal matrix composite. Stir casting technique was used for the fabrication of composite. Castings were produced by varying weight percentages of SiC (5%, 7.5% and 10%) of 23μm size in Al6061. The tapping experiments were conducted for the machinability study of Al6061/SiC metal matrix composite using M8 x 1.25 HSS machine taps. The tapping operation was performed under dry condition with different cutting speeds. Torque required for tapping was measured using piezoelectric based 4-component drill tool dynamometer. Surface morphology and profile of thread surfaces were analysed using Scanning Electron Microscope (SEM) and metallurgical microscope. Estimation of progressive flank wear of machine taps was undertaken using profile projector. The performance of HSS machine tap was evaluated in terms of tapping torque, tool flank wear, and surface characteristics of thread surfaces. The flank wear of uncoated HSS machine tap increased with the increase in weight percentage of SiC in Al/SiC composite for a particular cutting speed. Further, when the matrix materials were reinforced by the same kind and the same weight percentage of SiC particles, the flank wear of the tool was found to increase with cutting speed. In addition, the damage caused to thread profiles increased with the increase in cutting speed and weight percentage of SiC.

Wear Behavior of B4C reinforced Al6063 matrix composites electrode fabricated by stir casting method

2020 ◽  
Author(s):  
MATHALAI SUNDARAM C ◽  
Radha Krishnan B ◽  
HARIKISHORE S ◽  
V. Vijayan
Keyword(s):  
Surface Roughness ◽  
Electrical Discharge Machining ◽  
Wear Behavior ◽  
Casting Process ◽  
Surface Characteristics ◽  
Stir Casting ◽  
Composite Electrodes ◽  
Die Steel ◽  
Hardness Tester ◽  
Good Surface

The aim of the study is to predict the surface topological characteristics of Al-B4C composite electrodes and the OHNS Die steel in the Electrical Discharge Machining (EDM) Process. The surface characteristics of Composite electrodes are evaluated by using Scanning Electron Microscopy (SEM) and EDAX Analytical Method. Surface roughness and hardness of the OHNS die steel was measured by the Stylus probe and Brinnel hardness. The composite electrodes prepared by the Aluminium 6063 and B4C materials. Both elements are mixed at molten state in the stir casting process at different compositions. The chemical composition properties of the Composite electrode is analyzed by the SEM and EDAX testing. The surface Roughness of the OHNS steel measured by the Brinell hardness tester. Based on the SEM and EDAX results, the 92% Al 8% B4C was producing the good surface roughness in OHNS die steel.

scholarly journals Manufacture of silicon carbide reinforced aluminium 6061 metal matrix composites for enhanced sliding wear properties

2019 ◽  
Vol 6 ◽  
pp. 24
Author(s):  
Avinash Bhat ◽  
Ganesh Kakandikar
Keyword(s):  
Tribological Properties ◽  
Stir Casting ◽  
Experimental Investigations ◽  
Matrix Composites ◽  
The Novel ◽  
Wear Properties ◽  
Load Range ◽  
Mechanical And Tribological Properties ◽  
Hardness Tester ◽  
Pin On Disc

Composite materials have the capability of being customised to provide specific mechanical and tribological properties. This paper presents the manufacture of a novel composite of Al6061 with 5% SiC (50 μm size) by the stir casting method. Experimental investigations of mechanical and tribological properties of SiC reinforced Al6061 are discussed. Investigations with a Rockwell hardness tester revealed that this composite had enhanced hardness. Wear characteristics were investigated for Al6061 and the novel composite Al6061 + SiC with a Pin on disc tribometer for a load range of 5N-200N and RPM varying from 200 to 1500. The effect of crucial parameters such as load and RPM on the wear of the novel composite were presented with sensitivity analysis. The results obtained are encouraging, showing the novel composite having a lower wear rate.

Studies on mechanical property and wear behaviour of AA7075 hybrid composites prepared by a conventional casting method

2021 ◽  
pp. 095440892110349
Author(s):  
V Vignesh Kumar ◽  
K Raja ◽  
T Ramkumar ◽  
M Selvakumar ◽  
TS Senthil Kumar
Keyword(s):  
Boron Nitride ◽  
Boron Carbide ◽  
Hybrid Composites ◽  
Stir Casting ◽  
Wear Behaviour ◽  
Tensile Behaviour ◽  
Wear Properties ◽  
Casting Technique ◽  
Reciprocating Wear ◽  
Sliding Distance

The research article addresses the reciprocating wear behaviour of hybrid AA7075 reinforced with boron carbide and boron nitride through a stir-casting technique. The experiment involved varying wt.% of the secondary particle boron carbide (3, 6 and 9) while boron nitride (3) was kept as constant. The hybrid composites were characterised using scanning electron microscopy coupled with energy dispersive spectroscopy. The hardness and tensile behaviour of the hybrid composites were evaluated. Reciprocating wear behaviour of the hybrid composites were examined using a tribometer by varying the wear parameters such as load and sliding distance. The results revealed that AA7075/6boron carbide/3boron nitride had better hardness, tensile and wear properties. The surface morphology of the wear samples was analysed using SEM.

scholarly journals Effect of Boron Carbide Addition on Wear Resistance of Aluminum Matrix Composites Fabricated by Stir Casting and Hot Rolling Processes

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 989
Author(s):  
Donghyun Lee ◽  
Junghwan Kim ◽  
Sang-Kwan Lee ◽  
Yangdo Kim ◽  
Sang-Bok Lee ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Boron Carbide ◽  
Hot Rolling ◽  
Rolling Direction ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Wear Depth ◽  
Wear Properties ◽  
B4c Particles

In this study, to evaluate the effect of boron carbide (B4C) addition on the wear performance of aluminum (Al), Al6061 and 5, 10, and 20 vol.% B4C/Al6061 composites were manufactured using the stir casting and hot rolling processes. B4C particles were randomly dispersed during the stir casting process; then, B4C particles were arranged in the rolling direction using a hot rolling process to further improve the B4C dispersion and wear resistance of the composites. Furthermore, a continuous interfacial layer between B4C and the Al6061 matrix was generated by diffusion of titanium (Ti) and chromium (Cr) atoms contained in the Al6061 alloy. Wear depth and width of the composites decreased with increasing B4C content. Furthermore, with B4C addition, coefficient of friction (COF) improved as compared with that of Al6061. The results indicate that interface-controlled, well-aligned B4C particles in the friction direction can effectively increase the wear properties of Al alloys and improve their hardness.

Contriving and Assessment of Magnesium Alloy Composites Augmented with Boron Carbide VIA Liquid Metallurgy Route

2022 ◽  
Vol 1048 ◽  
pp. 3-8
Author(s):  
J. Allen Jeffrey ◽  
S. Suresh Kumar ◽  
V. Anusha Roseline ◽  
A. Lazar Mary ◽  
D. Santhosh
Keyword(s):  
Boron Carbide ◽  
Testing Machine ◽  
High Strength ◽  
Stir Casting ◽  
Vital Role ◽  
Magnesium Metal ◽  
Hardness Tester ◽  
Universal Testing ◽  
Modern Engineering

In modern engineering low-density composites plays a vital role of which magnesium alloys are very effective due to its high strength with better corrosion resistance and neat cast ability. In this work a micron sized Boron carbide ceramic (B4C) of about 100 microns is diffused as a reinforcement with AZ91 for preparing a magnesium metal matrix composite (MMMC) through stir casting route. A modified pit furnace setup is used for doing stir casting with varying volume fractions of 0％ and 3% of boron carbide for doing the composites. Furthermore mechanical and metallurgical properties like Tensile test is made through universal testing machine, Micro-hardness through Vickers hardness tester and Micro structure through Optical Microscopy is done for investigation.

MICROSTRUCTURE AND PROPERTIES OF SiC PARTICLES REINFORCED COPPER BASED ALLOY COMPOSITE

2013 ◽  
Vol 27 (19) ◽  
pp. 1341025 ◽  
Author(s):  
YU HONG ◽  
XIAOLI CHEN ◽  
WENFANG WANG ◽  
YUCHENG WU
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Relative Density ◽  
Volume Fraction ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Wear Properties ◽  
Sic Particles ◽  
Copper Based Alloy

Copper-matrix composites reinforced with SiC particles are prepared by mechanical alloying. The microstructure characteristics, relative density, hardness, tensile strength, electrical conductivity, thermal conductivity and wear properties of the composites are investigated in this paper. The results indicate that the relative density, macro-hardness and mechanical properties of composites are improved by modifying the surface of SiC particles with Cu and Ni . The electrical conductivity and thermal conductivity of composites, however, are not obviously improved. For a given volume fraction of SiC , the Cu / SiC ( Ni ) has higher mechanical properties than Cu / SiC ( Cu ). The wear resistance of the composites are improved by the addition of SiC . The composites with optimized interface have lower wear rate.

scholarly journals Evaluation of Mechanical Properties of AA7075 /Al2O3/Mg Hybrid Composites

2019 ◽  
Vol 8 (6) ◽  
pp. 5044-5046 ◽  
Keyword(s):  
Mechanical Properties ◽  
Hybrid Composites ◽  
Casting Process ◽  
Stir Casting ◽  
Tensile Behaviour ◽  
Matrix Composites ◽  
Compression Behavior ◽  
Weight Percentage ◽  
Fea Simulation ◽  
Alloy Metal

The present work was planned to evaluate the mechanical properties of alumina reinforced aluminium alloy such hardness and compression behavior of al2o3 /aa7075 alloy metal matrix composites. Both, experimental and finite element analyses were carried out to establish tensile behaviour of the composites with different weight percentage of al2o3 fabricated by the stir casting process. The results concluded that addition of alumina to the aa7075 improves the mechanical properties of the composite. Further the results of FEA simulation of the composites are close to the actual results which shows that cost and time can be reduced if FEA is performed

scholarly journals Development of High Performance (Mechanical and Wear Properties) of AA 6061-Hybrid Nano Composites Via Liquid Metallurgy Route

2019 ◽  
Vol 22 (2) ◽  
pp. 143-150
Author(s):  
Hussain J. M. Al-Alkawi ◽  
Abduljabbar Owaid Hanfesh ◽  
Saja Mohammed Noori Mohammed Rauof
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Wear Rate ◽  
Yield Strength ◽  
Base Metal ◽  
Young Modulus ◽  
Nano Particles ◽  
Wear Properties ◽  
Constant Weight ◽  
Weight Percentage

This research is devoted to study the influence of different weight percent concerning to the additions of Ti and Cu on mechanical and tribological properties of AA6061. The composite materials consist of different weight percentage of Ti (0.2, 0.4, and 0.6) wt% and constant weight percentage of Cu (0.2) wt% which were fabricated by liquid metallurgy route technique. Microstructural characterization and phases have been examined by using SEM (scanning electron microscopic).SEM examination showed uniform distribution of nano Ti and Cu in AA6061. The consequences of mechanical tests demonstrated clear enhancement in mechanical properties, such as ultimate tensile strength, yield strength, young modulus, ductility% and hardness at additive percentage of 0.4% Ti+0.2%Cu nano particles incorporated into molten AA6061. Percentage of enhancement ultimate tensile strength is about 73.3%, yield strength about 82.7%, young modulus is about 21.2%, the  Vickers hardness about 42.6% and the decreasing in ductility was about 25.2% compared with the metal matrix (AA6061). The wear rate test was performed by using pin on disc rig for both hybrid nano composite and base metal (AA6061) under various loads (10,15and 20) N with sliding speed (1.282) m/sec at a (10) min’s time. The results showed a decrease in wear rate at 0.4%Ti+0.2%Cu compared with the base metal (AA6061). Improvement percentage of wear rate is about 105% at 20 N load.

Sign in / Sign up

Export Citation Format

Share Document