Effect of SiC Volume Fraction on the Microstructural and Mechanical Properties of Cu/SiC Composite Layer Fabricated by FSP

2011 ◽  
Vol 312-315 ◽  
pp. 500-505 ◽  
Author(s):  
Parviz Asadi ◽  
M.K. Besharati Givi ◽  
Mohsen Barmouz
Keyword(s):  
Electron Microscopy ◽  
Volume Fraction ◽  
Composite Layer ◽  
Traverse Speed ◽  
Friction Stir ◽  
Surface Composite ◽  
Uniform Microstructure ◽  
Surface Composite Layer ◽  
Developed Surface ◽  
Scanning Electron

In this study, friction stir processing (FSP) was applied to fabricate a Cu/SiC surface composite layer by incorporation of 5 µm SiC particles. Effects of the traverse speed and SiC volume fraction on the microstructure, hardness and powder distribution pattern of the developed surface layer were investigated. Optical and scanning electron microscopy (SEM) was employed to carry out the microstructural observations. Results show that increasing the volume fraction causes an intense decrease in the grain size and increase in the hardness of the developed surface. To achieve a uniform distribution of particles and uniform microstructure, the traverse speed should decrease as far as possible.

scholarly journals Double Reinforcement of Al–Fe Intermetallic Composites Fabricated by Friction Stir Processing

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1002
Author(s):  
Chunping Huang ◽  
Yang Xia ◽  
Chun Xia ◽  
Fencheng Liu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Friction Stir Processing ◽  
Volume Fraction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Friction Stir ◽  
Metallurgical Bond ◽  
Aluminum Alloy Surface ◽  
Scanning Electron

A double reinforced layer on an aluminum alloy surface was produced using friction stir processing (FSP) by adding 34CrNiMo6 powder into Al (AA2024) substrate for better wear resistance and gradient transitions. The microstructures of the composites were analyzed using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The phase composition was examined by X-ray diffraction (XRD). The results show that the double reinforced layer of the Al13Fe4 intermetallic compound could be successfully fabricated via FSP. The volume fraction of Al13Fe4 in the double reinforced layer was higher than in the single reinforced layer due to adding 34CrNiMo6 powder and reinforced twice, and the Al13Fe4 particles were dispersed more homogeneously in the double reinforced layer. The interfaces between the double and single reinforced layer had a good metallurgical bond. The microhardness of the double reinforcement layer was significantly increased. Compared with the AA2024 substrate, the microhardness of the double and single reinforced layers increased five- (576 HV) and two-fold (254 HV), respectively.

Effect of Tool Rotational Speed on Microstructure and Microhardness of AA6082/TiC Surface Composites using Friction Stir Processing

2014 ◽  
Vol 592-594 ◽  
pp. 234-239 ◽  
Author(s):  
A. Thangarasu ◽  
N. Murugan ◽  
I. Dinaharan ◽  
S.J. Vijay
Keyword(s):  
Friction Stir Processing ◽  
Rotational Speed ◽  
Traverse Speed ◽  
Tool Rotational Speed ◽  
Friction Stir ◽  
Surface Composite ◽  
Surface Composites ◽  
Homogenous Distribution ◽  
Tool Pin ◽  
Scanning Electron

Friction stir processing (FSP) is as a novel modifying technique to synthesize surface composites. An attempt has been made to synthesis AA6082/TiC surface composite using FSP and to analyze the effect of tool rotational speed on microstructure and microhardness of the same. The tool rotational speed was varied from 800 rpm to 1600 rpm in steps of 400 rpm. The traverse speed, axial force, groove width and tool pin profile were kept constant. Scanning electron microscopy was employed to study the microstructure of the fabricated surface composites. The results indicated that the tool rotational speed significantly influenced the area of the surface composite and distribution of TiC particles. Higher rotational speed provided homogenous distribution of TiC particles while lower rotational speed caused poor distribution of TiC particles in the surface composite. The effect of the tool rotational speed on microhardness is also reported in this paper.

Influence of Nano Reinforcement Volume Percentage on Fabrication of Surface Nanocomposite by FSP

2016 ◽  
Vol 879 ◽  
pp. 1369-1374
Author(s):  
P. Naresh ◽  
Adepu Kumar ◽  
M. Krishna Kishore
Keyword(s):  
Material Flow ◽  
Volume Fraction ◽  
Traverse Speed ◽  
Stir Zone ◽  
Tool Rotational Speed ◽  
Volume Percentage ◽  
Phase Volume Fraction ◽  
Friction Stir ◽  
Surface Composite

This work deals with the effect of volume percentage of nanoreinforcement to fabricate nanosurface composite by Friction Stir Processing (FSP) and also studied the role of tool rotational speed and traverse speed to get the defect free condition to fabricate successful surface composite. The material flow pattern, dispersion of the reinforcement particles in the stir zone was examined. From the phase/volume fraction analysis, it was observed that the nanoAl2O3 particles were well dispersed in the stir zone. The results indicate that the better microstructural, mechanical properties were obtained at 1150rpm /15mm/min condition. A significant improvement in microhardness was exhibited by surface nanocomposite as compared to the as - received aluminum.

Microstructure and Hardness of Surface Composite Layer Fabricated by Evaporative Pattern Casting Technology

2012 ◽  
Vol 538-541 ◽  
pp. 302-305
Author(s):  
Ran Yang Zhang ◽  
Gang Yao Zhao ◽  
Yue Chen
Keyword(s):  
Electron Microscope ◽  
Cast Steel ◽  
Composite Layer ◽  
Steel Matrix ◽  
X Ray ◽  
Surface Composite ◽  
Casting Technology ◽  
Surface Composite Layer ◽  
Scanning Electron ◽  
Evaporative Pattern Casting

Surface composite layer was fabricated on the cast steel matrix using the evaporative pattern casting (EPC) technology. The pre-coating with WC and Cr-Fe particles as raw reinforcements was reacted with matrix and formed the composite layer. Then, the microstructure and hardness of surface composite layer were investigated by Scanning Electron Microscope (SEM), Olympus Microscope (OM), Energy Dispersive X-ray Spectroscopy (EDAX) and Rockwell Apparatus. The results show that the composite layer can be divided into transitive layer and penetrated layer, and the component analysis shows that the microstructure distribution of the penetrated layer is homogeneous.

FABRICATION OF SURFACE COMPOSITE BY FRICTION STIR PROCESSING USING A NOVEL DIRECT PARTICLE INJECTION TOOL

2019 ◽  
Vol 26 (04) ◽  
pp. 1850182
Author(s):  
P. MUTHUKUMAR ◽  
S. JEROME ◽  
R. JOHN FELIX KUMAR ◽  
S. PRAKASH
Keyword(s):  
Friction Stir Processing ◽  
Composite Layer ◽  
Aluminum Matrix ◽  
Homogeneous Distribution ◽  
Particle Injection ◽  
Friction Stir ◽  
Surface Composite ◽  
Surface Composite Layer ◽  
The Matrix ◽  
The Impact

In this work, aluminum/titanium carbide (Al/TiC) surface composite has been fabricated by friction stir processing using a novel modular Direct Particle Injection Tool (DPI–FSP). The tool has a unique feature wherein the TiC particles have been transferred from the tool itself by spring adjusted plunger movement into the matrix. The microstructural observations from optical and scanning electron microscope (SEM)-EDS results revealed the homogeneous distribution of particles in the stirred zone (SZ) and the thickness of the formed surface composite layer (SCL) is approximately 0.34[Formula: see text]mm. X-ray diffraction results confirmed that the particles are reinforced in the aluminum matrix, and no intermetallics have been formed in the composite. The microhardness of composite was increased from 68 to 135[Formula: see text]Hv, and the impact test results showed that the toughness was almost comparable to that of the base metal.

Friction stir processing strategies to develop a surface composite layer on AA6061-T6

2018 ◽  
Vol 33 (10) ◽  
pp. 1133-1140 ◽  
Author(s):  
Carmen María Abreu Fernández ◽  
Roberto Acuña Rey ◽  
María Julia Cristóbal Ortega ◽  
David Verdera ◽  
Carlos Llovo Vidal
Keyword(s):  
Friction Stir Processing ◽  
Composite Layer ◽  
Friction Stir ◽  
Surface Composite ◽  
Processing Strategies ◽  
Surface Composite Layer

Effect of Ceramic Particles on Microstructure and Mechanical Properties of Aluminium Surface Composite Fabricated Using Friction Stir Processing

2015 ◽  
Vol 830-831 ◽  
pp. 440-443 ◽  
Author(s):  
A. Thangarasu ◽  
N. Murugan
Keyword(s):  
Friction Stir Processing ◽  
Processing Speed ◽  
Composite Layer ◽  
Homogeneous Distribution ◽  
Tool Rotational Speed ◽  
Friction Stir ◽  
Surface Composite ◽  
Surface Composites ◽  
Sic Particles ◽  
Surface Composite Layer

Friction stir processing (FSP) is a novel technique used to fabricate surface composites. This investigation is an attempt to made Al/Al2O3 and Al/SiC surface composite using FSP and compare the mechanical and metallurgical properties influenced by the types of reinforcement particles. Two plates were grooved with 0.8 mm in width, 5 mm in depth and 100 mm in length in the middle of the aluminium plate using wire EDM and compacted with Al2O3 and SiC powder. The FSP was carried out automatically on an indigenously built FSW machine at tool rotational speed of 1200 rpm, processing speed of 60 mm/min and axial force of 10 kN. The optical and Scanning Electron microstructures are precisely revealed the homogeneous distribution of Al2O3 and SiC particles in the stir zone of surface composite layer (SCL). The microhardness was measured across the cross section of SCL layers of Aluminium and Aluminium with SiC and Al2O3. The higher microhardness was obtained in Aluminium with SiC and Al2O3 composites fabricated by FSP. This is because of the higher hardness value of SiC particles than Al2O3 particles.

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