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

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.

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.

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.

Direct Extrusion of Circular Profiles with Surface Composite Produced by Friction Stir Processing

2011 ◽  
Vol 383-390 ◽  
pp. 2747-2752
Author(s):  
Arash Aghagol ◽  
Saeed Mahmoodi Darani ◽  
Karen Abrinia ◽  
Mohammad Kazem Besharati Givi
Keyword(s):  
Base Metal ◽  
Friction Stir Processing ◽  
Composite Layer ◽  
Traverse Speed ◽  
Extrusion Ratio ◽  
Friction Stir ◽  
Surface Composite ◽  
Direct Extrusion ◽  
Shoulder Diameter ◽  
Before And After

In this research, a new application of friction stir processing (FSP) in producing surface composite on circular billets was introduced. Al/Cu composite was fabricated by FSP on the surface of a 1050 aluminium cylinder with the diameter of 60 mm. Then this cylinder with surface composite was extruded with the extrusion ratio of 1.7. Finally, microstructure and microhardness were investigated before and after the extrusion. H13 hot work steel was used as the material of the tool whose pin diameter and length were 6 mm and shoulder diameter was 18 mm. The rotation and traverse speed of the tool were 1000 rpm and 25 mm/min respectively. The microstructural investigations show that the thickness of the composite layer decreases and a uniform layer of the composite remains on the surface after the extrusion. Also the microhardness measurements demonstrated that the hardness of the composite layer was higher than the base metal and the microhardness of all zones increased after the extrusion.

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