scholarly journals Mechanical and metallurgical studies of multi-walled carbon nanotube–reinforced aluminium metal matrix surface composite by friction stir processing

2021 ◽  
Vol 8 (78) ◽  
pp. 643-650
Author(s):  
R. Raja ◽  
Sabitha Jannet ◽  
S. Rajesh Ruban
Keyword(s):  
Carbon Nanotube ◽  
Friction Stir Processing ◽  
Metal Matrix ◽  
Friction Stir ◽  
Surface Composite ◽  
Matrix Surface ◽  
Multi Walled Carbon Nanotube ◽  
Aluminium Metal

Development and Parametric Optimisation of Pure Magnesium Matrix Surface Composite by Friction Stir Processing

2021 ◽  
Vol 9 (2) ◽  
pp. 79-95
Author(s):  
Balraj Singh ◽  
Jagdev Singh ◽  
Ravinder Singh Joshi
Keyword(s):  
Process Parameters ◽  
Friction Stir Processing ◽  
Mechanical Performance ◽  
Plunge Depth ◽  
Friction Stir ◽  
Surface Composite ◽  
Cooling Temperature ◽  
Matrix Surface ◽  
Taguchi’S Technique ◽  
Tool Cooling

Friction stir processing (FSP) is an emerging method for improving surface properties of materials by composite fabrication. This study aims at optimizing the major FSP parameters and analysis of their real-time influence on the mechanical performance of a surface composite fabricated with Magnesium (Mg) matrix and Titanium Carbide (TiC) as reinforcement. Effects of different process parameters, tool rotational speed, plunge depth, the linear speed of the tool, cooling condition, and number of FSP passes have been examined. Using L27 array, a total of 27 combinations of these process parameters were analyzed by taking microhardness as an output response to find influential parameters by Taguchi's technique. Maximum micro-hardness was achieved when tool rpm of 600, cooling temperature of -10o C, tool feed of 15 mm/min, plunge depth of 0.35 mm, and 3 passes of FSP tool were chosen with the help of Taguchi's method. Analysis of variance indicated that cooling temperature, the tool feed, and the number of passes of the FSP tool were the most significant parameters.

scholarly journals A survey on reinforcements used in friction stir processing of aluminium metal matrix and hybrid composites

2019 ◽  
Vol 35 ◽  
pp. 935-940 ◽  
Author(s):  
Omolayo M. Ikumapayi ◽  
Esther T. Akinlabi ◽  
Surjya K. Pal ◽  
Jyotsna D. Majumdar
Keyword(s):  
Friction Stir Processing ◽  
Metal Matrix ◽  
Hybrid Composites ◽  
Friction Stir ◽  
Aluminium Metal

scholarly journals Fabrication of Aluminium Metal Matrix Composite by Friction Stir Processing

2021 ◽  
Vol 9 (4) ◽  
Keyword(s):  
Shape Memory ◽  
Friction Stir Processing ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Linear Distribution ◽  
Innovative Strategy ◽  
Friction Stir ◽  
Vertical Milling Machine ◽  
Filling Method ◽  
Aluminium Metal

Friction Stir Processing (FSP) is a new approach for successful fabrication of Aluminium Metal Matrix Composites (AMCs) with required properties of Nitinol (NiTi) Shape Memory Alloys (SMA). This reinforcement agent is used for heightening the mechanical properties of aluminium alloy with Shape Memory Effect but such fabrication was not possible without defects such as critical intermetallic formation between reinforced particles and matrix. So we present a creative strategy to fabricate Al7075-T6/NiTi composites by FSP. It has been found that the groove filling method results in a more homogenous distribution compared to the multi-holes filling method. In this innovative strategy, we are going to use the groove filling method with a new FSP tool design for the linear distribution of reinforcement particles in grooves. This FSP tool will be used with the help of a Vertical Milling Machine.

MICROSTRUCTURAL PROPERTIES AND PHASE CONSTITUENTS OF 5A06 ALUMINIUM MATRIX SURFACE COMPOSITE FABRICATED BY FRICTION STIR PROCESSING

2011 ◽  
Vol 18 (05) ◽  
pp. 183-188
Author(s):  
LIU PENG ◽  
QING-YU SHI ◽  
YUAN-BIN ZHANG ◽  
SHU-BO XU
Keyword(s):  
Base Metal ◽  
Friction Stir Processing ◽  
Aluminium Matrix ◽  
Air Cooling ◽  
Friction Stir ◽  
Surface Composite ◽  
Ultrafine Grained ◽  
Matrix Surface ◽  
Average Grain Size ◽  
Amorphous Structures

A novel aluminium matrix surface composite added Al -based amorphous, whose layer depth was 5 mm, was fabricated by friction stir processing (FSP), at an air cooling. The surface composite region shows the obvious sandwich structure. It is considered to be a combination between the base metal and the amorphous strip via the FSP. The average hardness of the surface composite is about HV97, higher than the base metal is about HV80. The maximum tensile strength of the processed aluminium plate with the surface composite is 410 MPa. XRD results indicate that the constituent phases of the surface composite mainly include α- Al , Mg2Al3 , MnAl6 and La3Al11 Moreover, no obvious amorphous diffraction peaks are observed in the XRD results. However, a large number of ultrafine grained structures can be observed in the surface composite. The average grain size of them is ~90–400 nm constitutes the surface composite. These ultrafine grained structures are composed of the α- Al and α- Al amorphous structures.

Machinability of AA7075-T6/carbon nanotube surface composite fabricated by friction stir processing

2018 ◽  
Vol 233 (4) ◽  
pp. 839-848 ◽  
Author(s):  
Ramin Mehdizad Tekiyeh ◽  
Mohsen Najafi ◽  
Saeid Shahraki
Keyword(s):  
Carbon Nanotube ◽  
Friction Stir Processing ◽  
Aluminum Matrix ◽  
Wear Test ◽  
Travel Speed ◽  
Raw Material ◽  
Subsequent Formation ◽  
Friction Stir ◽  
Surface Composite ◽  
Uniform Dispersion

Chip adhesion on rake face of cutting tool and subsequent formation of built-up-edge are critical problems in machining of aluminum alloys. In the current work, carbon nanotube as a solid lubricant has been integrated with aluminum 7075-T6 alloy through friction stir processing and the machinability of fabricated surface composite has been evaluated. Here, firstly, a series of friction stir processing experiment has been carried out to find optimum pass number regarding uniform dispersion of carbon nanotube in aluminum matrix. Then, a total number of 27 drilling experiments under different values of spindle speed and travel speed have been carried out on raw material, friction stir processed material without addition of carbon nanotube, and friction stir processed with addition of carbon nanotube. The obtained results showed that addition of carbon nanotube as reinforcement causes reduction of machining thrust force and surface roughness due to excellent lubrication property. Tribological observations through scanning electron microscopy and wear test revealed that the main mechanism for enhancing the machinability is reduction of friction coefficient as a result of carbon nanotube addition.

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