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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2018028877
pages 249-258

SUPERIOR MATERIAL PROPERTIES OF HYBRID FILLER-REINFORCED ALUMINUM MMC THROUGH DOUBLE-LAYER FEEDING TECHNIQUE ADOPTED IN BOTTOM TAPPING STIR CASTING

S. Prakash
Department of Mechanical Engineering, Selvam College of Technology, Namakkal, Tamil Nadu, India
Rathinasabapathy Sasikumar
Department of Mechanical Engineering, Selvam College of Technology, Namakkal, Tamil Nadu, India
Elango Natarajan
Faculty of Engineering, UCSI University, KualaLumpur, Malaysia

ABSTRAKT

Aluminum metal matrix composite (AMMCs) is one of the competent materials in aerospace and defence industry among various existing composites. Silicon carbide (2.5 wt.%), magnesium oxide (2.5 wt.%), aluminum oxide (2.5 wt.%) fillers are attempted in this research to improve the mechanical properties of the AA7075 alloy. Single filler-reinforced samples and hybrid filler-reinforced samples are prepared using the double-layer feeding method adopted in the bottom tapping stir casting technique. The mechanical properties of the composite are examined as per ASTM standard, and distributions of fillers are characterized by means of an optical microscope. A drastic increase in tensile strength (34%), yield strength (45%), and hardness (44%) is shown by the AA7075/MgO/SiC/Al2O3 composite. It is also noticed that the injected microfillers are reasonably distributed over the base matrix with low porosity and low agglomeration that aids in obtaining the improved properties.


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