scholarly journals Regeneration of Aluminum Matrix Composite Reinforced by SiCp and GCsf Using Gas Tungsten Arc Welding Technology

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6410
Author(s):  
Katarzyna Łyczkowska ◽  
Janusz Adamiec ◽  
Anna Janina Dolata ◽  
Maciej Dyzia ◽  
Jakub Wieczorek
Keyword(s):  
Silicon Carbide ◽  
Matrix Composite ◽  
Arc Welding ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Gas Tungsten Arc Welding ◽  
Composite Surface ◽  
Tribological Tests ◽  
Gas Tungsten Arc ◽  
Welding Technology

The main motivation behind the presented research was the regeneration of the damaged surface of composite materials. The testing of melting and pad welding of the composite surface by Gas Tungsten Arc Welding (GTAW) with alternating current (AC) were carried out. The material of investigation was an AlSi12/SiCp + GCsf hybrid composite made by a centrifugal casting process. The composite was reinforced with 5 wt.% of silicon carbide particles and 5 wt.% of glassy carbon spheres. The composites were investigated in tribological tests. It was found that there was a possibility for modification or regeneration of the surface with pad welding technology. Recommended for the repairs was the pad welding method with filler metal with a chemical composition similar to the aluminum matrix composite (ISO 18273 S Al4047A (AlSi12 [A])). The surface of the pad welding was characterized by the correct structure with visible SiCp. No gases or pores were observed in the pad welding; this was due to a better homogeneity of the silicon carbide (SiCp) distribution in the composite and better filling spaces between liquid metal particles in comparison to the base material. Based on the tribological tests, it was found that the lowest wear was observed for the composite surface after pad welding. This was related to the small number of reinforcing particles and their agreeable bonding with the matrix. The plastic deformation of the Al matrix and scratching by worn particles were a dominant wear mechanism of the surface.

scholarly journals Thermal and Mechanical Analyses of Dry Clutch Disk made of Functionally Graded Material.

2021 ◽  
Author(s):  
Ibrahim Ahmed Ibrahim Ali ◽  
Saeed Asiri
Keyword(s):  
Silicon Carbide ◽  
Matrix Composite ◽  
Aluminum Matrix ◽  
Friction Material ◽  
Aluminum Matrix Composite ◽  
Functionally Graded ◽  
High Wear Resistance ◽  
Graded Material ◽  
The Common ◽  
Dry Clutch

Abstract This paper presents an innovative utility of Functionally Graded Aluminum Matrix Composite (FGAMC) with Silicon Carbide as a friction material in clutches since having an acceptable friction coefficient and high wear resistance. FGAMC’s properties were calculated using rule-of-mixture and power law, represented by layered geometry. FGAMC’s behavior is examined considering statics, dynamics, thermal and wear. Analyses were done using Finite Element method, by ANSYS. Results are discussed by comparing FGAMC’s clutch to Aluminum matrix composite with 20% of Silicon Carbide clutch and E-glass clutch. Clutches design based on the common size and working conditions of clutches in mid-size and heavy automobiles. Most analyses revels FGAMC’s clutch has higher strain than AMC’s clutch with less deformation in thickness direction and less stresses. FGAMC’s clutch has higher mass leading to lower first natural frequency but with low resulted deformations. Transient analyses showed 10 times fewer maximum deformations for FGAMC’s clutch than AMC and E-glass with lower strains and higher stress but in much less area for FGAMC’s clutch. Wear which indicates working life of a clutch, have been studied using Archard Wear Equation in ANSYS, FGAMC’s clutch has 10 times lower wear with much less affected area compared to AMC and E-glass. Thermal analysis results of the three clutches are close to each other with 0.07 watts between FGAMC’s and AMC’s clutches, and 0.03 watts between FGAMC’s and E-Glass’s clutches.

Wear products that form during tribological tests of aluminum-matrix composite materials

2015 ◽  
Vol 2015 (4) ◽  
pp. 285-289 ◽  
Author(s):  
I. E. Kalashnikov ◽  
L. K. Bolotova ◽  
L. I. Kobeleva ◽  
P. A. Bykov ◽  
A. G. Kolmakov
Keyword(s):  
Composite Materials ◽  
Matrix Composite ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Tribological Tests ◽  
Wear Products

Gas tungsten arc welding of network structured titanium matrix composite

2017 ◽  
Vol 23 (5) ◽  
pp. 357-364 ◽  
Author(s):  
Lujun Huang ◽  
Tianbo Duan ◽  
Qi An ◽  
Youyou Chen ◽  
Jiuyang Bai ◽  
...  
Keyword(s):  
Matrix Composite ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Titanium Matrix ◽  
Titanium Matrix Composite ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Aluminum reinforcement by gas tungsten arc welding

2012 ◽  
Vol 19 (2) ◽  
pp. 101-105 ◽  
Author(s):  
Zohair Sarajan
Keyword(s):  
Silicon Carbide ◽  
Arc Welding ◽  
Light Metal ◽  
Gas Tungsten Arc Welding ◽  
Poly Vinyl Alcohol ◽  
Mixed Powder ◽  
Aluminum Silicon Alloy ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Aluminum Silicon

AbstractAluminum is a light metal and is widely used in a variety of industries. Aluminum-silicon has good casting properties but does not offer any suitable tribological properties. Therefore, in this study surface composite coating was performed by the gas tungsten arc welding (GTAW) process, which increased hardness up to 34 HV, which is nearly two times compared to untreated specimens. This process is done by composite manufacturing with the silicon carbide reinforcement particles in the matrix of eutectic aluminum-silicon alloy. The mixed powder is deposited on the surface during melting by travelling the arc of GTAW. The desired optimum performance condition is achieved by arc current 75 amp, 1 g of poly vinyl alcohol (PVA) binder, 65 wt.% of aluminum powder and 15 wt.% of silicon carbide.

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