Examining the influence of shoulder to pin diameter ratio on corrosion behavior of friction stir LM25 aluminum alloy with 10% silicon carbide particles

2020 ◽  
Vol 75 (5) ◽  
pp. 288-299
Author(s):  
V. Senthil ◽  
E. Balasubramanian
Keyword(s):  
Silicon Carbide ◽  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Diameter Ratio ◽  
Friction Stir ◽  
Silicon Carbide Particles ◽  
Carbide Particles

Effect of hybrid reinforcement at stirred zone of dissimilar aluminium alloys during friction stir welding

2019 ◽  
Vol 116 (6) ◽  
pp. 631 ◽  
Author(s):  
R. Ashok kumar ◽  
G.R. Raghav ◽  
K.J. Nagarajan ◽  
Sathish Rengarajan ◽  
P. Suganthi ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Friction Stir Welding ◽  
Aluminium Alloys ◽  
Groove Depth ◽  
Weld Nugget ◽  
Wear Properties ◽  
Friction Stir ◽  
Alumina Particles ◽  
Silicon Carbide Particles ◽  
Carbide Particles

The main objective of this work is to modify the mechanical as well as surface properties of weld nugget by the reinforcement of hybrid ceramic particles (alumina and silicon carbide). This is accomplished by combining friction stir welding (FSW) and friction stir processing (FSP) on dissimilar AA6101-T6 and AA1350 aluminium alloys. For this purpose, various levels of mixing proportions of Al2O3 & SiC particles are used with constant groove depth and width i.e. constant groove dimension. To evaluate the quality of joints, tensile, bending, micro-hardness, wear and microstructural studies are carried out. Among these, reinforcement of 100% alumina particles exhibits better mechanical and wear properties. On the other hand, reinforcement of 100% silicon carbide particles produces poor mechanical and wear properties. And also increment in percentage of reinforcement of alumina particles improves the mechanical and wear properties of weld nugget, when compared to increment in percentage of reinforcement of silicon carbide particles.

High-cycle fatigue of a metal matrix composite based on an aluminum alloy 7075-T1 reinforced with silicon carbide particles

2020 ◽  
pp. 131-140
Author(s):  
M. A. Gorbovets ◽  
D. V. Kosolapov ◽  
P. V. Ryzhkov
Keyword(s):  
Silicon Carbide ◽  
Aluminum Alloy ◽  
Room Temperature ◽  
High Cycle Fatigue ◽  
Stress Amplitude ◽  
Raw Material ◽  
Progressive Deformation ◽  
Silicon Carbide Particles ◽  
Aluminum Alloy 7075 ◽  
Carbide Particles

The article presents results of the fatigue strength study of a metal matrix composites based on an aluminum alloy of the 7075-T1 grade, containing 20 vol.% silicon carbide obtained by powder technology using mechanical alloying followed by hot pressing. The high-cycle fatigue (HCF) study was carried out at five levels of stress amplitude at room temperature and at four levels of stress amplitude at high temperature (100°C). Smooth samples of corset type with a circular cross section were manufactured in accordance with the requirements of GOST 25.502–79. Synthesized samples went through the heat treatment stage characteristic of the matrix aluminum alloy 7075. Spherical particles within the range from 5 to 70 μm served as the raw material for the initial matrix of the composite material, and the raw material for the reinforcing component were silicon carbide powder particles, which after a long mechanical alloying with matrix particles take the form of granules from 400 to 600 microns.The study of fatigue characteristics led to the conclusion that the introduction of a 20% reinforcing phase into the 7075-T1 matrix alloy based on silicon carbide particles made it possible to achieve a 1.3 times increase in endurance limits based on 2·107 cycles. An increase in the test temperature (100°C) leads to a decrease of 8% in the endurance limit. The change in the values of progressive deformation and resonance frequency during testing at room and high temperatures (100°C) is considered. At room temperature, it was found that with increasing durability, progressive deformation accumulates. At high temperature (100°C), it was found that with a decrease in durability, resonance frequency decreases more pronouncedly at each stress level.

Salt fog corrosion behavior of friction stir welded AA2014-T651 aluminum alloy

2016 ◽  
Vol 58 (11-12) ◽  
pp. 932-938 ◽  
Author(s):  
Kollapuri Thamilarasan ◽  
Sadayan Rajendraboopathy ◽  
Gankidi Madhusudhan Reddy ◽  
Tadivaka Srinivasa Rao ◽  
Sajja Rama ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Friction Stir ◽  
Salt Fog Corrosion ◽  
Salt Fog
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