AlSi-SiC Composites for Automotive Brake Rotor

2020 ◽  
Vol 835 ◽  
pp. 178-185
Author(s):  
Fatma Firouz ◽  
Atef Daoud ◽  
Malak Abou El-Khair
Keyword(s):  
Solution Treatment ◽  
Stir Casting ◽  
Primary Phase ◽  
Casting Method ◽  
Sic Particles ◽  
Brake Rotor ◽  
Eutectic Si ◽  
Sic Composites ◽  
Brake Rotors ◽  
Automotive Brake

This manuscript investigates the Fabrication and Microstructure of Automotive Brake Rotor Made of AlSi-SiC Composites. This work is oriented toward fabrication of automotive brake rotors from Al-9Si and Al-12Si reinforced with 10 and 20% SiC particles using stir-casting method. The brake rotors were subjected to heat treatment. Aging behavior showed that hardness increased with the addition of SiC reinforcements by 104%, comparing to solution treatment condition. Also, the addition of SiC particles accelerates formation of precipitates. Microstructure of brake rotors made of composite revealed uniform distribution of SiC particles, primary phase (⍺-Al) and modified eutectic Si. EDX analysis showed the presence of Al, Mg and O at the interface between matrix and SiC particles.

Silicon Carbide Effect as Reinforcement on Aluminium Metal Matrix Composite

2019 ◽  
Vol 41 (4) ◽  
pp. 650-650
Author(s):  
Ali Dad Chandio Ali Dad Chandio ◽  
Muhammad Basit Ansari Muhammad Basit Ansari ◽  
Shahid Hussain Shahid Hussain ◽  
Muhammad Ali Siddiqui Muhammad Ali Siddiqui
Keyword(s):  
Silicon Carbide ◽  
Stress Transfer ◽  
Stir Casting ◽  
Powder Metallurgy Method ◽  
Casting Method ◽  
Morphological Evaluation ◽  
Sic Particulates ◽  
Dislocation Strengthening ◽  
Sic Composites ◽  
Aluminium Metal

In the present study aluminium silicon carbide (Al/SiC) composites were prepared by powder metallurgical method. The mechanical and morphological evaluation were studied upon the variation of reinforcements percentages i.e.10, 15 and 20 wt.% of SiC powder were used as the reinforcements in aluminium matrix. The comparison of powder metallurgy method with stir casting method of Al/ (SiC) composites preparation was performed and the particle reinforcements were visualized through Scanning Electron Microscopy (SEM). The results demonstrated increased hardness with increasing wt. % of SiC particles. This was attributed to efficient stress transfer and dislocation strengthening. In addition, the densification behaviour of the composites was also studied and SiC particulates were found to exhibit profound effect on composites density.

scholarly journals Thermal expansion and fatigue properties of automotive brake rotor made of AlSi–SiC composites

2020 ◽  
Vol 6 (12) ◽  
pp. 1265d2 ◽  
Author(s):  
F M Firouz ◽  
E Mohamed ◽  
A Lotfy ◽  
A Daoud ◽  
M T Abou El-Khair
Keyword(s):  
Thermal Expansion ◽  
Fatigue Properties ◽  
Brake Rotor ◽  
Sic Composites ◽  
Automotive Brake

scholarly journals Effect of Heat Treatment on the Microstructure and Mechanical Properties of a Composite Made of Al-Si-Cu-Mg Aluminum Alloy Reinforced with SiC Particles

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1205
Author(s):  
Li ◽  
Yan ◽  
Wang ◽  
Li ◽  
Liu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloy ◽  
Artificial Aging ◽  
Solution Treatment ◽  
Optimal Solution ◽  
Tensile Fracture ◽  
Large Area ◽  
Tensile Fracture Surface ◽  
Sic Particles ◽  
Eutectic Si

In this paper, the effect of heat treatment (solution treatment and artificial aging) on the microstructure and properties of as-cast Al5Si1Cu0.5Mg aluminum alloy and its composite reinforced with 1.5 wt.% SiC particles was studied. The results showed that at 520 °C the optimal solution time for the aluminum alloy and its composite is 9 h and 6 h, respectively. After solution treatment, the microstructure of these two materials consists of a uniform distribution of nearly spherical eutectic Si and skeletal γ phase, furthermore, the composite eutectic Si phase is smaller and γ phase is more dispersed. After artificial aging at 175 °C for 6 h, the microstructure of the composite is more dispersed and finer than that of the aluminum alloy on the whole and Al2Cu is precipitated. After heat treatment, the microhardness, ultimate tensile strength, and elongation of the aluminum alloy and its composite are higher than those of the as-casts. At the same time, the morphology of tensile fracture surface changes very much from a large area of cleavage plane to a large number of dimples and the tearing ridges become thicker for both the aluminum alloy and its composite.

Microstructure, Mechanical and Corrosion Behaviour of Cu-SiC Composites Fabricated by Stir Casting Method

2021 ◽  
pp. 93-102
Author(s):  
Anil Kothari ◽  
Hemant Jain ◽  
Vikas Shrivastava ◽  
Richa Thakur ◽  
Pankaj Agarwal ◽  
...  
Keyword(s):  
Corrosion Behaviour ◽  
Stir Casting ◽  
Casting Method ◽  
Sic Composites

scholarly journals Characterization of Microstructure and Mechanical Properties of CuCr Alloy Produced by Stir Casting

2019 ◽  
Vol 12 (4) ◽  
pp. 82-91
Author(s):  
Asaad Kadhim Eqal ◽  
Sami Abualnoun Ajeel ◽  
Rabiha S. Yaseen
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chromium Content ◽  
Pure Copper ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Stir Casting ◽  
Casting Method ◽  
Alloy Castings

The relatively low mechanical properties of pure copper at low and high temperature made it very limited applications. The mechanical properties of the copper can be improved by adding a small amount of elements such as Cr. This work consists of four CuCr alloy castings (0.3, 0.8, 1.2 and 1.5%) by using the stir casting method in an argon atmosphere. Then, the heat treatment was done for these alloys which included solution treatment and aging. Heat treatment was treated at 980 ° C for 1 hour, then water-quenching, followed by an aging treatment at 480 ° C for 2.4 and 6 hours. The Optical Microscopy and the Scanning Electron Microscopy (SEM) with  (EDS) were used to study the microscopic structure of the produced alloys. The results showed that the mechanical properties of copper increased with increasing chromium content. The microstructure of the castings consist of  the dendiritic structure, columinar and segregation. It has been also indicated that after heat treatment and aging, the microstructure changed to fine grains and the clusters disappeared. XRD showed a α-Cu phase and a small amount of CrO2 in microstructures. The highest value of hardness and the ultimate tensile were 101 Hv and 239.12 MPa, respectively. They were achieved at 1.5wt% addition of Cr at 480oC and 4hrs aging

scholarly journals Karakterisasi Blok Rem Kereta Api Berbahan Al-Sic Berdasarkan Komposisi Material

2011 ◽  
Vol 13 (1) ◽  
pp. 29-35
Author(s):  
Ipung Kurniawan ◽  
Bayuseno AP
Keyword(s):  
Weight Fraction ◽  
Stir Casting ◽  
Matrix Composites ◽  
Casting Method ◽  
Braking System ◽  
Wear And Tear ◽  
Vital Component ◽  
Resistance To Wear ◽  
Sic Composites

Brake blocks is a vital component in the braking system of trains. Generally material brake blocks made ​​of cast iron. But the usage is still less effective than the weight and resistance to wear. Al-SiC composites with the variation of weight fraction of 5, 10 and 15% SiC is expected to address the problem as expected. Stir casting method was chosen for the process of formation of Metal Matrix Composites (MMC), which includes the characterization of microstructure and wear of materials. Wear and tear on the material tested by the method ogoshi at 2.12 kg load and a constant sliding speed 0.244 m/s for 60 seconds. Small value indicates the specific wear resistance of materials against wear is good.

A case study on applying creative design concepts to brake rotor design

2016 ◽  
Vol 14 (1) ◽  
pp. 2-16
Author(s):  
S. Vinodh ◽  
Sharath Kumar T.
Keyword(s):  
Research Work ◽  
Creative Design ◽  
Content Type ◽  
Design Concepts ◽  
Braking System ◽  
Rotor Design ◽  
Brake Rotor ◽  
Brake Rotors ◽  
Automotive Brake

Purpose – The purpose of this paper is to report a study in which creative design concepts have been applied to automotive brake rotor design. Design/methodology/approach – The literature review on creative design concepts and braking system scenario has been carried out. By studying the existing brake rotors and applying creative design concepts, modified rotor designs have been developed. Findings – The experience gained out of the study indicated that braking efficiency and durability of the braking system can be significantly improved by the adoption of proposed designs. Research limitations/implications – The research has been carried out for an automotive passenger car. The findings of this research work could be extended to similar models of buses and trucks. Practical implications – The usage of the proposed designs reduces the driver’s effort in braking and adds significantly to the life of the rotors. Originality/value – A case study has been reported to indicate the application of creative design concepts for enhancing the efficiency of automotive braking system in cars.

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