Aluminum metal matrix composites

Composites, Metal Matrix Composites, Al MMC

1. Prepared By- Shakil Hossain Metal Matrix Composite PROJECT TITLE ALUMINUM METAL MATRIX COMPOSITES UNDER THE GUIDENCE OF MR. SAURABH THAKUR ASST. PROF., DEPT. OF MECHANICAL ENGINEERING SHIMLA UNIVERSITY PRESENTED BY SHAKIL HOSSAIN B. TECH (ME), 8 TH SEM, DEPT. OF MECHANICAL ENGINEERING

2. Page No. - 01/32 Metal Matrix Composite PLAN OF PRESENTATION Why we choose composite materials as our major project? Applications of composite materials. Difference between composites and alloy. Materials classification. Introduction to composites materials. Classification of composite materials. The reason behind choosing metal matrix composite from others type. Metal matrix composites- an overview. Introduction to Al MMC . Introduction to materials. Properties of materials. Advantages and disadvantages of die casting. Compositions. Working progress. Conclusion.

3. Page No. - 02/32 Metal Matrix Composite WHY WE CHOOSE COMPOSITE MATERIALS AS OUR MAJOR PROJECT? PROPERTIES OF COMPOSITE MATERIALS: High Strength and High Stiffness Tailored Design Fatigue Life Dimensional Stability Corrosion Resistance ADVANTAGES OF COMPOSITE MATERIALS: Light Weight  - Composites are light in weight, compared to most woods and metals. Their lightness is important in automobiles and aircraft, for example, where less weight means better fuel efficiency (more miles to the gallon). People who design airplanes are greatly concerned with weight, since reducing a craft’s weight reduces the amount of fuel it needs and increases the speeds it can reach. Some modern airplanes are built with more composites than metal including the new Boeing 787, Dreamliner . High Strength - Composites can be designed to be far stronger than aluminum or steel. Metals are equally strong in all directions . But composites can be engineered and designed to be strong in a specific direction.

4. Page No. - 03/32 Metal Matrix Composite Strength Related to Weight - Strength-to-weight ratio is a material’s strength in relation to how much it weighs. Some materials are very strong and heavy, such as steel. Other materials can be strong and light, such as bamboo poles. Composite materials can be designed to be both strong and light. This property is why composites are used to build airplanes—which need a very high strength material at the lowest possible weight. A composite can be made to resist bending in one direction, for example. When something is built with metal, and greater strength is needed in one direction, the material usually must be made thicker, which adds weight. Composites can be strong without being heavy. Composites are the highest strength-to-weight ratios in structures today . Corrosion Resistance High-Impact Strength Design Flexibility Dimensional Stability Low Thermal Conductivity Durable

5. Page No. - 04/32 Metal Matrix Composite APPLICATIONS OF COMPOSITE MATERIALS Aerospace Major OEMs such as Airbus and Boeing have shown the potential for large-scale composite applications in aviation, and NASA is continually looking to composites manufacturers for innovative space solutions for rockets and other spacecraft.

6. Page No. - 05/32 Metal Matrix Composite Architecture The architecture community is experiencing substantial growth in the understanding and use of composites. Composites offer architects and designers performance and value in large-scale projects and their use is increasing in commercial and residential buildings. Automotive As the largest composites market, the automotive industry is no stranger to composites. In addition to enabling groundbreaking vehicle designs, composites help make vehicles lighter and more fuel efficient.

7. Page No. - 06/32 Metal Matrix Composite Energy New advancements in composites, particularly those from the U.S. Department of Energy, are redefining the energy industry. Composites help enable the use of wind and solar power and improve the efficiency of traditional energy suppliers. Infrastructure Composites are used all over the world to help construct and repair a wide variety of infrastructure applications, from buildings and bridges to roads and railways.

8. Page No. - 07/32 Metal Matrix Composite Marine The marine industry uses composites to help make hulls lighter and more damage-resistant. Composites can be found in many more areas of a maritime vessel, including interior moldings and furniture on super yachts. Pipe & Tank Fiber-reinforced polymer composite pipes are used for everything from sewer upgrades and wastewater projects to desalination, oil and gas applications. When corrosion becomes a problem with pipes made with traditional materials, FRP is a solution.

9. Page No. - 08/32 Metal Matrix Composite Sports And Recreation From football helmets and hockey sticks to kayaks and bobsleds, carbon fiber and fiberglass composite materials help athletes reach their highest performance capabilities and provide durable, lightweight equipment. Transportation While CFRP in cars gets most of the attention, composites can also play a big role in increasing fuel efficiency in trucks . A number of U.S. state Departments of transportation are also using composite to reinforce the bridges those trucks travel on.

10. Page No. - 09/32 Metal Matrix Composite DIFFERENCE BETWEEN COMPOSITES AND ALLOY Alloy An alloy can either be a homogenous or a heterogeneous mixture. Composite A composite is always a heterogeneous mixture.

11. Page No. - 10/32 Metal Matrix Composite MATERIALS CLASSIFICATION

12. Page No. - 11/32 Metal Matrix Composite INTRODUCTION TO COMPOSITES MATERIALS Composite materials are engineered or naturally occurring materials which contain two or more distinct constituents with significantly different chemical, physical and mechanical properties. A composite material can be defined as a combination of two or more materials that results in better properties than those of the individual components used alone. Types: Metal Matrix Composites Polymer Matrix Composites Ceramic Matrix Composites Carbon-Carbon Matrix Composites

13. Page No. - 12/32 Metal Matrix Composite CLASSIFICATION OF COMPOSITE MATERIALS Composites Classification on the basis of Matrix Metal Matrix composite Polymer matrix composite Ceramic matrix composite Carbon-graphite matrix composite Thermoplastic Thermoplastic Composites classification on the basis of reinforcement Fiber Whiskers Flakes Particulate

14. Page No. – 13/32 Metal Matrix Composite THE REASON BEHIND CHOOSING METAL MATRIX COMPOSITE FROM OTHERS TYPE Properties of MMC: Higher Specific Modulus Higher Specific Strength Better Properties at Elevated Temperature Lower Coefficient of Thermal Expansion Better Wear Resistance Applications: Automobile Industries Aerospace Industries Satellite

15. Page No. - 14/32 Metal Matrix Composite METAL MATRIX COMPOSITES- AN OVERVIEW MMC (Metal matrix composites) are metals reinforced with other metal, ceramic or organic compounds. They are made by dispersing the reinforcements in the metal matrix. Reinforcements are usually done to improve the properties of the base metal like strength, stiffness, conductivity, etc.

16. Page No. - 15/32 Metal Matrix Composite INTRODUCTION TO Al MMC Aluminum and its alloys have the most attention as matrix material for MMCs and the most common reinforcement is SiC. MMC engine applications are produced and used for automobile engine cylinders die-cast from carbon fiber aluminum– Al2O3 material. Aluminum matrix composites (AMCs) are potential materials for various applications due to their good physical and mechanical properties. The addition of reinforcements into the metallic matrix improves the stiffness, specific strength, wear, creep and fatigue properties compared to the conventional engineering materials .

17. Page No. - 17/32 Metal Matrix Composite PROPERTIES OF MATERIALS Aluminum-6103

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20. Page No. - 22/32 Metal Matrix Composite ADVANTAGES AND DISADVANTAGES OF DIE CASTING Advantages Excellent dimensional accuracy. Smooth cast surfaces (1—2.5 μm (40—100 μin .) Thinner walls can be cast as compared to sand and permanent mold casting (approximately 0.75 mm (0.030 in .) Reduces or eliminates secondary machining operations . Rapid production rates . Casting tensile strength as high as 415 MPa (60 ksi ). Disadvantages High initial cost . Limited to high-fluidity metals . A certain amount of porosity is common . A large production volume is needed to make this an economical alternative to other processes.

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26. Page No. - 30/32 Metal Matrix Composite CONCLUSION Some Previous Work Shows That: SiC reinforced Al MMCs have higher wear resistance than Al2O3 reinforced MMCs. SiC reinforced Al MMCs are suitable materials for brake drums as they have high wear resistance but cannot be used in brake linings as it will damage the brake drum . It has been found that the increase in volume fraction of Al2O3 decreases the fracture toughness of the Al MMC. The optimum conditions for fabricatingAl2O3 reinforced Al MMC as pouring temperature-700 degree C , preheated mould temperature-550 degree C , the stirring speed-900 rev/min, particle addition rate-5g/min, the stirring time - 5min and the applied pressure was 6 MPa .

27. Page No. - 31/32 Metal Matrix Composite OPEN FOR QUESTIONS

28. Page No. - 32/32 Metal Matrix Composite THANK YOU