Aluminum Alloy- Ash Composites

Aluminum A Chemical Element in the Boron group

Its Symbol is Al

Atomic Number of Al is 13

It is a Silvery white, Soft & Ductile Metal

Al is the 3rd most abundant element available (after oxygen and silicon)

It has low density and ability to resist corrosion

Also Durable, Light weight and Malleable

Alloy A metallic material that is obtained by Chemical

combination of different elements

Pure metals are rarely used

Typically alloys have good mechanical properties than pure metals

In Aluminum Alloy the predominant element is Aluminum with the addition of Copper, Magnesium, Manganese, Silicon, Tin and Zinc

They are used in applications where light weight and corrosion resistance is required

Ash It is a fine powder produced from burning of Coal

They are spherical shaped balls, finer than cement

particles

It is a byproduct of coal based power plants

Tons of coal is burned daily in the industries, Tons of

Fly ash is produced daily

Composite The combination of Metals, Polymers or Ceramics in such a

way to get our desired properties

Better properties than either materials

Good strength to weight ratio, toughness

Matrix:

◦ Polymer Matrix Composites

◦ Ceramic Matrix Composites

◦ Metal Matrix Composites

Reinforcements:

◦ Particle Reinforced

◦ Fiber Reinforced

Metal Matrix Composite

Historical Background

Fabrication Methods Solid State Method

a) Powder Metallurgy Method:

Fabrication Methods

b) Liquid State Methods:

1. Stir Casting

2. Squeeze Casting

3. Compo-Casting

Fabrication Methods

Microstructure and some

mechanical properties of fly ash

particulate reinforced AA6061

aluminium alloy composites

prepared by compo casting

Chemical Composition

Mechanical Properties

Conclusion No formation of any intermetallic compounds due to interfacial reaction

The fly ash particles were thermodynamically stable at the compo-casting temperature

The majority of the fly ash particles were located in intra granular regions

The fly ash particles were dispersed homogeneously in the AMCs

The interface between the aluminium matrix and fly ash particle was clear and the bonding was proper

The incorporation of fly ash particles into semi solid aluminium alloy improved the wettability

The addition of fly ash particles enhanced the micro hardness and tensile strength of the AMCs

References1. J. David Raja Selvam, D.S.Robinson Smart, I.Dinaharan, Microstructure and some

mechanical properties of fly ash particulate reinforced AA6061 aluminium alloy

composites prepared by compo casting, Materials and Design 49 (2013) 28-34

2. Ervina Efzan M.N, Siti Syazwani N,Mohd Mustafa Al Bakri Abdullah Fabrication

Method of Aluminium Matrix Composite: A Review, Key Engineering Materials 700

(2016) 102-110

3. I. Narasimha Murthy, D. Venkata Rao, J. Babu Rao, Microstructure and mechanical

properties of aluminum–fly ash nano composites made by ultrasonic method,

Materials and Design 35 (2012) 55–65

4. H.C. Anilkumar, H.S. Hebbar, K.S. Ravishankar, Mechanical Properties Of Fly Ash

Reinforced Aluminium Alloy (Al6061) Composites, International Journal of

Mechanical and Materials Engineering 6 (2011) 41-45

5. Mr.Sharanabasappa R Patil, Prof B.S Motgi, A Study on Mechanical Properties of

Fly Ash and Alumina Reinforced Aluminium Alloy Composites, IOSR Journal of

Mechanical and Civil Engineering 7 (2013) 41-46

6. S. Sarkar, S. Sen, S. C. Mishra, Studies on Aluminium – Fly-Ash Composite

Produced by Impeller Mixing, Journal of Reinforced Plastics and Composites, 29

(2010) 32-39