Properties of Aluminum Based Composite in Different Quenching Media

Authors

  • Khushbu Dash Research Scholar Dept. of Metallurgical and Materials Engg. National Institute of Technology, Rourkela – 769008 Phone – +91-9439281130(M) Fax - +91-661-2465999
  • Anuj Dash B.Tech student Dept. of Metallurgical and Materials Engg. National Institute of Technology, Rourkela – 769008
  • Anil Nayak B.Tech student Dept. of Metallurgical and Materials Engg. National Institute of Technology, Rourkela – 769008
  • Bankim Chandra Ray Professor Dept. of Metallurgical and Materials Engg. National Institute of Technology, Rourkela – 769008

Keywords:

Micro composite, Nano composite, Hardness, Quenching, Thermal misfit, Interfacial damage, Decohesion, Debonding, Dislocation

Abstract

Particle reinforced aluminium matrix composites are frequently used in various automotive and aerospace applications involving critical functions like piston rings, wing mid and inner cover etc. Here the composites are frequently subjected to extreme conditions involving large temperature differentials in a short period of time which can damage the particle matrix interface resulting in a decreased ability to resist matrix deformation or strengthen the matrix through dislocation generation from the thermal misfit between matrix and reinforcement. Hence, this phenomenon has been investigated in the course of this work by quenching aluminium-alumina micro and nano composites in different quenchants and studying the effects on mechanical properties as well as the microstructure. Increase in hardness was likely due to dislocation generation as was realized from the greater increase for higher vol. fraction reinforcement composites, while post quench softening was likely due to decohesion and cracking of particles and interfacial damage.

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Published

2019-01-12

Issue

Vol. 1 No. 3 (2014): Journal of Advanced Research in Manufacturing, Material Science & Metallurgical Engineering

Section

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