Boddapati, Srinivasa Rao and Rodel, Jurgen and Jayaram, Vikram (2007) Crack growth resistance (R-curve) behaviour and thermo-physical properties of $Al_2O_3$ particle-reinforced AlN/Al matrix composites. In: Composites Part A: Applied Science and Manufacturing, 38 (3). pp. 1038-1050.
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Crack growth resistance behaviour and thermo-physical properties of $Al_2O_3$ particle-reinforced AlN/Al matrix composites have been studied as a function of AlN volume fraction as well as $Al_2O_3$ particle size. The fracture toughness of the composites decreased with increase in vol% AlN and decrease in $Al_2O_3$ particle size. All the composites exhibited R-curve behaviour which has been attributed to crack bridging by the intact metal ligaments behind the crack tip. The Young’s modulus of the composites increased with the vol% of AlN whereas the thermal diffusivity and coefficient of thermal expansion followed a reverse trend. The composites exhibited hysteresis in thermal expansion as a function of temperature and the hysteresis decreased with decrease in metal content of the composite.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier.|
|Keywords:||A.Particle-reinforcement;B.Fracture;B.Thermal properties; Liquid metal infiltration|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||09 Apr 2007|
|Last Modified:||19 Sep 2010 04:36|
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