Rao, Boddapati Srinivasa ; Rodel, Jurgen ; Jayaram, Vikram (2007) Crack growth resistance (R-curve) behaviour and thermo-physical properties of Al2O3 particle-reinforced AlN/Al matrix composites Composites Part A: Applied Science and Manufacturing, 38 (3). pp. 1038-1050. ISSN 1359-835X
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S13598...
Related URL: http://dx.doi.org/10.1016/j.compositesa.2006.06.015
Abstract
Crack growth resistance behaviour and thermo-physical properties of Al2O3 particle-reinforced AlN/Al matrix composites have been studied as a function of AlN volume fraction as well as Al2O3 particle size. The fracture toughness of the composites decreased with increase in vol% AlN and decrease in Al2O3 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: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Particle-reinforcement; B. Fracture; B. Thermal Properties; Liquid Metal Infiltration |
| ID Code: | 13490 |
| Deposited On: | 12 Nov 2010 15:28 |
| Last Modified: | 23 Feb 2011 07:03 |
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