A. Nagarajan, S. Mukherjee, et al.
Journal of Applied Mechanics, Transactions ASME
The fracture behavior of Al2O3 containing 5 vol% 0.15μm SiC particles was investigated using indentation techniques. A significant increase in strength was achieved by the addition of SiC particles to the base Al2O3. Specifically, the strength increased from 560 MPa for Al2O3 to 760 MPa for the composite samples (average values for unindented hotpressed bars tested in four‐point bending). After annealing for 2 h at 1300°C, the average strength of the composite samples increased to about 1000 MPa. Toughness was estimated using indentation‐strength data. While there was a slight increase in toughness, the increase was not sufficient to account for the increase in the unindented strength on SiC particle addition. It is suggested that the observed strengthening and apparent toughening were due to a machining‐induced compressive surface stress. Copyright © 1993, Wiley Blackwell. All rights reserved
A. Nagarajan, S. Mukherjee, et al.
Journal of Applied Mechanics, Transactions ASME
Sung Ho Kim, Oun-Ho Park, et al.
Small
Sharee J. McNab, Richard J. Blaikie
Materials Research Society Symposium - Proceedings
Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering