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Analytical and Experimental Investigation of Flow and Fracture Mechanisms Induced by Indentation in Single Crystal MgO

Published online by Cambridge University Press:  06 March 2019

T. Larchuk ,
T. Kato ,
R. N. Pangborn  and
J. C. Conway Jr.
T. Larchuk
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
T. Kato
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
R. N. Pangborn
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
J. C. Conway Jr.
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802 USA
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Extract

The flow and fracture behavior of ceramic and other brittle materials under the influence of contact loading is important to both component fabrication and performance. The ease of machining, severity of residual surface damage and rate of wear during subsequent service are controlled to a large degree by the character and extent of the flow zone and its influence on the fracture mode. This Investigation was undertaken to provide experimental verification of the results obtained through elastic/plastic finite element modeling cf the stress distribution and deformations introduced by static contact loading. Experimentally, X-ray double-crystal diffractometry (DCD) was applied to obtain a mapping of the distortions produced beneath a Vickers indenter, and hence to evaluate the effect of material and geometric parameters on the flow and fracture mechanisms.

Type
V. X-Ray Stress Determination, Position Sensitive Detectors, Fatigue and Fracture Characterization
Information
Advances in X-Ray Analysis , Volume 26: Thirty-First Annual Conference on Applications of X-ray Analysis, August 1-6, 1982 , 1982 , pp. 299 - 306
Copyright
Copyright © International Centre for Diffraction Data 1982

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References

1. Lawn, B. and Wilshaw, R., Review, Indentation fracture:principles and applications, J. Mater. Sci., 10:1049 (1975).Google Scholar
2. Lawn, B. R. and Swain, M. V., Microfracture beneath point indentations in brittle solids, J. Mater. Sci., 10:113 (1975).Google Scholar
3. Boussinesq, J., “Application des Potentiels a 1'Etude de l'Equilibre et du Mouvement des Solides Elastiques,” Gauthier-Villars, Paris (1885).Google Scholar
4. Michell, J. H., Some elementary distributions of stress in three dimensions, Proc. London Math. Soc., 32:23 (1900).Google Scholar
5. Hagan, J. T., Micromechanics of crack nucleation during indentations, J. Mater. Sci., 14:2975 (1979). ‘Google Scholar
6. Armstrong, R. W. and Wu, C. Cm., Lattice misorientation and displaced volume for microhardness indentations in MgO crystals, J. Amer. Cer. Soc., 61:102 (1978).Google Scholar
7. Hockey, B. J. and Lawn, B. R., Electron microscopy of microcracking. about indentations in aluminum oxide and silicon carbide, J. Mater. Sci., 10:1275 (1975).Google Scholar
8. Lankford, J. and Davidson, D. L., Indentation plasticity and microfracture in silicon carbide, J. Mater. Sci., 14:1669 (1979).Google Scholar
9. Tsunekawa, Y. and Weissmann, S., Importance of microplasticity in the fracture of silicon, Met. Trans., 5:1585 (1974).Google Scholar
10. Johnson, K. L., The correlation of indentation experiments, J. Mech. Phys. Solids, 18:115 (1970).Google Scholar
11. Stokes, R. J., Johnston, T. L., and Li, C. H., Crack formation in magnesium oxide single crystals, Phil. Mag., 3:718 (1958).Google Scholar
12. Stokes, R. J., Johnston, T. L., and Li, C. H., Effect of surface condition on the initiation of plastic flow in magnesium oxide, TMS-AIMB, 215:437 (1959).Google Scholar