Indentation response of molybdenum disilicide

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41657

Title: Indentation response of molybdenum disilicide
Author(s): Newman, A.; Jewett, Thomas J.; Sampath, Sanjay; Berndt, Christopher C.; Herman, Herbert
Abstract: The influence of microstructure on the indentation cracking behavior of molybdenum disilicide (MoSi2) has been examined. The indentation response of samples produced by various methods has been measured to examine the elastic/plastic nature, hardness, and fracture toughness. Fracture toughness comparisons were made by measuring indentation crack lengths, observing the elastic/plastic indentation response, and quantifying the differences in the indentation cracking behavior. Further information was gained by monitoring the acoustic activity during indentation for selected specimens. It has been observed that the fine grain size and the dispersion of the silica phase promote microcracking and crack deflection.
Publication type: Journal article
Source: Journal of Materials Research, Vol. 13, no. 9 (Sep 1998), pp. 2662-2671
Publication year: 1998
Keyword(s): Acoustic wave transmission; Crack initiation; Crystal microstructure; Elastoplasticity; Fracture toughness; Grain size and shape; Hardness; Microcracks; Molybdenum compounds; Molybdenum disilicide; MoSi2
Publisher: Materials Research Society
ISSN: 0884-2914
Publisher URL: http://dx.doi.org/10.1557/JMR.1998.0371
Peer reviewed