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Indentation response of molybdenum disilicide

  • A. Newman
  • , T. Jewett
  • , S. Sampath
  • , C. Berndt
  • , H. Herman

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

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.

Original languageEnglish
Pages (from-to)2662-2671
Number of pages10
JournalJournal of Materials Research
Volume13
Issue number9
DOIs
StatePublished - Sep 1998

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