Strain‐Rate‐Dependent Transformation Behavior of a 9 mol% Ce‐TZP Ceramic

Tianshun Liu, Yiu‐Wing ‐W Mai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


The strain rate dependence of the stress‐induced t–m transformation behavior of a Ce‐TZP ceramic with a grain size of 1.1 μm has been investigated both in four‐point bend and Charpy impact tests. The crosshead speed was varied from 8.3 × 10−8 m/s to 8.3 × 10−3 m/s in the four‐point bend tests. In the impact tests, the striking velocity was 2.5 m/s. Double notches (a/w= 0.5) were made on one side of the specimen to measure the stress‐induced t–m transformation zone size at the nonpropagated notch tip. It was found that a transition of the transformation zone size with crosshead speed occurred at about 10−6 to 10−5 m/s. Above this critical speed, the transformation zone was at least an order of magnitude larger in size. This new strain‐rate‐dependent transformation behavior has not been previously reported.

Original languageEnglish
Pages (from-to)3495-3497
Number of pages3
JournalJournal of the American Ceramic Society
Issue number12
Publication statusPublished - Dec 1992
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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