INDENTATION STUDIES ON Y2O3-STABILIZED ZRO2 .1. DEVELOPMENT OF INDENTATION-INDUCED CRACKS

Citation
Ms. Kaliszewski et al., INDENTATION STUDIES ON Y2O3-STABILIZED ZRO2 .1. DEVELOPMENT OF INDENTATION-INDUCED CRACKS, Journal of the American Ceramic Society, 77(5), 1994, pp. 1185-1193
Citations number
19
Categorie Soggetti
Material Science, Ceramics
ISSN journal
00027820
Volume
77
Issue
5
Year of publication
1994
Pages
1185 - 1193
Database
ISI
SICI code
0002-7820(1994)77:5<1185:ISOYZ.>2.0.ZU;2-J
Abstract
The development of Vickers indent-induced cracks with increasing inden t load has been studied in two Y2O3-stabilized ZrO2 ceramics. Such cra cks form as radial or Palmqvist cracks at low loads, assume ''kidney'' shapes at intermediate loads, and finally form median (half-penny) cr acks at high loads. The plastic zone directly beneath the indent is un cracked; a significant portion of the plasticity induced by indentatio n occurs by martensitic transformation.