High-temperature deformation of Al₂O₃/Y-TZP particulate laminates

Jue Wang ^a, Eric M. Taleff ^a,b, Desiderio Kovar ^a,b,*

^a Materials Science and Engineering Program, The University of Texas at Austin, Austin, TX 78712, USA
^b Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA

Received 23 April 2004; received in revised form 18 June 2004; accepted 21 June 2004

Abstract
Al₂O₃/Y-TZP particulate laminates with varying compositions and ratios of layer thickness were fabricated by tapecasting, lamination, and sintering. The resulting particulate laminates were tested in compression at a temperature 1350°C over strain rates from 1.00·10^-5 to 3.16·10^-4 s^-1. Microstructural changes during testing were observed to be minor. Stress exponents were measured to be approximately two and are consistent with previous data for particulate composites. Using parameters determined from particulate composites, the behaviors of the particulate laminate composites are accurately predicted using a constrained isostrain model without additional fitting parameters.

2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Keywords: High-temperature deformation; Compression test; Laminates