Elastic constants of zirconia single crystals determined by X-ray measurements for polycrystals

被引：18

作者：

Hayakawa, M ^{[1
]}

Miyauchi, H

Ikegami, A

Nishida, M

机构：

[1] Tottori Univ, Dept Mech Engn, Tottori 6800945, Japan

[2] Kumamoto Univ, Dept Mat Sci & Resource Engn, Kumamoto 8608555, Japan

来源：

MATERIALS TRANSACTIONS JIM | 1998年 / 39卷 / 02期

关键词：

single crystal elastic constants; polycrystal; cubic zirconia; tetragonal zirconia; X-ray diffraction; X-ray stress measurement; titanium-nickel; shape memory alloy;

D O I：

10.2320/matertrans1989.39.268

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A previously developed method for determining elastic constants of single crystals from polycrystalline specimens was applied to cubic and tetragonal zirconia. The method is based on the orientation dependence of the lattice strain of a stressed specimen as measured by X-ray diffraction and also on Kroner's equation relating the elastic constants of polycrystals to those of a single crystal. A simple loading device for a disc-shaped specimen was developed using a Ti-Ni shape memory alloy. The resulting elastic constants, C-11, C-12, and C-44 for cubic zirconia were in fair agreement with those measured directly on a single crystal. The same method was applied to tetragonal zirconia after verifying that the elasticity of this material may be well approximated by cubic symmetry. Error analysis and suggestions for an improved measurement are also included.

引用

页码：268 / 274

页数：7