SURFACE DISPLACEMENT ANALYSIS OF THE TRANSFORMED ZONE IN MAGNESIA PARTIALLY STABILIZED ZIRCONIA

被引:19
作者
COX, BN
MARSHALL, DB
KOURIS, D
MURA, T
机构
[1] ROCKWELL INT CORP,CTR SCI,DEPT CIVIL ENGN,THOUSAND OAKS,CA 91360
[2] NORTHWESTERN UNIV,DEPT CIVIL ENGN,EVANSTON,IL 60201
来源
JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME | 1988年 / 110卷 / 02期
关键词
CERAMIC MATERIALS - Toughening - FRACTURE MECHANICS - Mathematical Models - OPTICS - Moire Fringes - STRAIN - Analysis - SURFACES - Microscopic Examination;
D O I
10.1115/1.3226015
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The utility of surface displacement measurements as a source of quantitative information about subsurface plastic deformation is illustrated by analysis of the transformed zone in magnesia partially stabilized zirconia (Mg-PSZ). The surface displacements are derived from partial fringe analysis of optical interference micrographs. It is found that the transformed zones around either through cracks or small, surface-breaking cracks in Mg-PSZ are inhomogeneous. The degree of transformation is near the maximum possible only within a few microns of the crack plane. It falls away linearly or faster as the distance from the crack plane increases. Qualitative evidence suggests furthermore that significant net shear transformation persists near the crack plane. These conclusions are consistent with phase analysis using Raman spectroscopy.
引用
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页码:105 / 109
页数:5
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