발간논문

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Vol.31, No.3, 287 ~ 295, 1993
Title
A Study on Residual stress Distribution in ZrO2 / Stainless Steel Joint
김종헌Jong Heon Kim, 권용환Yong Hwan Kwon, 김태영Tae Young Kim, 유연철Yeon Chul Yoo
Abstract
Residual stresses of ZrO₂/AISI304 joint were determined by measuring the diffracted X-ray peak shift with an incident angle Ψ, sin²Ψ method and the results were compared with that of Finite Element Method (FEM). In X-ray diffraction method, radial stress in ceramic was mainly compressive decreasing with the distance from the center to edge. And the radial stress in stainless steel was also compressive unexpectedly. It`s because that tensile stress developed at A12024/AISI304 interface transformed rapidly into compressive component as distance from the interface increased, and it was confirmed in FEM results. In FEM calculation, high tensile axial stress was found to develop in ZrO₂edge close to interface and also in interlayer. In this study the fracture of joint occurred in the interlayer and it supported the FEM result that high axial stress was developed in the interlayer. There was qualitative agreement between analytical estimation and experimental result and the X-ray diffraction method with the FEM analysis seems to be effective to determine the residual stress in metal/ceramic joint.
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