A MODEL FOR THE OXIDE-GROWTH STRESS AND ITS EFFECT ON THE CREEP OF METALS

被引：54

作者：

BERNSTEIN, HL

机构：

[1] Department of Mechanical Engineering, University of Houston, Houston, 77004, TX

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1987年 / 18卷 / 06期

关键词：

D O I：

10.1007/BF02668546

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A mathematical model is developed for the effect of the oxide growth stress upon the high temperature deformation of metal. The growth stress is modeled as a volumetric strain calculated from a modified Pilling-Bedworth ratio. The model is three-dimensional and allows the metal and the oxide scale to undergo both elastic and creep deformation during oxidation. The problems of oxidizing a flat plate, a solid rod, and a curved plate are formulated and solved. Experimental results for these geometries in the Ni-NiO system at 1000 °C are well predicted, both with and without an external load. The creep properties and the stress distribution in the NiO scale are calculated. © 1991 The Minerals, Metals and Materials Society, and ASM International.

引用

页码：975 / 986

页数：12

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