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

被引：0

作者：

Bernstein, H.L. ^{[1
]}

机构：

[1] Univ of Houston, Houston, TX, USA, Univ of Houston, Houston, TX, USA

来源：

Metallurgical transactions. A, Physical metallurgy and materials science | 1987年 / 18 A卷 / 06期

关键词：

MATHEMATICAL MODELS - STRESSES;

D O I：

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学科分类号：

摘要：

A mathematical model is developed for the effect of oxide growth stress on the high temperature deformation of metal. The growth stress is modeled as a 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 palte are solved. Experimental results for these geometries in the Ni-NiO systems at 1000 degree C are well predicted, both with and without an external load. The creep propeties and stress distribution in the NiO scale are calculated.

引用

页码：975 / 986

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