Creep-fatigue-oxidation interactions in a 9Cr-1Mo martensitic steel.: Part II:: Effect of compressive holding period on fatigue lifetime

被引：92

作者：

Fournier, B. ^{[1
,2
]}

Sauzay, M. ^{[2
]}

Caes, C. ^{[1
]}

Noblecourt, M. ^{[1
]}

Mottot, M. ^{[1
]}

Bougault, A. ^{[1
]}

Rabeau, V. ^{[1
]}

Pineau, A. ^{[2
]}

机构：

[1] CEAIDEN DANSIDMNISRMA, F-91191 Gif Sur Yvette, France

[2] CNRS, UMR 7633, Ctr Mat PM Fourt, ENSMP, F-91003 Evry, France

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2008年 / 30卷 / 04期

关键词：

creep; compressive holding periods; fatigue; oxidation; martensitic steel; crack initiation; 9Cr; high temperature; oxide cracking;

D O I：

10.1016/j.ijfatigue.2007.05.008

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Cyclic tests with compressive holding periods were carried out in air at 823 K on a modified 9Cr-1Mo martensitic steel. Inaccordance with other results published in the literature, compressive holding periods were found more deleterious than tensile ones, i.e. fatigue lifetimes were more severely reduced under compressive holding periods than under tensile holds. For all tested samples a strong influence of oxidation was observed, and a tensile mean stress was measured due to compressive holding periods. To understand the difference between compressive and tensile holding periods, a detailed study of the oxide layers mechanical behavior was carried out. Based on an extensive literature survey, focussed on the fracture behavior of oxide layers, and on Finite Element (FE) calculations, a general scheme for modelling creep-fatigue-oxidation interactions is proposed and discussed. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：663 / 676

页数：14

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