The influence of temperature on the cyclic behavior of aged and unaged super duplex stainless steels

被引：28

作者：

Armas, A. F. ^{[1
]}

Herenu, S. ^{[1
]}

Alvarez-Armas, I. ^{[1
]}

Degallaix, S. ^{[2
]}

Condo, A. ^{[3
]}

Lovey, F. ^{[3
]}

机构：

[1] Inst Fis, UNR CONICET, RA-2000 Rosario, Santa Fe, Argentina

[2] Ecole Cen Lille, LML, CNRS, UMR 8107, F-59651 Villeneuve Dascq, France

[3] Ctr Atom Bariloche, RA-8300 San Carlos De Bariloche, Rio Negro, Argentina

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 491卷 / 1-2期

关键词：

duplex stainless steel; cyclic behavior; dislocation structure; embrittlement; dynamic strain aging; high temperature;

D O I：

10.1016/j.msea.2008.02.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The cyclic behavior of type UNS S32750 (super) duplex stainless steels (DSSs) in as-received and aged conditions was investigated between room temperature and 500 degrees C. The pronounced cyclic hardening observed in as-received samples between 200 and 475 degrees C is associated with the activation of dynamic strain aging (DSA) in the ferritic phase. On the other hand, during the entire fatigue life aged samples only show a cyclic softening behavior that could be related to the demodulation of the spinodal decomposition in the ferrite phase. It is worthwhile to point out that despite the manifestation of DSA in as-received samples at intermediate temperatures and the presence of spinodal decomposition in aged samples no influence of these phenomena on the fatigue lifetime was observed. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：434 / 439

页数：6

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