Influence of σ-phase on mechanical properties and corrosion resistance of duplex stainless steels

被引：191

作者：

Lopez, N ^{[1
]}

Cid, M ^{[1
]}

Puiggali, M ^{[1
]}

机构：

[1] Univ Bordeaux 1, Mecan Phys Lab, CNRS, URA 867, F-33405 Talence, France

来源：

CORROSION SCIENCE | 1999年 / 41卷 / 08期

关键词：

intergranular corrosion; stress corrosion; duplex stainless steel;

D O I：

10.1016/S0010-938X(99)00009-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to appraise the influence of sigma-phase on the behaviour of duplex stainless steels, two tests are performed. The first one is the double loop electrochemical potentiodynamic reactivation (DLEPR) test that indicates the degree of sensitisation to intergranular corrosion. The second one is the slow strain rate test (SSRT) that enables us to relate the degree of sensitisation to stress corrosion cracking. A metallurgical study is also performed on two duplex stainless steels of grade UNS S31803. Sensitisation is carried out by several heat treatments at 675 degrees C or 900 degrees C. The influence of sigma-phase is clearly shown on the mechanical properties and the corrosion resistance. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1615 / 1631

页数：17

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