Intergranular corrosion behavior associated with delta-ferrite transformation of Ti-modified Super304H austenitic stainless steel

被引：61

作者：

Bai, Guanshun ^{[1
]}

Lu, Shanping ^{[1
]}

Li, Dianzhong ^{[1
]}

Li, Yiyi ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci SYNL, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2015年 / 90卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Stainless steel; Electrochemical calculation; SEM; TEM; Intergranular corrosion; 304-STAINLESS-STEEL DISSOLUTION PROCESS; HEAT-RESISTANT STEEL; SIGMA-PHASE; CRACKING SUSCEPTIBILITY; GRAIN-SIZE; SENSITIZATION; PRECIPITATION; MECHANISM; EVOLUTION; SITE;

D O I：

10.1016/j.corsci.2014.10.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A double loop electrochemical potentiokinetic reactivation (DL-EPR) test was conducted to investigate the relationship between the evolution of delta-ferrite and the intergranular corrosion (IGC) of Ti-modified Super304H, which was aged at 650 degrees C for 4-500 h. Scanning electron microscopy and transmission electron microscopy were adopted to analyze the evolution of delta-ferrite. The results indicated that a higher fraction of delta-ferrite with poor stability increased the IGC sensitisation of Ti-modified Super304H. Moreover, the self-healing of the sensitisation of Ti-modified Super304H occurred after 48 h due to the diffusion of chromium atoms mainly from the adjacent primary austenite rather than the delta-ferrite. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：347 / 358

页数：12

共 56 条

[1] Correlation between the degree of sensitization and stress corrosion cracking susceptibility of type 304H stainless steel [J].

Abou-Elazm, A. ;

Abdel-Karim, R. ;

Elmahallawi, I. ;

Rashad, R. .

CORROSION SCIENCE, 2009, 51 (02) :203-208

[2] Double loop electrochemical potentiokinetic reactivation test optimization in checking of duplex stainless steel intergranular corrosion susceptibility [J].

Amadou, T ;

Braham, C ;

Sidhom, H .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2004, 35A (11) :3499-3513

[3]

[Anonymous], 2006, ISO12732

[4]

[Anonymous], 2010, A26210 ASTM

[5] DEIS assessment of AISI 304 stainless steel dissolution process in conditions of intergranular corrosion [J].

Arutunow, A. ;

Darowicki, K. .

ELECTROCHIMICA ACTA, 2008, 53 (13) :4387-4395

[6] Electrical mapping of AISI 304 stainless steel subjected to intergranular corrosion performed by means of AFM-LIS in the contact mode [J].

Arutunow, A. ;

Darowicki, K. ;

Tobiszewski, M. T. .

CORROSION SCIENCE, 2013, 71 :37-42

[7] DEIS evaluation of the relative effective surface area of AISI 304 stainless steel dissolution process in conditions of intergranular corrosion [J].

Arutunow, A. ;

Darowicki, K. .

ELECTROCHIMICA ACTA, 2009, 54 (03) :1034-1041

[8] Determination of susceptibility to intergranular corrosion and electrochemical reactivation behaviour of AISI 316L type stainless steel [J].

Aydogdu, G. H. ;

Aydinol, M. K. .

CORROSION SCIENCE, 2006, 48 (11) :3565-3583

[9] Microstructural and electrochemical characterisation of heat-treated 347 stainless steel with different phases [J].

Chandra, K. ;

Kain, Vivekanand ;

Tewari, R. .

CORROSION SCIENCE, 2013, 67 :118-129

[10]

Cíhal V, 2001, ELECTROCHIM ACTA, V46, P3867

← 1 2 3 4 5 6 →