Intergranular corrosion evaluation of friction stir welded AISI 410S ferritic stainless steel

被引：13

作者：

Caetano, Gerbson de Queiroz ^{[1
]}

Silva, Cleiton Carvalho ^{[1
]}

Motta, Marcelo Ferreira ^{[1
]}

Miranda, Helio Cordeiro ^{[1
]}

Farias, Jesualdo Pereira ^{[1
]}

Bergmann, Luciano Andrei ^{[2
]}

dos Santos, Jorge F. ^{[2
]}

机构：

[1] Univ Fed Ceara, Dept Mat & Met Engn, Campus Pici,Bldg 1080, BR-60440554 Fortaleza, Ceara, Brazil

[2] Helmholtz Zentrum Geesthacht, Inst Mat Res, Mat Mech, Solid State Joining Proc, Max Planck Str 1, D-21502 Geesthacht, Schleswig Holst, Germany

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2019年 / 8卷 / 02期

关键词：

Stainless steel; Polarization; Intergranular corrosion; Welding; HEAT-AFFECTED ZONE; WELDING PARAMETERS; SENSITIZATION; PRECIPITATION; TEMPERATURE; RESISTANCE;

D O I：

10.1016/j.jmrt.2019.01.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study aimed to investigate the susceptibility of AISI 410S ferritic stainless steel to intergranular corrosion when friction stir welded (FSW) using the double-loop electrochemical potentiokinetic reactivation (DL-EPR) test. The highest values obtained for the ratio between the reactivation current (I-r) and the activation current (I-a) were found at the top of the advancing side for the two conditions tested. The steel for Condition 1, which was welded with a rotational speed of 800 rpm and high heat input, gave I-r/I-a peaks 60% greater than Condition 2, which was welded with a rotational speed of 450 rpm and a lower heat input. These peaks were attributed to the presence of precipitates with high chromium content of about 21%. In these FSW welds the sensitization of the AISI 410S steel was detected by the electrochemical test according to the intensity of the undesirable phases formed. The DL-EPR test was clearly able to quantify the different levels of sensitization in the FSW welds according to the energy used by the process parameters. (C) 2019 The Authors. Published by Elsevier B.V.

引用

页码：1878 / 1887

页数：10

共 40 条

[31] Effect of friction welding parameters on mechanical and metallurgical properties of ferritic stainless steel [J].