Improvement of sensitization and intergranular corrosion of AISI type 304L stainless steel through thermo-mechanical treatment

被引：13

作者：

Shit, Gopinath ^{[1
,2
]}

Mariappan, K. ^{[3
]}

Ningshen, S. ^{[1
,2
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Met & Mat Grp, CSTD, Kalpakkam 603102, Tamil Nadu, India

[2] Homi Bhaba Natl Inst, Training Sch Complex, Mumbai 400094, India

[3] Indira Gandhi Ctr Atom Res, Mech Met Div, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India

来源：

CORROSION SCIENCE | 2023年 / 213卷

关键词：

A; Stainless steel; B; Electrochemical calculation; Weight loss; C; Acid corrosion; GRAIN-BOUNDARY-CHARACTER; ANNEALING TWINS; SIZE; PRECIPITATION; RESISTANCE; EVOLUTION; BEHAVIOR; EBSD;

D O I：

10.1016/j.corsci.2023.110975

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, solution annealed AISI type 304 L stainless steel (SS) was thermo-mechanically processed (TMP) by introducing different cold-rolled 20 and 40 percentages, followed by annealing at 900 degrees C and water quenching. Sensitization was carried out by heat treatment for 24 h at 675 degrees C. The degree of sensitization (DOS) was measured by the electrochemical double loop potentiokinetic reactivation (DL-EPR) technique, indicating high DOS (12.5%) for the as-received specimen. The grain boundary engineering (GBE) by TMP treatment substantially lowered the DOS (7.1%) and resistance against intergranular corrosion (IGC) in a boiling nitric acid medium.

引用

页数：11