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

被引：9
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.
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页数：11
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