Effect of nitrogen on the electrochemical behavior of 301ln stainless steel in h2so4 solutions

Chou, Shyan-Liang; Tsai, Min-Jou; Tsai, Wen‐Ta; Lee, Ju-Tung

doi:10.1016/s0254-0584(97)80275-1

Cited by 15 publications

(12 citation statements)

References 12 publications

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“…These include the local buffering effect of N by formation of either NH 3 , NH 4 + , NO 3 + , nitride, etc., N impending active dissolution, enrichment in passive film, barrier layer, N-Mo synergism, N retarding Cr 23 C 6 precipitation, ferrite and deformationinduced a¢ and e, etc. ( 10,17,[26][27][28]38,39). However, based on the above observation, it can be summarized that the indigenously developed type 301LN stainless steel possesses better corrosion resistance compared to imported grade in chloride environment.…”

Section: Potentiodynamic Anodic Polarization Studiesmentioning

confidence: 99%

“…Mass transit systems all over the world are turning to austenitic metastable stainless steel for railcars to reduce weight, provide high strength and impact safety, and minimize the higher costs for corrosion protection and lifecycle costs (Ref [6][7][8][9][10]. AISI type 301 stainless steels characterized by a metastable structure are fully austenitic (c-phase) in annealed condition but partially transform to martensite during deformation (Ref [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…AISI type 301 stainless steels characterized by a metastable structure are fully austenitic (c-phase) in annealed condition but partially transform to martensite during deformation (Ref [6][7][8]. In the annealed state, these steels show low yield strength (300 MPa); however, significant strengthening (1500 MPa) can be achieved by cold plastic deformation (Ref [8][9][10]. Furthermore, addition of N provides higher volume fractions of martensite during cold rolling and, consequently, form smaller austenite grains on annealing (Ref 9,10).…”

Section: Introductionmentioning

confidence: 99%

“…In the annealed state, these steels show low yield strength (300 MPa); however, significant strengthening (1500 MPa) can be achieved by cold plastic deformation (Ref [8][9][10]. Furthermore, addition of N provides higher volume fractions of martensite during cold rolling and, consequently, form smaller austenite grains on annealing (Ref 9,10). This transformation affects the mechanical properties significantly, from large ductility after annealing to high strength after cold rolling ( Ref 8,11).…”

Section: Introductionmentioning

confidence: 99%

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Pitting and Intergranular Corrosion Resistance of AISI Type 301LN Stainless Steels

Ningshen

Mudali

2009

J. of Materi Eng and Perform

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The pitting and intergranular corrosion (IGC) resistance of AISI type 301LN stainless steels were evaluated using ASTM methods, anodic polarization, and electrochemical impedance techniques. The IGC results indicated that the microstructure of the samples after sensitization heat treatment at 675°C for 1 h shows step or dual structure for both imported and indigenous materials indicating insignificant Cr 23 C 6 precipitation. The results of immersion tests in boiling 6% copper sulfate + 16% sulfuric acid + copper solution for 24 h followed by the bend test (ASTM A262 Practice-E method) indicated no crack formation in any of the tested specimens. Pitting corrosion resistance carried out in 6% FeCl 3 solution at different temperatures of 22 ± 2 and 50 ± 2°C (ASTM G 48) up to the period of 72 h revealed pitting corrosion attack in all the investigated alloys. The potentiodynamic anodic polarization results in 0.5 M NaCl revealed variation in passive current density and pitting potential depending on the alloy chemistry and metallurgical condition. The passive film properties studied by electrochemical impedance spectroscopy (EIS) correlated well with the polarization results. The x-ray diffraction (XRD) results revealed the presence of austenite (c) and martensite (a¢) phases depending on the material condition. The suitability of three indigenously developed AISI type 301LN stainless steels were compared with imported type 301LN stainless steel and the results are highlighted in this article.

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Section: Potentiodynamic Anodic Polarization Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pitting and Intergranular Corrosion Resistance of AISI Type 301LN Stainless Steels

Ningshen

Mudali

2009

J. of Materi Eng and Perform

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“…Most IT is well known that duplex stainless steels (DSSs) are importantly, the alloying of nitrogen into SSs can greatly generally more resistant to stress corrosion cracking (SCC) improve passivation behavior and increase pitting corrosion than single-phase austenitic grade stainless steels in chloride resistance [11,[16][17][18][19] of SSs in aqueous environments. The particontaining solutions.…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrogen content on the environmentally-assisted cracking susceptibility of duplex stainless steels

Liou

Tsai

2003

Metall Mater Trans A

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The effect of nitrogen content on the stress corrosion cracking (SCC) behavior of 22 pct Cr duplex stainless steel (DSS) in chloride solutions was investigated in this study. Slow strain rate testing (SSRT) was employed to evaluate the SCC susceptibility. The experimental results showed that the tensile strength and ductility of 22 pct Cr DSS increased with increasing amount of nitrogen (in the range of 0.103 to 0.195 wt pct). Slow strain rate testing results indicated that 22 pct Cr DSSs were resistant to SCC in 3.5 wt pct NaCl solution at 80 ЊC. However, environmentally assisted cracking occurred in 40 wt pct CaCl 2 solution at 100 ЊC and in boiling 45 wt pct MgCl 2 solution at 155 ЊC, respectively. The effects of environment and nitrogen content in DSS on the cracking susceptibility are discussed in this article. Selective dissolution of ferrite phase was found to participate in the SCC process for tests in CaCl 2 solution. At temperatures above 80 ЊC, dynamic strain aging was found to occur in various environments at a strain beyond plastic deformation.

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A short review on the role of alloying elements in duplex stainless steels

Han

Liu

et al. 2022

Tungsten

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Effect of nitrogen on the electrochemical behavior of 301ln stainless steel in h2so4 solutions

Cited by 15 publications

References 12 publications

Pitting and Intergranular Corrosion Resistance of AISI Type 301LN Stainless Steels

Pitting and Intergranular Corrosion Resistance of AISI Type 301LN Stainless Steels

Effect of nitrogen content on the environmentally-assisted cracking susceptibility of duplex stainless steels

A short review on the role of alloying elements in duplex stainless steels

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