Influence of cold work on electrochemical behavior of 316L ASS in PEMFC environment

Tandon, Vipin; Patil, Awanikumar P.; Rathod, Ramesh Chandra; Shukla, Sourabh

doi:10.1088/2053-1591/aaaf27

Cited by 18 publications

(7 citation statements)

References 36 publications

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“…It can be observed that all the plots show unfinished semicircular arc with varying diameter. The diameter of the plots indicates the resistance of the film; more the diameter of the plots, more will the resistance of the passive film and consequently more corrosion resistance [30]. It can be observed from Fig.…”

Section: Tensile Measurementmentioning

confidence: 84%

Effect of Heat Input on the Microstructural, Mechanical, and Corrosion Properties of Dissimilar Weldment of Conventional Austenitic Stainless Steel and Low-Nickel Stainless Steel

Tandon

Thombre

Patil

et al. 2020

Metallogr. Microstruct. Anal.

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In the present investigation, an attempt has been made to investigate the replacement compatibility of conventional austenitic stainless steel (316L) with low-Ni austenitic stainless steel (201) by employing their dissimilar welding using gas tungsten arc welding technique with varying heat input. The effects of heat input on the microstructural, mechanical, and corrosion properties were studied. The result depicts the balanced austenite/ferrite content in the fusion zone for both the heat inputs. The low heat input process, which results in a faster cooling rate, demonstrates higher tensile strength and microhardness. Similarly, the pitting corrosion resistance of the fusion zone demonstrates better properties on the low heat input process attributed to the lesser dendritic length and lesser interdendritic arm spacing.

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Section: Tensile Measurementmentioning

confidence: 84%

Effect of Heat Input on the Microstructural, Mechanical, and Corrosion Properties of Dissimilar Weldment of Conventional Austenitic Stainless Steel and Low-Nickel Stainless Steel

Tandon

Thombre

Patil

et al. 2020

Metallogr. Microstruct. Anal.

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“…It can be observed that all the nyquist plots show unfinished semi-circle arc with varying diameter. However, the difference in diameter of the plots indicates difference in corrosion resistance; larger the diameter of the plots, more is the corrosion resistance and vice versa (Tandon et al , 2018).…”

Section: Resultsmentioning

confidence: 99%

“…Element C 1 is the electric double layer and C 1 and R 1 corresponds to the properties of outer porous film while CPE and R ct corresponds to the pseudo-capacitance and charge transfer resistance of passive film, respectively. In case of non-ideal capacitance, the CPE is used instead of C dl to account for surface heterogeneity (Tandon et al , 2018).…”

Section: Resultsmentioning

confidence: 99%

Enhanced corrosion resistance of Cr-Mn ASS by low temperature salt bath nitriding technique for the replacement of convectional Cr-Ni ASS

Tandon

Patil

Rathod

2019

ACMM

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Purpose The purpose of this paper is to enhance the corrosion resistance of Cr-Mn austenitic stainless steel (ASS) via low temperature salt bath nitriding and to replace the convectional Cr-Ni ASS with newly developed enhanced corrosion resistive Cr-Mn ASS. Design/methodology/approach The low temperature salt bath nitriding was performed on Cr-Mn ASS at 450°C for 3 h in potassium nitrate salt bath. Findings The present paper compares the corrosion resistance of salt bath nitrided Cr-Mn ASS with convectional Cr-Ni ASSs (316 L and 304 L ASSs) in 3.5 per cent NaCl by electrochemical techniques. The electrochemical impedance spectroscopy result shows the increase in film resistance and potentiodynamic polarization results show the enhanced corrosion resistance of nitrided Cr-Mn ASS, which is almost equivalent to that of 316 L and 304 L ASSs. This is attributed to the formation of nitrogen supersaturated dense nitride layer. The present results therefore suggest that the nitrided Cr-Mn ASS may replace costly convectional Cr-Ni ASSs for commercial and industrial applications. Originality/value Ever-increasing price of nickel (Ni) is driving the industries to use Ni-free or low-Ni austenitic stainless steels (ASSs). But its corrosion resistance is relatively poor as compared to conventional Cr-Ni ASSs. However, its corrosion resistance can be improved by nitriding. The low temperature salt bath nitriding of Cr-Mn ASS and its electrochemical behavior in 3.5 per cent NaCl has not been studied. The present research paper is beneficial for industries to use low cost Cr-Mn, enhance its corrosion resistance and replace the use of costly conventional Cr-Ni ASSs.

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“…The corrosion rate is also proportional to the amount of αʹ-martensite phase formed, which, in turn, is directly proportional to the degree of deformation. Several studies [12][13][14][15][16] have reported a similar behaviour when the austenitic steels are subjected to cold rolling.…”

Section: Corrosion Behaviourmentioning

confidence: 71%

“…Tandon 11 ,et al reported the influence of martensite content and dislocation density over the passivating film in an acidic medium of coldworked 316L austenitic steel. Tandon 12 , et al studied the influence of cold working on the electrochemical behaviour of 316L steel and illustrated that with increased cold working, the corrosion rate decreases, which can be ascribed to martensitic transformation and increased dislocations density during cold deformation of the material. Kurc 13 , et al, and Monrrabal 14 , et al reported the influence of cold rolling over 304 austenitic steel and reported, with increasing deformation, corrosion potential value decreases resulting in rapid corrosion of steel.…”

Section: Introductionmentioning

confidence: 99%

Phase transformation, Mechanical Properties and Corrosion Behavior of 304L Austenitic Stainless Steel Rolled at Room and Cryo Temperatures

et al. 2021

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The present work investigates the effect of rolling (90% thickness reduction) on phase transformation, mechanical properties, and corrosion behaviour of 304L-austenitic stainless steel through cryorolling and room temperature rolling. The processed steel sheets were characterised through X-ray diffraction (XRD), electron backscattered diffraction (EBSD), and vibrating sample magnetometer (VSM). The analysis of XRD patterns, EBSD scan, and vibrating sample magnetometer results confirmed the transformation of the austenitic phase to the martensitic phase during rolling. Cryorolling resulted in improved tensile strength and microhardness of 1808 MPa and 538 VHN, respectively, as compared to 1566 MPa and 504 VHN for room temperature rolling. The enhancement in properties of cryorolled steel is attributed to its higher dislocation density compared to room temperature rolled steel. The corrosion behaviour was assessed via linear polarisation corrosion tests. Corrosion resistance was found to decrease with increasing rolling reduction in both room temperature rolled and cryorolled specimens.

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Influence of cold work on electrochemical behavior of 316L ASS in PEMFC environment

Cited by 18 publications

References 36 publications

Effect of Heat Input on the Microstructural, Mechanical, and Corrosion Properties of Dissimilar Weldment of Conventional Austenitic Stainless Steel and Low-Nickel Stainless Steel

Effect of Heat Input on the Microstructural, Mechanical, and Corrosion Properties of Dissimilar Weldment of Conventional Austenitic Stainless Steel and Low-Nickel Stainless Steel

Enhanced corrosion resistance of Cr-Mn ASS by low temperature salt bath nitriding technique for the replacement of convectional Cr-Ni ASS

Phase transformation, Mechanical Properties and Corrosion Behavior of 304L Austenitic Stainless Steel Rolled at Room and Cryo Temperatures

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