Corrosion Resistance of Laser Welded Sheets of Stainless Steel 316l

Lisiecki, A.; Kurc-Lisiecka, A.; Topolska, Santina

doi:10.54684/ijmmt.2022.14.3.171

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…The degree of corrosion resistance is not the same for all austenitic steels and depends on the proportion of Cr and Ni. Among the most dangerous types of local corrosion that austenitic steels undergo are intergranular, pitting and stress corrosion cracking (Dobrzański, 2009, Lisiecki et al, 2019. Intergranular corrosion is corrosion occurring at the boundaries of metal grains or in areas adjacent to them.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Cold-Rolled Aisi 301 Stainless Steel

Kurc-Lisiecka,

Lisiecki

2023

IJMMT

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: The performed investigations concerned on the effect of cold rolling on the corrosion behavior and microstructure of austenitic AISI 301 stainless steel. Samples of steel strip were cold-rolled within the degree of deformation 30%, 50% and 80%. The corrosion resistance test was examined using gravimetric and potentiodynamic method. Corrosion tests were conducted in acidic and alkaline corrosive environments. A light microscope and a scanning electron microscope were used to observe the surface morphology of the samples after corrosion testing. Corrosion tests by gravimetric method showed that investigated steel is not resistant to corrosion in 0.5N H2SO4 solution, while no significant weight loss was observed in artificial seawater solution (0.5N NaCl). Based on potentiodynamic tests carried out in 0.5N NaCl solution, it was found that the pitting corrosion resistance of the tested cold-rolled steel AISI 301 decreases with an increase in the degree of plastic deformation in the range of 30% to 80%. However, a decrease in the corrosion potential and an increase in the current density were observed on the polarisation curves. The propensity of the steel to initiation and propagation pitting was found to increase both with increasing degree of deformation and the associated increase in the volume proportion of martensite- in the material structure. The occurring of martensite- ’ in the investigated steel was confirmed by X-ray methods.

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Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Cold-Rolled Aisi 301 Stainless Steel

Kurc-Lisiecka,

Lisiecki

2023

IJMMT

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Microstructure and Properties of Laser-Welded Butt Joints of X2crtinb18 Steel

Lisiecki¹,

Kurc-Lisiecka²,

Pakieła³

et al. 2023

IJMMT

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The process of autogenous laser welding of stainless steel X2CrTiNb18 was investigated. The Yb:YAG disk laser was used in the study for welding of 1.5mm thick butt joins. The influence of basic laser welding parameters on the joint quality, fusion zone geometry, microhardness distribution across the butt joint, structure and microstructure of fusion zone (FZ) and heat affected zone (HAZ) was studied and determined. The quality level of the test joints was determined according to the PN-EN ISO 13919-1 standard. The chemical composition of the base metal was determined by spark emission spectroscopy. Results of the study have shown that laser welding parameters have a significant influence on the quality of butt joints. However, it is possible to produce joints that meet the high requirements and criteria of quality. The width of HAZ of the butt joints welded in the investigated range of parameters was narrow and did not exceed 0.2 mm. It was found that the most common imperfections of the analysed joints are concavity of the weld face and insufficient penetration. The HAZ region of joints is characterized by mainly ferritic microstructure with complex carbides precipitates. In turn, the fusion zone is dominated by a ferritic microstructure but also precipitates were observed, which were identified as fine dispersion carbides. Hardness of the base metal is round 160÷170HV0.3. A tendency to increase in hardness in the HAZ and FZ was observed. The maximum hardness measured in HAZ was approx. 220HV0.3, while in the FZ 190HV0.3.

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Corrosion Resistance of Laser Welded Sheets of Stainless Steel 316l

Cited by 2 publications

References 11 publications

Corrosion Resistance of Cold-Rolled Aisi 301 Stainless Steel

Corrosion Resistance of Cold-Rolled Aisi 301 Stainless Steel

Microstructure and Properties of Laser-Welded Butt Joints of X2crtinb18 Steel

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