Effect of high anodic polarization on the passive layer properties of superduplex stainless steel friction stir welds at different chloride electrolyte pH values and temperatures

2019 ◽  
Vol 26 (6) ◽  
pp. 710-721 ◽  
Author(s):  
L. A. Santa-Cruz ◽  
G. Machado ◽  
A. A. Vicente ◽  
T. F. C. Hermenegildo ◽  
T. F. A. Santos
Keyword(s):  
Stainless Steel ◽  
Anodic Polarization ◽  
Passive Layer ◽  
Friction Stir ◽  
Ph Values ◽  
Chloride Electrolyte ◽  
Superduplex Stainless Steel ◽  
Electrolyte Ph

Corrosion Evaluation of Duplex and Superduplex Stainless Steel Friction Stir Welds Using Potentiodynamic Measurements and Immersion Tests in Chloride Environments

2018 ◽  
Vol 8 (1) ◽  
pp. 32-44 ◽  
Author(s):  
Larissa A. Santa Cruz ◽  
Igor J. Marques ◽  
Severino L. Urtiga Filho ◽  
Tahiana F. C. Hermenegildo ◽  
Tiago F. A. Santos
Keyword(s):  
Stainless Steel ◽  
Friction Stir ◽  
Corrosion Evaluation ◽  
Superduplex Stainless Steel

scholarly journals Strength Enhancement of Superduplex Stainless Steel Using Thermomechanical Processing

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1094
Author(s):  
M. A. Lakhdari ◽  
F. Krajcarz ◽  
J. D. Mithieux ◽  
H. P. Van Landeghem ◽  
M. Veron
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Thermomechanical Processing ◽  
Tensile Tests ◽  
Image Correlation ◽  
Strength Enhancement ◽  
Industrial Material ◽  
Superduplex Stainless Steel ◽  
The Impact ◽  
Strength Improvement

The impact of microstructure evolution on mechanical properties in superduplex stainless steel UNS S32750 (EN 1.4410) was investigated. To this end, different thermomechanical treatments were carried out in order to obtain clearly distinct duplex microstructures. Optical microscopy and scanning electron microscopy, together with texture measurements, were used to characterize the morphology and the preferred orientations of ferrite and austenite in all microstructures. Additionally, the mechanical properties were assessed by tensile tests with digital image correlation. Phase morphology was not found to significantly affect the mechanical properties and neither were phase volume fractions within 13% of the 50/50 ratio. Austenite texture was the same combined Goss/Brass texture regardless of thermomechanical processing, while ferrite texture was mainly described by α-fiber orientations. Ferrite texture and average phase spacing were found to have a notable effect on mechanical properties. One of the original microstructures of superduplex stainless steel obtained here shows a strength improvement by the order of 120 MPa over the industrial material.

scholarly journals Ferrite content meter analysis for delta ferrite evaluation in superduplex stainless steel

2018 ◽  
Vol 7 (3) ◽  
pp. 366-370 ◽  
Author(s):  
Cesar G. Camerini ◽  
Vitor Manoel A. Silva ◽  
Iane A. Soares ◽  
Rafael Wagner F. Santos ◽  
Julio Endress Ramos ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Ferrite Content ◽  
Delta Ferrite ◽  
Superduplex Stainless Steel

Improving Wear Resistance of AISI 316LN Austenitic Stainless Steel Using Friction Stir Processing

2015 ◽  
Vol 787 ◽  
pp. 421-425
Author(s):  
A. Vignesh ◽  
V.G. Vijay Prakaash ◽  
A.K. Lakshminarayanan
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Austenitic Stainless Steel ◽  
Friction Stir Processing ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Friction Stir ◽  
Pin On Disc ◽  
Metal Microstructure ◽  
Equiaxed Grains

An attempt is made to modify the surface metallurgically and enhance the wear resistance of AISI 316LN austenitic stainless steel using friction stir processing. Friction stir welding tools made up of tungsten based alloy with pin and pinless configuration was used. Fine equiaxed grains were observed in the friction stir processed zone irrespective of tool configuration used. Dry sliding wear resistance was evaluated using pin-on-disc wear tester and it is found that, the friction stir processed zone showed superior wear resistance compared to the base metal. Microstructure, micro hardness, and worn surfaces were used to correlate the results obtained.

Study of deleterious phase precipitation under continuous cooling of superduplex stainless steel UNS S32750

2012 ◽  
Vol 28 (3) ◽  
pp. 295-302 ◽  
Author(s):  
J M Pardal ◽  
S S M Tavares ◽  
M P Cindra Fonseca ◽  
M R da Silva ◽  
M L R Ferreira
Keyword(s):  
Stainless Steel ◽  
Phase Precipitation ◽  
Continuous Cooling ◽  
Superduplex Stainless Steel
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