Effect of Rare Earth on the Inclusions and Pitting Resistance of Austenitic Stainless Steel

Xiao Liu; Yu Bo

doi:10.4028/www.scientific.net/AMR.718-720.29

Paper Titles

Alloying Element Ta Effect on Microstructure of Co-Al-W Superalloy by Vacuum Arc Melting
p.10

Mechanical Properties Analysis of TiN/TiAlN Coatings after Annealing
p.14

Growth of Highly C-Axis Oriented AlN Films at Water Cooling Condition
p.20

Thermodynamic Analysis and Observation of Inclusions in RE-Austenitic Stainless Steel
p.25

Effect of Rare Earth on the Inclusions and Pitting Resistance of Austenitic Stainless Steel
p.29

Effects of RE on Inclusions and Mechanical Properties of H13 Die Steel
p.33

Stable Structures of Donor-Acceptor-Donor Trimer Codopants in 4H-SiC
p.37

Changes of Structure and Magnetic Properties of Fe₆₆Co₂₄Si₃B₇ Amorphous Alloy under Heat Treatment
p.42

Description of Dipole Moment Coupling Depending on Time Using Catastrophe Theory in Metallic Nanoparticles
p.47

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 718-720Effect of Rare Earth on the Inclusions and Pitting...

Effect of Rare Earth on the Inclusions and Pitting Resistance of Austenitic Stainless Steel

Abstract:

The anodic polarization curves of 21Cr-11Ni austenitic stainless steels with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods. The effect of RE on pitting corrosion resistance of 21Cr-11Ni stainless steels has been studied by the metallographic examination. The results show that sulfide and other irregular inclusions are modified to round or oval-shaped RE₂O₂S and RES after adding RE to 21Cr-11Ni stainless steesl. RE makes sulfide, and other irregular inclusions change to dispersed round or oval-shaped RE inclusions, effectively inhibits the occurrence of pitting corrosion, thereby enhancing the corrosion resistance of 21Cr-11Ni austenitic stainless steels.