Effect of Multipass Friction Stir Processing on Mechanical and Corrosion Behavior of 2507 Super Duplex Stainless Steel
| Autor: | Meerambika Mishra, G. Gunasekaran, Bhagwati Prasad Kashyap, A.G. Rao, Nityanand Prabhu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Friction stir processing Evolution Aluminum-Alloy Resistance 02 engineering and technology 01 natural sciences Corrosion Microstructural Characterization Electrochemical Impedance Spectroscopy Passive Film Polarization Ferrite (iron) 0103 physical sciences Ultimate tensile strength Mechanical Properties General Materials Science Strain Rate Superplasticity Super Duplex Stainless Steel Polarization (electrochemistry) Fsp Passive Films Deformation-Behavior 010302 applied physics Austenite Mechanical Engineering Metallurgy Temperature 021001 nanoscience & nanotechnology Microstructure Zr Alloy Dielectric spectroscopy Mechanics of Materials Joints 0210 nano-technology |
| Zdroj: | Journal of Materials Engineering and Performance. 26:849-860 |
| ISSN: | 1544-1024 1059-9495 |
| DOI: | 10.1007/s11665-016-2470-0 |
| Popis: | The microstructure, mechanical properties, and corrosion behavior of 2507 super duplex stainless steel after multipass friction stir processing (FSP) were examined. A significant refinement in grain size of both ferrite and austenite was observed in stir zone resulting in improved yield and tensile strength. Electrochemical impedance spectroscopy and anodic polarization studies in 3.5 wt.% NaCl solution showed nobler corrosion characteristics with increasing number of FSP passes. This was evident from the decrease in corrosion current density, decrease in passive current density, and increase in polarization resistance. Also, the decrease in density of defects, based on Mott-Schottky analysis, further confirms the improvement in corrosion resistance of 2507 super duplex stainless steel after multipass FSP. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink