| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Mechanisms and Mitigation of Aqueous Corrosion and High-temperature Oxidation
|
| Presentation Title |
Effect of Post Processing on the Corrosion Behavior of Selective Laser Melted Nickel Based Super Alloy in Acidic Environment |
| Author(s) |
Mythreyi Opadhrishta Venkataramana, R Jayaganthan, B K Nagesha |
| On-Site Speaker (Planned) |
Mythreyi Opadhrishta Venkataramana |
| Abstract Scope |
The present study investigates the corrosion behavior of selective laser melted Inconel 718 subjected to post processing. The printed samples are post processed through the treatments such as single ageing, double ageing and shot peening. The surface topographical changes of the different specimen conditions were measured by a non-contact surface profilometer. Optical and scanning electron microscopic imaging revealed the presence of multiple phases evolving during the selective laser melting and the two heat treatments. Potentiodynamic polarization and electrochemical impedance spectroscopy tests were conducted in an acidic environment to examine the corrosion behavior and to correlate with the effects of post processing treatments. The post corrosion imaging was carried out to determine elemental distribution in the pits. This work substantiates the electrochemical mechanisms governing the degradation behavior of selective laser melted and post processed Inconel 718 in acidic environment. |