About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Advanced Materials for Harsh Environments
|
Presentation Title |
Grain Boundary Engineering to Improve Austenitic Stainless Steels Stress Corrosion Cracking Behavior in Boiling Saturated Magnesium Chloride Solutions |
Author(s) |
Osama M. Alyousif |
On-Site Speaker (Planned) |
Osama M. Alyousif |
Abstract Scope |
Grain Boundary Engineering (GBE) through various thermomechanical processes on Type 304 Austenitic Stainless Steel was used to enhance the performance of the steel in boiling saturated magnesium chloride solutions. The microstructure development showed increased fractions of beneficial grain boundaries such as ∑3 and ∑9 in addition to changes in grain sizes compared to solution annealed typical microstructure. The stress corrosion cracking tests in the corrosive environments have showed improved failure times for the different thermomechanical processes used compared to the solution annealed sample tested at same conditions. The microstructure analysis used by metallographic imaging and electron backscatter diffraction helped in understanding the materials behavior and showed a correlation between special boundaries development and materials ability to resist harsh environments. |