|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Effects of Test Orientation on Environmentally-assisted Cracking of 5xxx Series Aluminum Alloys
||Yang Liu, John J Lewandowski
|On-Site Speaker (Planned)
5xxx series Aluminum-Magnesium alloys are solid solution strengthened by Mg and used in a variety of applications due to their good strength, weldability and corrosion resistance. However, thermal exposures for sufficient time may sensitize the material to corrosion and/or environmentally-assisted cracking (EAC) via the precipitation of Mg-rich phases at grain boundaries. In this work, the effects of sensitization treatments on EAC have been determined for laboratory-sensitized 5xxx alloys. Fracture toughness tests were conducted in humid air and/or 0.6M NaCl solution on laboratory-sensitized alloys both in Longitudinal-Transverse (L-T) direction and Short-Transverse (S-T) direction, including experiments on thinner (e.g. 6mm-thick) plate. Changes in crack growth response due to laboratory-sensitization will be presented along with SEM fractography.
||Aluminum, Environmental Effects, Mechanical Properties