|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Sensitization Effects on Tensile Behavior in 5XXX Series Aluminum Alloys: Environmentally Enhanced Cracking
||Benjamin Palmer, John J Lewandowski
|On-Site Speaker (Planned)
The desirability of 5XXX series Aluminum-Magnesium alloys for Naval use is tempered by their propensity to sensitize in the application environment. A contributor to this is the β phase (Al3Mg2) and non-equilibrium variants that preferentially precipitate at grain boundaries upon thermal exposure. These phases are anodic with respect to the matrix and can corrode and/or provide a path for environmentally enhanced cracking. This cracking is an area of active interest, as several types of environmental cracking mechanisms have recently been discovered in 5XXX alloys. This study seeks to expound upon them via interrupted tensile tests at different strain rates, microscopy, and tomography to observe how damage development in tensile specimens is affected by sensitization in samples from the Short Transverse (ST) direction of 5083-H131 rolled plates.
||Planned: Supplemental Proceedings volume