| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Enhanced Understanding of the Protocol for Characterizing Environment Assisted Cracking and Justification for a Modified Testing Standard |
| Author(s) |
James Burns, Zach Harris |
| On-Site Speaker (Planned) |
James Burns |
| Abstract Scope |
Substantial literature indicates that the applied loading rate (dK/dt) can affect environment-assisted cracking (EAC) behavior. Recent studies have systematically evaluated the dK/dt dependencies and mechanistic factors governing the impact of applied dK/dt on EAC. Specifically, slow-rising stress intensity (K) framework was utilized to measure EAC kinetics over dK/dt ranging from 0.2 to 20 MPa√m/hr for various alloys and environments. Results demonstrate that for a wide range of material, environments, and severities that a slow-rising K testing approach will result in conservative characterization of the EAC susceptibility. This finding has critical implications for the standardization community. Specifically, EAC susceptibility can be quantified using LEFM based slow rising K testing to generated conservative/bounding material properties in a fraction of the time required by incumbent standardized testing approaches. This talk will detail these findings and comment on the content and format of a new ASTM EAC standard currently being developed by the authors. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Environmental Effects, Characterization |