| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Environments
|
| Presentation Title |
Influence of processing conditions and loading rate on the fracture toughness of 316L welds at cryogenic temperatures |
| Author(s) |
Jake T. Benzing, Nicholas Derimow, Enrico Lucon, Timothy Weeks |
| On-Site Speaker (Planned) |
Jake T. Benzing |
| Abstract Scope |
In the framework of a collaborative project between ASME, NASA, and NIST, quasi-static fracture toughness tests were performed at liquid nitrogen and liquid helium temperatures on precracked SEN(B) specimens extracted from the centers of four separate lots of welded 316L stainless steel plates. Although the plates were produced in accordance with the same specifications from the same material (316L), large differences in fracture toughness have been observed, with the toughest weld exhibiting almost twice the critical toughness of the least tough at 77 K about seven times the critical toughness of the least tough at 4 K. Charpy absorbed energies previously obtained at 77 K for only three of the four welds were found to be strongly linearly correlated with fracture toughness at both test temperatures. Dynamic toughness measurements at impact loading rates were also performed on precracked SEN(B) specimens to elucidate the effects of loading rate. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Joining, |