| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Testing to Understand the Long Term Performance of High Temperature Materials
|
| Presentation Title |
High-throughput Creep Testing for Additively Manufactured 316H SS by Using Microstructurally-graded Specimen |
| Author(s) |
John Snitzer, Xiaoyuan Lou |
| On-Site Speaker (Planned) |
John Snitzer |
| Abstract Scope |
This study demonstrates microstructurally-graded specimen can be used as a high-throughput approach to establish process-microstructure-creep relationship for additively manufactured (AM) materials. Through the gradient manufacturing, multiple microstructures, also connecting to the processing conditions, can be produced in a single sample. Using digital image correlation (DIC), local strain tracking during high temperature creep testing allows for individual parameter regions to be probed for creep response. The obtained results are bench-marked with the standard creep test using dog-bone specimens with uniform microstructure. Microstructural evolution during creep testing is investigated to determine the role of dislocation cellular structures on the creep response. The thermal stability of the cellular structures in a zero-stress condition was investigated to isolate the impact creep stress on the microstructural evolution. This work discusses the microstructurally-gradient testing development and the microstructural variations caused by laser parameter modification, creep stress, and thermal aging during creep. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |