| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Testing to Understand the Long Term Performance of High Temperature Materials
|
| Presentation Title |
Microstructure and Mechanical Properties of Austenitic Stainless Steel at Extreme Temperatures |
| Author(s) |
Adnan Khan, Vasanth C. Shunmugasamy , Bilal Mansoor |
| On-Site Speaker (Planned) |
Adnan Khan |
| Abstract Scope |
Austenitic stainless steels are extensively employed as centrifugally cast reformer tubes in petrochemical plants. These tubes endure extreme service temperatures of 700°C - 1,000°C under periodic stresses of up to 35 bars. The reformer tubes operate near their metallurgical limits throughout their service life and often experience microstructural degradation. This leads to the premature failure of these tubes, particularly vulnerable to creep and fatigue which are their primary loading during service. In this study, HP40Nb was utilized as the model material to analyze when expose to high temperatures. The as-cast tube materials were aged at 750℃, 850℃ and 950℃ for a total time of 1600 hours. The microstructural and mechanical properties variations were studied with respect to exposure temperature and time and compared with as-cast HP40Nb. The present research explored the correlations between the microstructural changes and the resulting mechanical properties of the alloy system when exposed to extreme temperatures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Other |