About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Effects of High Temperature Hydrogen on Microstructure and Creep Deformation in Fe-Cr-Ni Alloys |
| Author(s) |
Satoru Kobayashi |
| On-Site Speaker (Planned) |
Satoru Kobayashi |
| Abstract Scope |
Hydrogen is expected as a key issue in a wide range of technologies towards carbon neutrality (CN) goals. Hydrogen will be used at high temperatures in some CN technologies such as solid oxide type high temperature water electrolysis, hydrogen gas turbines, hydrogen engines, and hydrogen reduction steelmaking and so on. High temperature hydrogen is known to cause decarburization, methane bubble formation, and to enhance creep deformation in steels and alloys. Little information is, however, available on how high temperature hydrogen affects in stainless steels and Ni based alloys which are candidates for high temperature hydrogen applications. In the present paper, we will introduce our recent results on (1) microstructural change in Fe-Ni-Cr alloys with a wide range of the Fe/Ni ratio under a static high-temperature hydrogen atmosphere, and (2) hydrogen promoting creep deformation in a commercial austenitic stainless steel obtained by creep tests with hollow specimens. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Environmental Effects, Characterization |