| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Steels for Sustainable Development III
|
| Presentation Title |
Development of Fe-10Ni Based Steel for Liquid Hydrogen Storage |
| Author(s) |
Hyo Joo Han, Hyun Wook Lee, Min-Ho Park, Hyeong-Sub So, Jeongho Han |
| On-Site Speaker (Planned) |
Hyo Joo Han |
| Abstract Scope |
The pursuit of carbon neutrality has received considerable interest in liquid hydrogen (LH2) energy. Hence, it is essential to search for stable metallic container materials aimed at LH2 storage. While explicit standards for alloys used in such containers remain undetermined, austenitic stainless steel is considered an excellent candidate due to its superior mechanical properties at cryogenic temperatures and resistance to hydrogen embrittlement. However, the high cost of austenitic stainless steel due to significant Ni (> 10 wt.%) and Cr (> 16 wt.%) content hinders mass production, necessitating the search for alternative materials balancing reasonable cost and mechanical response. This study introduces Fe-10Ni-XMn-0.025C martensitic steel development, optimized for superior cryogenic toughness and resistance to hydrogen embrittlement through the quenching-lamellarizing-tempering (QLT) process, forming a structure of tempered martensite and retained austenite. The presence of fine retained austenite enables high toughness of over 200 J at -253 °C. |