About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Rate-Dependent Serration Flow and Mechanical Properties of High Manganese Steel at 15 K |
Author(s) |
Taeho Lee, SooYeol Lee, Chetan Singh, YouSub Kim, JunYun Kang, JunHyun Han, Dong-Hyun Lee |
On-Site Speaker (Planned) |
Taeho Lee |
Abstract Scope |
Advancements in liquid nitrogen and hydrogen industries, driven by emission regulations and fossil fuel restrictions, require the liquefaction, transportation, and storage of gases at temperatures between 20 K and 77 K. However, most metals undergo a ductile-to-brittle transition at low temperatures, leading to catastrophic failure with quasi-cleavage fracture. Moreover, discontinuous tensile curves or serrations, indicating abrupt localized deformation, have commonly been observed at ultra-low temperatures of ~20 K. In this study, we extend the exploration of high-manganese steel, focusing on its TWIP deformation mechanism and discontinuous serration flow under various strain rates at liquid hydrogen temperature of 15 K. Tensile tests of high-manganese steel at 15 K with varying strain rates were conducted to: 1) evaluate mechanical properties, 2) investigate changes in serration behavior, and 3) elucidate microstructural mechanisms. The current study discusses the applicability of high manganese steel for liquid hydrogen industry. |
Proceedings Inclusion? |
Planned: |
Keywords |
Iron and Steel, Mechanical Properties, |