| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in Materials and Systems for a Hydrogen Economy
|
| Presentation Title |
Hydrogen Embrittlement in Micro-Alloyed Ultra High Strength Press Hardening Steel (PHS) |
| Author(s) |
Seokhwan Ju, Ho Hyeong Lee, Seawoong Lee, Dong-Woo Suh |
| On-Site Speaker (Planned) |
Seokhwan Ju |
| Abstract Scope |
Press hardening steel (PHS) is the one of advanced high strength steel (AHSS) grade for the diverse components in automobile. However, ultra-high strength of PHSs limits their applications at the extreme environments, because the hydrogen susceptibility dramatically increases as the tensile strength increases. In this context, we explored the possibility of enhancing the resistance to hydrogen embrittlement (HE) in PHS by applying the Nb micro-alloying concept. Despite substantial research on the micro-alloying for mitigating HE, certain aspects remain unsettled. Firstly, the quantitative impact of Nb addition on the levels of diffusible and non-diffusible hydrogen content has been rarely explored. Secondly, the necessity to evaluate HE under both plastic deformation and static loading conditions is underlined considering the miscellaneous application fields. This study suggests the potential of Nb micro-alloying to enhance HE resistance in PHS, addressing the aforementioned issues. |