About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Steels for Sustainable Development IV
|
| Presentation Title |
The Effect of Nitrogen on the Microstructure and Properties of Ultra-High Strength Steels |
| Author(s) |
Allison C. Kosberg, John G. Speer, Emmanuel De Moor |
| On-Site Speaker (Planned) |
Emmanuel De Moor |
| Abstract Scope |
One area of focus for sustainability within the steel industry is the transition to electric arc furnace steel production as a path for carbon dioxide emissions reduction. However, doing so impacts the chemical compositions of the steels being produced due to the presence of non-metallic residuals namely nitrogen. This study aims to quantify the effect of nitrogen in various ultra-high strength steel grades, including press-hardened steels. For this study, the PHS1500 alloy design changed titanium content along with the nitrogen levels to analyze the effects of titanium nitride precipitates and the amount of free nitrogen on the mechanical properties. Microstructural characterization and mechanical testing, including tensile and bend testing, have been performed. Free bend test results show a linear decrease in maximum bend angle with increasing amount of titanium nitrides present, with bend angle also decreasing with increased amounts of free nitrogen in the alloys. |