| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Advances in Ferrous Metallurgy
|
| Presentation Title |
Further Analysis of the Relationship between Precipitate Formation and a Loss of Hot Ductility in Two Microalloyed Steels |
| Author(s) |
Paul Estermann, Viorel-Sergiu Ilie, Jakob Six, Ernst Kozeschnik |
| On-Site Speaker (Planned) |
Paul Estermann |
| Abstract Scope |
Several technical alloys experience an isolated area of lower deformability at elevated temperatures, which usually falls between 600 °C and 1000 °C for steels. This second ductility minimum can lead to severe problems. Because of the overlapping and interacting nature of influences, this problem is still of interest to the industry as well as the academia. Nitride and carbide precipitates, which can form at elevated temperatures are known to have an effect on the material. The precipitates can hinder the movement of dislocations as well as the sliding and growth of grain boundaries and they can act as nucleation sites for pores. One issue, which keeps coming up in hot ductility tests regarding the right flank is dynamic recrystallisation, which is often disregarded because of the low strain. In this presentation, the relationship between the right flank of the ductility minimum, precipitates and dynamic recrystallisation is investigated. |