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Effects of Al content on the high-temperature mechanical properties of Al-TRIP steel |
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| Authors: | Heng Cui Dayu Chen KaiTian Zhang |
| Affiliation: | 1. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China cuiheng@ustb.edu.cn![ORCID Icon]({"type":"image","src":"/templates/jsp/images/orcid.png"} "ORCID Icon") https://orcid.org/0000-0002-0645-7453;3. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China;4. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China;5. Institute of Engineering Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China |
| Abstract: | ABSTRACT As-cast transformation-induced plasticity (TRIP) steels with two different aluminium contents (2.80 and 6.75?wt-%) were subjected to investigate the effect of aluminium content on the tensile strength and hot ductility. As the Al content increases from 2.80 to 6.75?wt-%, the third brittle zone of the steel is shifted from 950–750°C to 800–750°C. The 6.75?wt-% Al-TRIP steel is a typical δ-TRIP steel that contains 44.5 wt-% δ-ferrite compared with no δ-ferrite in the 2.80?wt-% Al-TRIP steel. The solidification behaviour of these two types of TRIP steel was compared by calculating equilibrium phase diagrams. The 6.75?wt-% Al-TRIP steel was found to have better ductility than the 2.80?wt-% Al-TRIP steel below 1100°C. |
| Keywords: | TRIP steel δ-TRIP steel high-temperature mechanical properties hot ductility curve brittle zones |