Hot Ductility of Ti/Nb-added 800MPa Grade Weathering Steel

DOI

10.2991/icaemt-15.2015.162How to use a DOI?

Keywords

800MPa High Strength Steel, continuous casting slabs, hot ductility, brittle zone.

Abstract

The hot ductility behavior of two kinds of 800MPa grade Ti/Nb-added weathering steel has been investigated by using Gleeble3500 thermo-mechanical simulator. The tensile strength (TS) and reduction in area (RA) were acquired to draw hot ductility curve and hot strength curve. SEM fractographs and microstructures of the tensile specimens were analyzed. The results show that the occurrence of the third brittle zone was related to the formation of film-like ferrite phase along the prior austenite grain boundary. Moreover, the addition of alloy elements has a big influence on hot ductility. Deep ductility trough was observed for niobium added titanium containing steel, while titanium containing steel free of niobium shows excellent hot ductility.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Xue Zhao
AU  - Bin Gan
AU  - Mei Zhang
AU  - Yong Zhong
AU  - Menglian Hou
AU  - Lin Li
PY  - 2015/08
DA  - 2015/08
TI  - Hot Ductility of Ti/Nb-added 800MPa Grade Weathering Steel
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 855
EP  - 859
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.162
DO  - 10.2991/icaemt-15.2015.162
ID  - Zhao2015/08
ER  -