Effect of Ti on microstructure and properties of Ti-Nb microalloyed high strength steels

DOI

10.2991/ic3me-15.2015.329How to use a DOI?

Keywords

Titanium, microstructure, property, precipitation strengthening

Abstract

Three Ti-Nb microalloyed high strength steels with varying Ti contents were refined in laboratory 50 kg vacuum induction furnace. Microstructure observation and TEM analysis were conducted. Tensile tests were performed. The results show that both yield strength and ultimate tensile strength increase with the Ti content, while the elongation has no significant change. The microstructures consist of bainite, ferrite and perlite, and microstructure morphology has no obvious difference. TEM analysis shows that the steel with higher Ti content contains more fine precipitates of (Ti, Nb)(C, N), indicating that precipitation strengthening is the main factor for the improvement of strength

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/).

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TY  - CONF
AU  - Qing Yuan
AU  - Guang Xu
AU  - Bei He
AU  - Yulong Zhang
PY  - 2015/08
DA  - 2015/08
TI  - Effect of Ti on microstructure and properties of Ti-Nb microalloyed high strength steels
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 1710
EP  - 1715
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.329
DO  - 10.2991/ic3me-15.2015.329
ID  - Yuan2015/08
ER  -