Effect of cooling process after rolling on microstructure and property of Nb-Ti micro-alloyed low-carbon bainite steel

DOI

10.2991/emeit.2012.351How to use a DOI?

Keywords

Nb-Ti Micro-alloyed steel, Low-Carbon Bainite, Cooling Process, Microstructure, Property

Abstract

The influence of cooling process on microstructure, second phase precipitation and mechanical property of Nb-Ti Micro-alloyed Low-Carbon Bainitic Steel has been examined by metalloscope and TEM The results lustrate that accelerated cooling after air-cooling (relaxation) to a certain temperature could obtain ferrite / bainite dual phase structure. The reduction of relaxation stop temperature results in increases of the volume of ferrite phase and grain size and second phase size has trendy of grow up, the shape of bainite has change while the bainite lath boundaries and the orientation become less obvious, dislocation density decreases, and the shape of M/A island changes, which leads to lower strength but improve yield ratio and ductility.

Copyright

© 2012, 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  - Defa Li
AU  - Haiyan Bao
AU  - Shisen Wang
AU  - Yuzhang Xiong
AU  - Shuqing Xing
PY  - 2012/09
DA  - 2012/09
TI  - Effect of cooling process after rolling on microstructure and property of Nb-Ti micro-alloyed low-carbon bainite steel
BT  - Proceedings of the 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT 2012)
PB  - Atlantis Press
SP  - 1577
EP  - 1580
SN  - 1951-6851
UR  - https://doi.org/10.2991/emeit.2012.351
DO  - 10.2991/emeit.2012.351
ID  - Li2012/09
ER  -