Effect of acicular ferrite on mechanical properties of hot-rolled ultra-fine grain microalloyed steels

DOI

10.2991/icmmct-16.2016.147How to use a DOI?

Keywords

Acicular ferrite; ultra-fine grain microalloyed steels; mechanical properties; microstructural quantitative analysis; morphological characteristics.

Abstract

In consideration of the high tensile strength but low elongation properties of ultra-fine grain microalloyed steels prepared by deformation-induced phase transformation rolling technology, microstructural quantitative analysis was conducted. Results show that the volume ratio of acicular ferrites is mainly influenced by cooling rate, the higher the cooling rate is, the more acicular ferrites are obtained. By increasing the volume ratio of acicular ferrites, the tensile strength increases; On the other hand, the elongation reduces markedly because of the morphological characteristics, needle effect, size factor of acicular ferrites and so on. By adjusting the cooling rate in cooling process, the volume ratio of acicular ferrites can be controlled in the optimum range, so as to improve the comprehensive mechanical properties of steel.

Copyright

© 2016, 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  - Xincheng Li
AU  - Xiaoli Wang
AU  - Weixing Zhu
AU  - Yongchun Tang
AU  - Tao Li
AU  - Jinbao Xu
AU  - Liang Chen
PY  - 2016/03
DA  - 2016/03
TI  - Effect of acicular ferrite on mechanical properties of hot-rolled ultra-fine grain microalloyed steels
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology
PB  - Atlantis Press
SP  - 757
EP  - 760
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-16.2016.147
DO  - 10.2991/icmmct-16.2016.147
ID  - Li2016/03
ER  -