Proceedings of the 2015 International Conference on Material Science and Applications

Study on Micro-structure and Micro-hardness of Thick Plate 16Mn Steel

Authors
Yong-Tao Zhao, Zi-Xiao Liang, Li-Ping Zhao, Yu-Feng Wang
Corresponding Author
Yong-Tao Zhao
Available Online June 2014.
DOI
10.2991/icmsa-15.2015.9How to use a DOI?
Keywords
16Mn, Welding Joints, Micro-structure of Welding Joints, Micro-hardness.
Abstract

The 16Mn steel has good mechanical properties and welding performance, so it is used widely in pressure vessels, petroleum storage tanks and pipelines of oil and gas. Submerged arc welding was employed to weld 16Mn, by OM, the microstructure in every region of welding joint was observed, by means of IT software, grain sizes of every region of welding joints were investigated. Then the micro-hardness of welding joints was measured through micro-hardness testing. The results show that 60mm thick 16Mn steel plates, by submerged arc welding(in DC) and under appropriate craft conditions, the welded joint appearance is good, microstructure is uniform, it is ferrite+pearlite, the micro-hardness obtains the max at the edge of welded joint and HAZ. In HAZ zones, grain size grows up. Thick welded steel plates of big line energy, high energy, low cooling rate and coarse grain of the welding heat affected zone (HAZ) may lead to welding joint ductility decrease, it is the weak link[1] of the structural failure. Through research and analysis of 60mm thick plate 16Mn steel welding joint microstructure and mechanical properties, it is impossible to provide the theory foundation for the actual welding process of 16Mn thick plate.

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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Volume Title
Proceedings of the 2015 International Conference on Material Science and Applications
Series
Advances in Physics Research
Publication Date
June 2014
ISBN
978-94-62520-75-2
ISSN
2352-541X
DOI
10.2991/icmsa-15.2015.9How to use a DOI?
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/).

Cite this article

TY  - CONF
AU  - Yong-Tao Zhao
AU  - Zi-Xiao Liang
AU  - Li-Ping Zhao
AU  - Yu-Feng Wang
PY  - 2014/06
DA  - 2014/06
TI  - Study on Micro-structure and Micro-hardness of Thick Plate 16Mn Steel
BT  - Proceedings of the 2015 International Conference on Material Science and Applications
PB  - Atlantis Press
SP  - 47
EP  - 50
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.9
DO  - 10.2991/icmsa-15.2015.9
ID  - Zhao2014/06
ER  -