Adaptive Approach to Structure And Properties Forming in Niobium Alloyed Pipe Steels

DOI

10.2991/icsmme-15.2015.5How to use a DOI?

Keywords

Structure Formation, Impact Strength, Dynamical Recrystallization, Hot Rolling, Niobium Alloyed Steels

Abstract

The results of research aimed at structure formation in niobium alloyed steels for pipe production by means of dynamic recrystallization control during hot rolling at a wide strip mill are shown. Influence of deformation, time and temperature parameters in the continuous roughing train of a wide strip hot rolling mill, on the microstructure of niobium alloyed steels and the level of their mechanical properties is studied. It is shown that within the temperature range of 1000 - 1050° in steels X52-X70 grade beside intensive dynamic recrystallization, one can see secondary recrystallization as well. From the obtained data it is evident that niobium alloyed pipe steels with lower carbon content 0.06-0.08 % C mechanical properties are ensured by hard solution strengthening mechanism of Mn combined with Ni and Cr. Optimal both temperature and rate parameters of hot deformation during rolling are determined. It leads to increasing ductility basically toughness of niobium contained steels for pipes.

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  - Golubchik Eduard
AU  - Polyakova Marina
PY  - 2015/11
DA  - 2015/11
TI  - Adaptive Approach to Structure And Properties Forming in Niobium Alloyed Pipe Steels
BT  - Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SP  - 17
EP  - 21
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.5
DO  - 10.2991/icsmme-15.2015.5
ID  - Eduard2015/11
ER  -