Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels

Miroslav Kvicala; Michaela Stamborska

doi:doi:10.11648/j.ijmsa.20140306.15

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Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels

Miroslav Kvicala, Michaela Stamborska

Published in International Journal of Materials Science and Applications (Volume 3, Issue 6)

Received: 25 September 2014 Accepted: 8 October 2014 Published: 20 October 2014

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Abstract

The low-alloyed Cr-Mo steels (25CrMo4, 34CrMo4 and 42CrMo4) are used for production of important technical equipment parts in the petrochemical industry, for transportation of the gaseous hydrocarbons, concentrated acids, and lyes. They are also used for rolling of seamless tubes, in the production of pressure bottles, steel bolts, etc. Steel grades 25CrMo4 and 34CrMo4 represents materials with improved mechanical properties, mainly due to vanadium microalloying. Unfortunately, vanadium microalloyed steels are very sensitive to cracks occurrence after continuous casting and/or heating before hot rolling. This paper deals with vanadium rich precipitates MC, M3C2 and M7C3 formation during continuous casting process. It was verified that vanadium microalloyed steel 34CrMo4 exhibited different carbides formation mechanism and contained significantly higher rate of vanadium in MxCy carbides than steel grade 42CrMo4 using experimental data and ThermoCalc software. Understanding of the vanadium precipitation kinetics is necessary for manufacturing process optimization and internal defects limitation.

Published in	International Journal of Materials Science and Applications (Volume 3, Issue 6)
DOI	10.11648/j.ijmsa.20140306.15
Page(s)	309-313
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Cracks, Precipitation, Vanadium, 34CrMo4, 42CrMo4

References

[1]	M. Kvicala, A. Hendrych, O. Zivotsky, P. Jandacka, “The influence of Cr, Mn and Mo elements on cracks occurrence in low alloyed Cr-Mo steels,” Acta Metallurgica Slovaca, 16 (2), pp. 122-126, 2010.
[2]	A. Hendrych, M. Kvicala, V. Matolin, O. Zivotsky, P. Jandacka, “The influence of vanadium microalloying on voids occurence in low alloyed Cr-Mo steels after continuous casting,” International Journal of Fracture, 168 (2), (2011) 259-266.
[3]	M. Kvicala, K. Frydrysek, A. Hendrych, “Stress-strain behaviour simulation of vanadium microalloyed steel with the internal defects during two different heating strategies,” International Journal of Fracture, 181 (1), pp. 139-146, 2013.
[4]	Z. Jancikova, O. Zimny, M. Kvicala, P. Kostial, R. Meca, “Prediction of internal defects in rolled products from Cr-Mo steels using artificial intelligence methods,” 22nd International Conference on Metallurgy and Materials (METAL), pp. 1932 - 1937, 2013.
[5]	G. L. Dunlop, C.,J. Carlsson, G. Frimodig, “Precipitation of VC in ferrite and pearlite during direct transformation of a medium carbon microalloyed steel,” Metallurgical and Materials Transactions A 9, pp. 261-266, 1978.
[6]	M. Kvicala, K. Frydrysek, A. Hendrych, “Influence of different heating strategies on stress strain behaviour of continuously cast bloom with with and without internal defect,” 22nd International Conference on Metallurgy and Materials (METAL), pp. 554 - 559, 2013.
[7]	T. N. Baker, “Processes, microstructure and properties of vanadium microalloyed steels,” Materials Science and Technology 25, pp. 1083-1107, 2009.
[8]	M. Kvicala, M. Klimek, I. Schindler, “Study of Technological Formability of Low-alloyed Steel 25CrMo4,” Hutnické listy 6, pp. 13-15, 2009.
[9]	B. Mintz, R. Abushosha, “Influence of Vanadium on Hot Ductility of steel,” Ironmaking and Steelmaking 20 (6), pp. 445 – 452, 1993.
[10]	M. Stamborska, M. Losertova, V. Mares, L. Horsak, “Stress analysis in cylindrical specimens made from 34CrMo4 using DIC,” Acta Metallurgica Slovaca 20 (2), pp. 229 - 235, 2014.
[11]	M. Kvicala, A. Hendrych, K. Frydrysek, “Continously cast bloom with internal defect - FEM model optimization,” Acta Metallurgica Slovaca 20 (1), pp. 5-10, 2014.
[12]	Y. Li, “Dispersion strengthening in vanadium microalloyed steels processed by simulated thin slab casting and direct charging Part 1: Processing parameters, mechanical properties and microstructure,” Materials Science and Technology 23, (5), pp. 509 – 518, 2007.
[13]	C. Scott, F. Perrard, P. Barges, “Microalloying with Vanadium for Improved Cold Rolled TRIP Steels,” International Seminar 2005 on Application Technologies of Vanadium in Flat – Rolled Steels 4, pp. 13 – 26, 2005.
[14]	M.J. Balart, C.L. Davis, M. Strangwood, “Fracture behaviour in medium carbon Ti-V-N and microalloyed ferritic – pearlitic and bainitic forming steels with enhanced machinability,” Materials Science and Engineering A 28 (1), pp. 48 – 57, 2002.

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APA Style

Miroslav Kvicala, Michaela Stamborska. (2014). Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels. International Journal of Materials Science and Applications, 3(6), 309-313. https://doi.org/10.11648/j.ijmsa.20140306.15

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ACS Style

Miroslav Kvicala; Michaela Stamborska. Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels. Int. J. Mater. Sci. Appl. 2014, 3(6), 309-313. doi: 10.11648/j.ijmsa.20140306.15

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AMA Style

Miroslav Kvicala, Michaela Stamborska. Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels. Int J Mater Sci Appl. 2014;3(6):309-313. doi: 10.11648/j.ijmsa.20140306.15

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@article{10.11648/j.ijmsa.20140306.15,
  author = {Miroslav Kvicala and Michaela Stamborska},
  title = {Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels},
  journal = {International Journal of Materials Science and Applications},
  volume = {3},
  number = {6},
  pages = {309-313},
  doi = {10.11648/j.ijmsa.20140306.15},
  url = {https://doi.org/10.11648/j.ijmsa.20140306.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20140306.15},
  abstract = {The low-alloyed Cr-Mo steels (25CrMo4, 34CrMo4 and 42CrMo4) are used for production of important technical equipment parts in the petrochemical industry, for transportation of the gaseous hydrocarbons, concentrated acids, and lyes. They are also used for rolling of seamless tubes, in the production of pressure bottles, steel bolts, etc. Steel grades 25CrMo4 and 34CrMo4 represents materials with improved mechanical properties, mainly due to vanadium microalloying. Unfortunately, vanadium microalloyed steels are very sensitive to cracks occurrence after continuous casting and/or heating before hot rolling. This paper deals with vanadium rich precipitates MC, M3C2 and M7C3 formation during continuous casting process. It was verified that vanadium microalloyed steel 34CrMo4 exhibited different carbides formation mechanism and contained significantly higher rate of vanadium in MxCy carbides than steel grade 42CrMo4 using experimental data and ThermoCalc software. Understanding of the vanadium precipitation kinetics is necessary for manufacturing process optimization and internal defects limitation.},
 year = {2014}
}

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TY  - JOUR
T1  - Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels
AU  - Miroslav Kvicala
AU  - Michaela Stamborska
Y1  - 2014/10/20
PY  - 2014
N1  - https://doi.org/10.11648/j.ijmsa.20140306.15
DO  - 10.11648/j.ijmsa.20140306.15
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 309
EP  - 313
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20140306.15
AB  - The low-alloyed Cr-Mo steels (25CrMo4, 34CrMo4 and 42CrMo4) are used for production of important technical equipment parts in the petrochemical industry, for transportation of the gaseous hydrocarbons, concentrated acids, and lyes. They are also used for rolling of seamless tubes, in the production of pressure bottles, steel bolts, etc. Steel grades 25CrMo4 and 34CrMo4 represents materials with improved mechanical properties, mainly due to vanadium microalloying. Unfortunately, vanadium microalloyed steels are very sensitive to cracks occurrence after continuous casting and/or heating before hot rolling. This paper deals with vanadium rich precipitates MC, M3C2 and M7C3 formation during continuous casting process. It was verified that vanadium microalloyed steel 34CrMo4 exhibited different carbides formation mechanism and contained significantly higher rate of vanadium in MxCy carbides than steel grade 42CrMo4 using experimental data and ThermoCalc software. Understanding of the vanadium precipitation kinetics is necessary for manufacturing process optimization and internal defects limitation.
VL  - 3
IS  - 6
ER  -

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Author Information

Miroslav Kvicala

Department of Non-ferrous Metals, Rafination and Recyclation, V?B – Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava – Poruba, Czech Republic
Michaela Stamborska

Department of Non-ferrous Metals, Rafination and Recyclation, V?B – Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava – Poruba, Czech Republic

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Plain Text BibTeX RIS

APA Style

Miroslav Kvicala, Michaela Stamborska. (2014). Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels. International Journal of Materials Science and Applications, 3(6), 309-313. https://doi.org/10.11648/j.ijmsa.20140306.15

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ACS Style

Miroslav Kvicala; Michaela Stamborska. Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels. Int. J. Mater. Sci. Appl. 2014, 3(6), 309-313. doi: 10.11648/j.ijmsa.20140306.15

Copy | Download

AMA Style

Miroslav Kvicala, Michaela Stamborska. Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels. Int J Mater Sci Appl. 2014;3(6):309-313. doi: 10.11648/j.ijmsa.20140306.15

Copy | Download

@article{10.11648/j.ijmsa.20140306.15,
  author = {Miroslav Kvicala and Michaela Stamborska},
  title = {Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels},
  journal = {International Journal of Materials Science and Applications},
  volume = {3},
  number = {6},
  pages = {309-313},
  doi = {10.11648/j.ijmsa.20140306.15},
  url = {https://doi.org/10.11648/j.ijmsa.20140306.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20140306.15},
  abstract = {The low-alloyed Cr-Mo steels (25CrMo4, 34CrMo4 and 42CrMo4) are used for production of important technical equipment parts in the petrochemical industry, for transportation of the gaseous hydrocarbons, concentrated acids, and lyes. They are also used for rolling of seamless tubes, in the production of pressure bottles, steel bolts, etc. Steel grades 25CrMo4 and 34CrMo4 represents materials with improved mechanical properties, mainly due to vanadium microalloying. Unfortunately, vanadium microalloyed steels are very sensitive to cracks occurrence after continuous casting and/or heating before hot rolling. This paper deals with vanadium rich precipitates MC, M3C2 and M7C3 formation during continuous casting process. It was verified that vanadium microalloyed steel 34CrMo4 exhibited different carbides formation mechanism and contained significantly higher rate of vanadium in MxCy carbides than steel grade 42CrMo4 using experimental data and ThermoCalc software. Understanding of the vanadium precipitation kinetics is necessary for manufacturing process optimization and internal defects limitation.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - Simulation of the Carbides Precipitation Mechanism in 34CrMo4 and 42CrMo4 Steels
AU  - Miroslav Kvicala
AU  - Michaela Stamborska
Y1  - 2014/10/20
PY  - 2014
N1  - https://doi.org/10.11648/j.ijmsa.20140306.15
DO  - 10.11648/j.ijmsa.20140306.15
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 309
EP  - 313
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20140306.15
AB  - The low-alloyed Cr-Mo steels (25CrMo4, 34CrMo4 and 42CrMo4) are used for production of important technical equipment parts in the petrochemical industry, for transportation of the gaseous hydrocarbons, concentrated acids, and lyes. They are also used for rolling of seamless tubes, in the production of pressure bottles, steel bolts, etc. Steel grades 25CrMo4 and 34CrMo4 represents materials with improved mechanical properties, mainly due to vanadium microalloying. Unfortunately, vanadium microalloyed steels are very sensitive to cracks occurrence after continuous casting and/or heating before hot rolling. This paper deals with vanadium rich precipitates MC, M3C2 and M7C3 formation during continuous casting process. It was verified that vanadium microalloyed steel 34CrMo4 exhibited different carbides formation mechanism and contained significantly higher rate of vanadium in MxCy carbides than steel grade 42CrMo4 using experimental data and ThermoCalc software. Understanding of the vanadium precipitation kinetics is necessary for manufacturing process optimization and internal defects limitation.
VL  - 3
IS  - 6
ER  -

Copy | Download