Manufacturing and Virtual Design to Tailor the Properties of Boron-Alloyed Steel Tubes

  • Illia HordychEmail author
  • Sebastian Herbst
  • Florian Nürnberger
  • Viacheslav Boiarkin
  • Olivier Hubert
  • Hans Jürgen Maier
Part of the Lecture Notes in Applied and Computational Mechanics book series (LNACM, volume 93)


Application of products with properties locally adapted for specific loads and requirements has become widespread in recent decades. In the present study, an innovative approach to manufacture tubes with tailored properties in the longitudinal direction from a boron-alloyed steel 22MnB5 was developed. Due to advanced heating and cooling strategies, a wide spectrum of possible steel phase compositions can be obtained in tubes manufactured in a conventional tube forming line. A heat-treatment station placed after the forming line is composed of an inductive heating and an adapted water-air cooling spray system. These short-action processes allow fast austenitizing and subsequent austenite decomposition within several seconds. To describe the effect of high inductive heating rates on austenite formation, dilatometric investigations were performed in a heating rate range from 500 to 2500 K s−1. A completed austenitizing was observed for the whole range of the investigated heating rates. The austenitizing was described using Johnson-Mehl-Avrami model. Furthermore, series of experiments on heating and cooling with different cooling rates in the developed technology line was carried out. Complex microstructures were obtained for the cooling in still as well as with compressed air, while the water-air cooling at different pressures resulted in quenched martensitic microstructures. Nondestructive testing of the mechanical properties and the phase composition was realized by means of magnetization measurements. Logarithmic models to predict the phase composition and hardness values from the magnetic properties were obtained. Subsequently, a simulation model allowing virtual design of tubes in the FE-software ANSYS was developed on basis of experimental data. The model is suited to predict microstructural and mechanical properties under consideration of the actual process parameters.



The present study is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—project number 134839507 within the scope of the graduate school’s IRTG 1627 “Virtual Materials and Structures and their Validation”, subproject C5 “Virtual Design and Manufacturing of Tailored Tubes”.


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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Illia Hordych
    • 1
    Email author
  • Sebastian Herbst
    • 1
  • Florian Nürnberger
    • 1
  • Viacheslav Boiarkin
    • 2
  • Olivier Hubert
    • 3
  • Hans Jürgen Maier
    • 1
  1. 1.Institut für Werkstoffkunde (Materials Science)Leibniz Universität HannoverHannoverGermany
  2. 2.Department of Metal FormingNational Metallurgical Academy of UkraineDniproUkraine
  3. 3.Laboratoire de Mécanique et TechnologieEcole Normale Supérieure Paris SaclayCachanFrance

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