USE OF MULTI-PHASE TRIP STEEL FOR PRESS-HARDENING TECHNOLOGY

Authors

  • Hana JIRKOVÁ University of West Bohemia, RTI - Regional Technological Institute, Univerzitní 22, CZ – 306 14 Pilsen
  • Kateřina OPATOVÁ University of West Bohemia, RTI - Regional Technological Institute, Univerzitní 22, CZ – 306 14 Pilsen
  • Štěpán JENÍČEK University of West Bohemia, RTI - Regional Technological Institute, Univerzitní 22, CZ – 306 14 Pilsen
  • Jiří VRTÁČEK University of West Bohemia, RTI - Regional Technological Institute, Univerzitní 22, CZ – 306 14 Pilsen
  • Ludmila KUČEROVÁ University of West Bohemia, RTI - Regional Technological Institute, Univerzitní 22, CZ – 306 14 Pilsen
  • Petr KURKA Anchor Lamina GmbH, Chemnitz

DOI:

https://doi.org/10.12776/ams.v25i2.1267

Keywords:

high strength steels;, press-hardening;, TRIP steels, heat treatments

Abstract

Development of high strength or even ultra-high strength steels is mainly driven by the automotive industry which strives to reduce the weight of individual parts, fuel consumption, and CO2 emissions. Another important factor is to improve passenger safety. In order to achieve the required mechanical properties, it is necessary to use suitable heat treatment in addition to an appropriate alloying strategy. The main problem of these types of treatments is the isothermal holding step. For TRIP steels, the holding temperature lies in the field of bainitic transformation. These isothermal holds are economically demanding to perform in industrial conditions. Therefore new treatments without isothermal holds, which are possible to integrate directly into the production process, are searched. One way to produce high-strength sheet is the press-hardening technology. Physical simulation based on data from a real-world press-hardening process was tested on CMnSi TRIP steel. Mixed martensitic-bainitic structures with ferrite and retained austenite (RA) were obtained, having tensile strengths in excess of 1000 MPa.

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Published

2019-06-28

How to Cite

JIRKOVÁ, H. ., OPATOVÁ, K., JENÍČEK, Štěpán, VRTÁČEK, J., KUČEROVÁ, L., & KURKA, P. (2019). USE OF MULTI-PHASE TRIP STEEL FOR PRESS-HARDENING TECHNOLOGY . Acta Metallurgica Slovaca, 25(2), 101–106. https://doi.org/10.12776/ams.v25i2.1267