EFFECT OF RETAINED AUSTENITE ON PLASTIC CHARACTERISTICS OF DUAL PHASE STEELS

Authors

  • Peter Prislupčák U. S. Steel Košice
  • Tibor Kvačkaj Bodva Industry and Innovation Cluster
  • Jana Bidulská Technical University of Košice
  • Stanislav Németh U. S. Steel Košice
  • Mária Demčáková U. S. Steel Košice
  • Roman Gburík U. S. Steel Košice
  • Vladimír Kundracík U. S. Steel Košice

DOI:

https://doi.org/10.36547/ams.28.4.1653

Keywords:

Forming Limit Curve, residual austenite, microstructure, numerical simulation

Abstract

In terms of the current trend of research and development of new materials and optimization of current materials in the automotive industry, the greatest attention is paid to progressive high-strength dual-phase (DP) steels with increased stampability, which are designed for cold stamping for specific internal car body components of the current market. New grades of DP steels provide a combination of high strength and good formability and contribute to the weight savings of vehicle parts by 10 to 20 %, compared to current DP grades. Thanks to their top properties, DP steels with increased formability can absorb more crash energy using less steel. As a result, high-strength DP780GI and DP780GI-HF materials of first generation (hereinfater DP780GI-HF) were analyzed. The stampability improvement of DP steels was demonstrated by the experimentally determined Forming Limit Curves for both steels.

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Published

2022-12-13

How to Cite

Prislupčák, P., Kvačkaj, T., Bidulská, J., Németh, S., Demčáková, M., Gburík, R., & Kundracík, V. (2022). EFFECT OF RETAINED AUSTENITE ON PLASTIC CHARACTERISTICS OF DUAL PHASE STEELS. Acta Metallurgica Slovaca, 28(4), 212–218. https://doi.org/10.36547/ams.28.4.1653

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