PR-294-026 - 2013 Intl. Symposium on New Developments in AHSS

Novel Alloying Design for Press Hardening Steels With Better Crash Performance

Jian Bian, Hardy Mohrbacher

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Over the last decade the press-hardening process has become a key lightweight technology for the automotive industry worldwide because it offers ultra-high strength up to 1500MPa for the safety components; adopts the modern manufacturing technology to form the ultra-high strength steels and finally gives carmakers new opportunities to achieve the lightweight design. Today’s state-of-the-art designs utilize up to 26% of press-hardening steels in the car body and up to 40% use is projected in future vehicle designs.

Keywords: Press hardening steel, martensite, grain refinement, grain boundary cohesion, toughness, delayed cracking