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Development of New Vehicle Safety Structures by Using Third-Generation Steels
- Samet Erzincanlioğlu - Tofaş Türk Otomobil Fabrikasi R&D Center, Turkey ,
- Tamer Aydiner - Tofaş Türk Otomobil Fabrikasi R&D Center, Turkey ,
- Firat Aras - Tofaş Türk Otomobil Fabrikasi R&D Center, Turkey ,
- Hafize Çelik - Tofaş Türk Otomobil Fabrikasi R&D Center, Turkey ,
- Eren Billur - Atilim University, Turkey ,
- Semih Karabulut - Tofaş Türk Otomobil Fabrikasi R&D Center, Turkey ,
- Iskender Onder Gümüs - Tofaş Türk Otomobil Fabrikasi R&D Center, Turkey
Journal Article
05-15-02-0011
ISSN: 1946-3979, e-ISSN: 1946-3987
Sector:
Citation:
Erzincanlioğlu, S., Aydiner, T., Aras, F., Çelik, H. et al., "Development of New Vehicle Safety Structures by Using Third-Generation Steels," SAE Int. J. Mater. Manf. 15(2):155-174, 2022, https://doi.org/10.4271/05-15-02-0011.
Language:
English
Abstract:
Research and development efforts in the automotive industry have been long
focused on crashworthy, durable vehicles with the lowest mass possible as higher
mass requires more energy and, thus, causes more CO2 emissions. One
way of approaching these objectives is to reduce the total vehicle weight by
using higher strength-to-weight ratio materials, such as Advanced High-Strength
Steels (AHSS). Typically, as the steel gets stronger, its formability is
reduced. The steel industry has been long developing (so-called)
third-generation (Gen3) AHSS for the automotive industry. These grades offer
higher formability compared to first-generation (Gen1) and cost less compared to
the second-generation (Gen2) AHSS. Transformation Induced Plasticity
(TRIP)-aided Bainitic Ferrite (TBF) and Quenching and Partitioning (Q&P)
steel families are considered to be the Gen3 AHSS. These grades can be
cold-formed to more complex shapes, compared with the Gen1 Dual Phase (DP) and
TRIP steels at equivalent strength levels. In this article, new single-piece A-
and B-pillar reinforcements were designed using a Gen3 AHSS, TBF980.
Spot-welding operations were eliminated due to part consolidation with the more
formable steel. These parts will be the first structural automotive parts which
were manufactured with cold-forming technology using TBF steels with a sstrength
level close to 1 GPa or even more. Weight and cost reductions were realized by
the new design while improving the crash performance.