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Application Development of Low Carbon Type Dual Phase 980MPa High Strength Steel
Technical Paper
2006-01-1586
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Use of high strength steel (HSS) could be an important consideration in achieving competitive weight and safety performance of the body-in-white (BIW). This study covers key technical issues in the application development. Many aspects were studied such as formability, weldability and impact strength for application of this grade to the BIW. One of the key issues is spot weldability, especially in the assembly of heavy gauge materials for structural parts. The spot weld strength appears not to satisfy the target for some HSS applications, when hardness of the nugget is high. The relation between weld strength and the chemical composition of steel sheets was studied, because hardness can be controlled by chemical composition and welding conditions. It was found that using lower carbon content or carbon equivalent compared to conventional grades could improve weld strength. The newly developed low carbon grade can be applied to many parts including heavy gauge up to 2mm in platform, which also meet other requirements than spot welding.
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Citation
Takakura, K., Takagi, K., and Yoshinaga, N., "Application Development of Low Carbon Type Dual Phase 980MPa High Strength Steel," SAE Technical Paper 2006-01-1586, 2006, https://doi.org/10.4271/2006-01-1586.Also In
Innovations in Steel Sheet Products & Processing & Steel Bar Products
Number: SP-2035; Published: 2006-04-03
Number: SP-2035; Published: 2006-04-03
References
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