Potential of Hot Rolled Dualphase Steel from Compact Strip Production CSP^® in Automotive Applications

Abstract:

Industrial thin slab casting and direct rolling processing started in 1989 with the world’s first CSP® plant at Crawfordsville (USA). Since this time CSP® and competing thin slab casting and direct rolling concepts have been developed to a standard process for hot strip production [1]. Typical features of the CSP® process are the homogeneous structural and mechanical properties all along the strip. Direct hot rolling of thin slabs may be followed by a well defined cooling pattern to produce hot strip from high strength multiphase steel, like dualphase (DP) grades, on the runout table. These steel grades are characterized by a favorable combination of strength and ductility based on hard martensitic particles embedded in a ductile ferritic matrix. This paper highlights the mechanical properties of hot rolled DP steel from CSP® production. To this purpose, multiple tests and modeling have been applied to determine e.g. r-values, forming limit curves and yield locus. In addition, forming simulation as well as laboratory and industrial deep drawing tests have been performed.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 2278-2283
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.2278
• Online since: January 2012
• Authors: Carl Peter Reip, Christian Klinkenberg, Long Chang Tong, Pavel Hora
• Keywords: Autoform, CSP^®, Direct Rolling, DP Steel, Formability, Modeling, Simulation, Thin Slab Casting

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