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The hot stamped parts are used in regions where very high strength is required.
This paper helps to better understand the mechanical properties of hot stamped ultra-high strength steel.
Tensile strength of hot stamped parts is determined as the relation in the mathematical model.
The statistical analysis showed that all four factors significantly affect the tensile strength of the hot stamped parts.
In order to obtain hot stamped parts with optimal mechanical properties, response surface methodology based on the central composite design has been employed to design the experiment matrix.
The simulation and experimental results showed that the quality of trimmed hot stamped surface was poor with not straight profile and small burnish zone, but it can be improved by choosing proper trimming angle and blade radius.
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The experimental hot stamping part possessed higher tensile strength and elongation, compared with conventional hot-stamping steel of 22MnB5.
A numerical model of the hot stamping process was developed to predict the major and minor strain distributions in hot-stamped components.
The commercial materials suitable for hot stamping are also provided.
A novel 22MnMoB hot stamping steel was designed.
However, the simulation of hot stamping is rather complex and challenging, and further research still needs to be done on hot stamping hardening mechanism.
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