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Experimental Investigation of Hot Stamping of Ultra High Strength Steel
Author(s) -
Zhang LiQiang,
Tan WenFang,
Li LuoXing
Publication year - 2014
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201300246
Subject(s) - hot stamping , blank , materials science , mold , ultimate tensile strength , stamping , elongation , microstructure , composite material , boron , metallurgy , alloy , chemistry , organic chemistry
In this paper, the hot stamping mold with a cooling system was designed. The forming process was investigated. The effect of contact state between the blank and the mold on the mechanical properties of the ultra high strength steel was also analyzed. The results show that the spring‐back angles are greatly reduced after hot stamping, compared with stamping at room temperature. The tensile strength and yield strength of the Boron alloy steel sheet are improved. In addition, it is found that the mechanical properties and microstructures of the hot stamped part show an inhomogeneous phenomenon due to the influence of the cooling condition at the blank/mold interface. The sidewall of the part has a higher tensile strength and a lower elongation compared with the other locations.