Valuation method for effects of hot stamping parameters on tailored properties

摘要

The effects of hot stamping parameters including die temperature and holding pressure was evaluated throughout the orthogonal experiment method. Regardless of the effect of the holding pressure, when the die temperature was lower than 400°C, the lowest hardness emerged at the air gap. The range of transition zone expanded as the die temperature increased. When the die temperature was set at 400°C, the hardness with 20MPa holding pressure was higher than others, which resulted by considering both the effect of cooling rate and strain.