9Bariani P F,Bruschi S,Ghiotti A, et al. TestingFormability in the Hot Stamping of HSS[J]. CIRPAnnals_ Manufacturing Technology. 2008, 57 (1):265-268.
10Bayraktar E,Isac N,Arnold G. An ExperimentalStudy on the Forming Parameters of Deep_ drawa-ble Steel Sheets in Automotive Industry[J]. Journalof Materials Processing Technology, 2005, 162/163:471-476.