Mechanical Properties and Microstructure of High-Strength Steel Controlled by Hot Stamping Process

摘要: A novel design and manufacturing method, dubbed “precast,” of the cooling system tools for a hot forming process was proposed in this paper. The integrated structures punch blank holder were determined by analyzing bending reverse-bending deformation parts. desired crashworthiness performance an automotive front bumper constructed with obtained tailored phase transformation, which generated martensite-bainite middle full martensite transformation corner areas. Varying effects formed parts caused highest temperature to be located bottom lowest on end Moreover, microstructural distributions demonstrated that possessed relatively lower content martensite, while, conversely, higher content. This precisely most For six-process cycle stamping, temperatures reached stable status after initial rapid increase first three cycles. results verified feasibility under multiprocess