For the purpose of manufacturing the automotive B-pillars with tailored properties, based on the proposed partition induction heating-quenching process, the partition controllable induction heating-stamping process of high-strength boron alloyed steel plates with designable temperature patterns is experimentally investigated. The temperature distribution of the various low temperature region patterns on the steel plates can be arbitrarily customized after heating for 30 s by properly arranging the magnetizer groups. Furthermore, the temperature field of the test B-pillar is customized. The temperature in the low temperature region of the heated B-pillar is 600 °C, which is lower than the start temperature of austenite transformation (A_C1 = 750 °C), while the temperature in the high temperature region is 950℃, which realizes fully austenization. After stamping and quenching, different microstructures are generated in the test B-pillar corresponding to the different temperature regions. The microstructures of the stamped test B-pillar in the low temperature region are mixture microstructures of ferrite + pearlite, while the fine lath martensite microstructures are transformed in the high temperature region. In terms of mechanical properties, the tensile strengths according to the low temperature region and high temperature regions are 438 and 1610 MPa, while the uniform elongation is 14.8% and 6.5% respectively, which meets the design requirements of the B-pillars with tailored properties. The specimens with a tensile strength difference ratio greater than 1: 3.5 and an elongation difference ratio greater than 1: 2.2 are obtained, which indicates the partition controllable induction heating-stamping process provides a new way to achieve automobile lightweight and significantly increasing the safety.

为了制造具有定制性能的汽车B柱，在提出的分隔感应加热淬火工艺的基础上，对具有可设计温度模式的高强度硼合金钢板的分隔可控感应加热冲压工艺进行了实验研究。适当放置磁化器组后，加热30 s后，可以任意定制钢板上各种低温区域图案的温度分布。此外，可以定制测试B柱的温度场。受热B柱的低温区域温度为600°C，低于奥氏体转变的起始温度（A _C1 = 750°C），而高温区域的温度为950℃，从而实现了完全奥氏体化。冲压和淬火后，在测试B柱中生成了与不同温度区域相对应的不同微结构。冲压试验B柱在低温区域的显微组织是铁素体+珠光体的混合显微组织，而细板条马氏体的显微组织在高温区域发生了转变。在机械性能方面，根据低温区和高温区的抗拉强度分别为438和1610 MPa，而均匀伸长率分别为14.8％和6.5％，符合具有定制性能的B柱的设计要求。拉伸强度差比大于1：3的样品