阅读说明：本技术 一种汽车钢及其制造方法 (Automobile steel and manufacturing method thereof ) 是由 黄明欣 何斌斌 于 2018-01-05 设计创作，主要内容包括：一种强力且可延展的汽车钢,其包含8-11重量％的Mn、0.1-0.35重量％的C、1-3重量％的Al、0.05-0.5重量％的V以及余量的Fe。通过调节奥氏体稳定剂的量,可以在室温下获得具有适当相分数的马氏体和奥氏体的双相显微组织。马氏体分配C进入残留的奥氏体晶粒。马氏体基体可以确保更高的汽车钢强度,而具有不同机械稳定性的残留奥氏体晶粒可以改善汽车钢的延展性,同时达到1500MPa的强度和20％的延展性。该汽车钢的制造方法避免了常规Q&P钢的高淬火温度,且因此降低了制造价格并且易于批量制造。(A strong and ductile automotive steel comprising 8-11 wt.% Mn, 0.1-0.35 wt.% C, 1-3 wt.% Al, 0.05-0.5 wt.% V, and the balance Fe. By adjusting the amount of austenite stabilizer, a dual-phase microstructure of martensite and austenite with appropriate phase fractions can be obtained at room temperature. Martensite partitions C into retained austenite grains. The martensitic matrix ensures a higher strength of the automotive steel, while the retained austenite grains with different mechanical stability improve the ductility of the automotive steel, while achieving a strength of 1500MPa and a ductility of 20%. The manufacturing method of the automotive steel avoids the high quenching temperature of the conventional Q & P steel, and thus reduces the manufacturing price and is easy to manufacture in mass.)