论文部分内容阅读
一、绪言双相钢的研究始于六十年代。到七十年代末期,世界发生能源危机,美日等国将其作为节能材料,用于汽车制造业。近年来,双相钢在我国也受到注视,开展了一些研究工作。双相钢是一种低碳低合金钢。在奥氏体区或奥氏体-铁素体区内保温后,经适当的方式冷却获得双相组织。其组织特点是在高塑性的铁素体基体上,均匀分布着10～20%高强度的马氏体,从而使钢在较高塑性条件下,提高了强度,成为具有良好冲压成型性能的低合金高强度钢。它适用于汽车框架,保险杠,车轮等构件,是一种较好的节能用钢。
First, the introduction of dual phase steel began in the sixties. By the late seventies, the world had an energy crisis, and the United States and Japan used it as an energy-saving material for the automobile manufacturing industry. In recent years, dual-phase steel has also been watched in our country, carried out some research work. Duplex steel is a low carbon low alloy steel. After holding in the austenitic or austenitic-ferritic zone, the duplex structure is obtained by appropriate cooling. Its organization is characterized by high-strength ferrite matrix, uniform distribution of 10 to 20% of the high-strength martensite, so that the steel under higher plasticity, increased strength, as a good stamping formability low Alloy high strength steel. It applies to the car frame, bumpers, wheels and other components, is a better energy-saving steel.