中文摘要：

为解决含铝相变塑性钢连铸时堵水口问题，上海大学和鞍钢联合课题组经热力学和动力学计算，成功预测了磷可以替代铝的应变诱发相变作用。与鞍钢经大量试验证实后，在产线上成功生产并应用于一汽奔腾车型上，为其通过国家的C-NCAP碰撞测试并取得优异成绩，作了贡献。课题组依层错热力学计算，设计了具有孪晶诱发塑性＋相变诱发塑性的孪晶塑性钢，并在国际上首创了转炉冶炼高锰钢，生产出的热轧和冷轧孪晶塑性汽车钢，性能国际领先，产品应用在一汽一款重点开发的有极重要用途的高级品牌车上。课题组在国际上首先发现了铝在钢中的热力学数据有严重错误，在纠正了这些错误后通过计算发现铝可大大提高钢中奥氏体含碳量和相变塑性，由此生产的超高强度相变塑性钢，当强度达1023MPa时，断后伸长率为22％，这已是目前世界上低合金汽车钢所达最高强塑积。

英文摘要：

In order to prevent clogging in the continuous casting process for TRIP steel containing A1 at the end of 1900＇ s, P which exhibits the function of inducing phase transformation, was proved to be the successful substitute for A1 after thermodynamic and kinetic calculation by SU and Ansteel. The TRIP steel containing P was manufactured in Ansteel and assembled in ＂benteng＂ car which received the first class prize in China C-NCAP contest. Based on stake fault energy calculation, new type of TWIP steel with both TWIP ＋ TRIP effect was designed. This steel was firstly manufactured in converter in the worldwide scope and its products including hot rolling sheet and cold rolling sheet were used in the most luxury mode automobile for their superior mechanical properties. Big error of thermodynamic database of Al in steel, which has ever been adopted worldwide, was discovered and new database was obtained through optimization. Impressive functions of Al to increase carbon content in austenite soaking in the two phase field and to enhance the TRIP effect were then found after calculation of the steel with the new database. Based on the discovery stated above, TRIP steel with extra high strength 1 023 MPa and high elongation rate 22%, reaching the highest quality of low alloy automobile steel, was successfully produced in Ansteel plant.