按超低碳、复合钛和铌微合金化原则设计了钢的成分,使基体中无碳、氮间隙原子存在;添加磷、硅以提高强度。研究结果表明,净化基体、优选工艺参数、控制有利γ-〈111〉//N.D 织构形成,可获得 n 值达0.32～0.33,r 值达2.56～2.68的优异基本成型性。采用 ODF 织构分析技术和化学电解相分析研究了主要工艺过程织构转变和第二相析出规律。对成分、工艺、微观结构和基本成型性的关系进行了讨论。 According to the principle of ultra-low carbon, composite titanium and niobium micro-alloying, the composition of the steel is designed so that carbon and nitrogen interstitial atoms exist in the matrix; phosphorus and silicon are added to improve the strength. The results show that excellent basic formability with n value of 0.32-0.33 and r value of 2.56-2.68 can be obtained by purifying the matrix, optimizing the process parameters and controlling the texture formation of γ- <111> // N.D. The textures of the main process and the precipitation of the second phase were studied by ODF texture analysis and chemical electrolytic phase analysis. The composition, process, microstructure and basic formability of the relationship were discussed.