本文主要讨论Ti含量和锻造工艺对非调质钢组织与性能的影响及最佳Ti含量的选择。还着重研究了不同Ti含量对钢中沉淀相的形态、大小的影响。并讨论了Ti含量对沉淀强化效应的影响。 This article focuses on the Ti content and forging process on the microstructure and properties of non-quenched and tempered steel and the choice of the best Ti content. The effects of different Ti contents on the morphology and size of the precipitated phase in steel were also studied emphatically. The effect of Ti content on the precipitation strengthening effect was also discussed.