利用贝氏体强化,可使低碳低合金钢获得高强度并兼备一定的塑性和韧性.而且通过控轧控冷技术可实现钢的组织和性能控制,在降低成本的同时也保证了焊接性,该类钢种具有广泛的开发和应用前景.但由于贝氏体转变的复杂性,具有900 MPa以上屈服强度的贝氏体钢尚未在大生产中实现.因此,在对高强贝氏体钢中合金元素的作用进行了分析的基础上,比较了不同贝氏体形貌下的力学性能,总结了获取不同贝氏体形貌的制备工艺,最后提出了获取900 MPa以上屈服强度和15％以上伸长率的高强高塑性贝氏体钢的目标微观组织特征.
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