Abstract A novel processing strategy was proposed, first to promote Mn partitioning behavior during intercritical annealing, second to improve the fraction and stability of retained austenite (RA) and third to enhance mechanical properties of Mn-reduced transformation-induced plasticity (TRIP) steel. By deliberately preparing large-fractioned Mn-enriched cementite before final annealing, the intercritical austenite was encouraged to inherit relatively high Mn content from pre-existing cementite. Eventually, the formation of sufficiently stable RA together with the precipitation of fine VC particles in ferritic matrix contributes to much better yield strength-tensile strength-ductility combination of 763 MPa-1022 MPa-46.4%, which is superior to many steels containing higher Mn concentrations.

中文翻译：

---

通过增强碳化物预退火在锰还原相变诱导塑性钢中改善锰分配和力学性能

摘要 提出了一种新的加工策略，首先是在临界间退火过程中促进锰的分配行为，其次是提高残余奥氏体（RA）的分数和稳定性，第三是提高锰降低相变诱导塑性（TRIP）钢的力学性能。通过在最终退火前有意制备大比例的富锰渗碳体，促使临界间奥氏体从预先存在的渗碳体中继承相对较高的 Mn 含量。最终，足够稳定的 RA 的形成以及铁素体基体中细 VC 颗粒的沉淀有助于更好的屈服强度 - 拉伸强度 - 延展性组合 763 MPa-1022 MPa-46.4%，这优于许多含有较高 Mn 的钢浓度。