Abstract:  14.0Cr- 1. 1Ni-9.2Mn-0.30Cu stainless steel was developed on the basis of13.36Cr- 1. 12Ni- 11.2Mn low-nickel austenitic stainless steel, and the metallographic structure, microstructure, mechanical properties and forming properties of austenitic stainless steel with different chemical compositions after solution treatment and cold-rolled annealing are studied, as well as the control laws of austenite stability and cold rolling deformation induced martensitic transformation were analyzed. The results show that the mechanical properties of 14.0Cr- 1. 1Ni-9.2Mn-0.30Cu and that of 13.36Cr- 1. 12Ni- 11.2Mn stainless steel are equivalent, the austenitic structure is fully recrystallized after solution treatment and cold-rolled annealing, the average grain size of cold rolling is 12.6 μm and 14.0 μm respectively, and the microstructure is copper texture{112}<111>the IE (bulge test impression endurance value)and  LDR (Limited Drawing Ratio) of 14.0Cr- 1. 1Ni-9.2Mn-0.30Cu stainless steel are 16.15 and 0.46 respectively, which are better than those of 13.36Cr- 11.2Mn stain- less steel, and the Md30/50 temperature of 14.0Cr- 1. 1Ni-9.2Mn-0.30Cu and 13.36Cr- 1. 12Ni- 11.2Mn stainless steel are 87.02 ℃ and 83.55 ℃ respectively, as Md30/50 high, the austenite stability poor, the deformation introducing martensite volume and cold-rolled deformation resistance increasing, the hardness of annealed steel high. But the hardness after annealing can be improved by reducing the speed of cold-rolled annealing process from 10 m/min to9 m/min.

Key words: Austenitic Stainless Steel 14.0Cr- 1. 1Ni-9.2Mn-0.30Cu, Low-nickel, Microstructure Property, Forming Performance, Austenite Stability, Deformation Induced Martensitic Transformation, Annealing Process

摘要： 在13.36Cr-1.12Ni-11.2Mn节镍型奥氏体不锈钢基础上降Mn加Cu,优化开发14.0Cr-1.1Ni-9.2Mn-0.30Cu不锈钢，并研究不同化学成分奥氏体不锈钢固溶处理、冷轧退火后的金相组织、显微织构、力学性能及成形性能，分析了奥氏体稳定性和冷轧形变诱导马氏体相变的控制规律。结果表明：14.0Cr-1.1Ni-9.2Mn-0.30Cu与13.36Cr-1.12Ni-11.2Mn不锈钢力学性能相当，固溶处理、冷轧退火后奥氏体组织再结晶充分，冷轧平均晶粒尺寸分别为12.6μm、14.0μm,显微织构为铜织构{112}<111>;14.00Cr-1.1Ni-9.2Mn-0.30Cu不锈钢的杯突值和极限拉深比分别为16.15和0.46,优于13.36Cr-1.12Ni-11.2Mn不锈钢；14.0Cr-1.1Ni-9.2Mn-0.30Cu与13.36Cr-1.12Ni-11.2Mn钢Md30/50分别为87.02℃和83.55℃,Md30/50高，则奥氏体稳定性差，形变诱导马氏体量和冷轧变形抗力大，退火后硬度高。通过将冷轧退火工艺速度由10 m/min降低至9 m...

关键词: 奥氏体不锈钢14.0Cr-1.1Ni-9.2Mn-0.30Cu, 节镍；组织性能；成形性能；奥氏体稳定性；形变诱导马氏体 相变；退火工艺