摘要
为提高1Cr17Mn9Ni4N钢固溶处理后的力学性能(特别是钢的强度),研究了化学成分及固溶处理温度对其组织和性能的影响。结果表明,1000～1125℃固溶处理后,该钢的组织为单相奥氏体。在标准成分范围内,随着镍、锰含量的增加,该钢的强度降低,塑性有所改善。氮明显提高该钢的强度。根据试验结果,每增加0 01%的氮钢的室温强度可提高大约5MPa,且塑性基本上不受影响。当合金成分(质量分数,%)控制在C0 08～0 12、Cr16 5～17 5、Ni3 5～4 2、Mn8 0～9 0、N0 22～0 28时,1Cr17Mn9Ni4N钢经1050～1100℃固溶处理后强度较高、塑性好,室温强度σ0 2和σb可分别达到400MPa和800MPa。
The effects of composition and solution-annealing temperature on microstructure and mechanical properties of austenitic stainless steel 1Cr17Mn9Ni4N were studied with the purpose of enhancing the mechanical properties of the steel and the strength in particular. The results show that the microstructure of the steel solutionannealed in the region of 1 0001 125 ℃ is fully austenitic. The strength decreases and the ductility increases slightly with increasing nickel and manganese content. Nitrogen strongly enhances the strength of the steel at a rate of 5 MPa per 001 % additional nitrogen, but its effect on ductility is not significant. The results indicate that the steel containing 008 %012 % of C, 165 %175 % of Cr, 80 %90 % of Mn, 35 %42 % of Ni, and 022 %028 % of N exhibits high strength and ductility after solutionannealing in 1 0501 100 ℃, and the yield strength and ultimate tensile strength of the steel at room temperature can reach the level of 400 MPa and 800 MPa, respectively.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2003年第3期21-24,共4页
Journal of Iron and Steel Research
