冷变形对奥氏体不锈钢表面N离子注入的影响

Effects of Cold Deformation on N Ion Implantation of 1Cr18Ni9Ti Austenitic Stainless Steel

研究了冷变形对1Cr18Ni9Ti奥氏体不锈钢表面N离子注入的影响。结果表明:冷变形对1Cr18Ni9Ti奥氏体不锈钢的表面N离子注入有显著的加速作用;表面N离子注入在保持冷变形强化效果的同时在钢的表面注入层中形成含N的奥氏体γN相,使钢的表面硬度和疲劳性能进一步提高。冷变形和表面N离子注入复合强化可使1Cr18Ni9Ti奥氏体不锈钢获得更高的整体性能和表面性能的配合。

The effects of cold deformation on nitrogen ion implantation of 1Cr18Ni9Ti austenitic stainless steel were studied.The results show that the cold deformation process can accelerate the nitrogen ion implantation.The nitrogen ion implantation can not affect the strengthened results of the cold deformation,but it can form a nitrogen-containing austenite-γN,which can cause lattice distortion and residual compression stress in the surface layer of the steel and improve the surface hardness and fatigue properties of the steel sequentially.The compound strengthening of cold deformation and nitrogen ion implantation can obtain the optimal cooperation of integral and surface properties of 1Cr18Ni9Ti austenitic stainless steel.