Ni对中碳高强度弹簧钢腐蚀疲劳性能的影响  

Effect of Ni on Corrosion Fatigue Properties of Medium Carbon High Strength Spring Steel

作　　者：孙曼丽[1] 惠卫军[1] 张代明[2] 董瀚[1] 翁宇庆[1] 

机构地区：[1]钢铁研究总院先进钢铁材料技术国家工程研究中心,北京100081 [2]昆明理工大学材料与冶金学院,昆明650093

出　　处：《特殊钢》2008年第4期52-54,共3页Special Steel

基　　金：国家重点基础研究发展规划项目资助(973)(2004CB619104)

摘　　要：采用加速腐蚀(5%NaCl盐雾)试验和旋转弯曲疲劳试验,研究了0.52%～1.00%Ni对2000 MPa级中碳弹簧钢NHS(%:0.44～0.45C、1.95～2.08Si、0.68～0.70Mn、0.90～0.92Cr、0.14～0.15V)腐蚀疲劳性能的影响。结果表明,增加NHS钢中的M含量,腐蚀坑深度降低,在5%NaCl水溶液中钢的点蚀电位增加,从而导致腐蚀疲劳强度提高。与传统的60Si2CrVA弹簧钢相比,NHS弹簧钢呈现出良好的耐腐蚀疲劳性能。The effect of 0. 52 - 1.00 Ni on corrosion fatigue properties of 2 000 MPa grade medium carbon spring steel NHS （0. 44 -0.45C, 1.95 -2.08Si, 0. 68 -0. 70Mn, 0. 90 -0. 92Cr, 0. 14 -0. 15V） has been studied by using accelerated corrosion （5% NaCl salt spray） test and rotating bending fatigue test. Results indicated that with increasing the Ni content in steel NHS, the depth of corrosion pits in steel decreased and the corrosion pitting potential of steel in 5% NaCl aqueous solution increased as a result to increase the corrosion fatigue strength and life of the steel. As compared with conventional spring steel 60Si2CrVA, the spring steel NHS presented better anti-corrosion fatigue properties.

关 键 词：NI 中碳高强度弹簧钢 腐蚀疲劳 

分 类 号：TG142.15[一般工业技术—材料科学与工程]