一种新型高氮奥氏体不锈钢高周疲劳性能的研究  

Research on High Cycle Fatigue Behavior of a High-nitrogen Austenitic Stainless Steal

作　　者：陈曦[1] 戴起勋[1] 陈康敏[1] 洪彪[1] 陈华钢[1] 

机构地区：[1]江苏大学材料科学与工程学院,镇江212013

出　　处：《材料导报（纳米与新材料专辑）》2008年第1期232-234,共3页

基　　金：高等学校博士学科点专项科研基金资助课题(20050299008)

摘　　要：研究了一种新型高氮奥氏体不锈钢在室温条件下的高周疲劳性能。对疲劳性能曲线进行了拟合分析及回归方程方差分析。结果表明,中值寿命的疲劳性能曲线能用指数函数e^(0.01842S)N=10^(9.4141)表示。用SEM进行了断口观察,分析结果显示:在低载荷的情况下,断口上准解理断裂的特征很明显;随着载荷的增大,准解理断裂的特征逐渐消失,取而代之的是无特征平面和疲劳条纹。High cycle fatigue property of a high-nitrogen austenitic stainless steel is studied at room tempera ture. The linear correlation and variance of regression equation of fatigue curve are analyzed. The results indicate that the fatigue curve can be expressed by exponential function e^0.01842SN=10^9.4151. SEM is used to study the fractutral characterizations. The results indicate that feature of quasi-cleavage fracture is very obvious when the loading is low. As the loading grows, the feature of quasi-cleavage fracture can not be found easily, but undistinguishable planes and fatigue markings are very obvious.

关 键 词：高氮奥氏体不锈钢 疲劳性能 准解理断裂 

分 类 号：TG142[一般工业技术—材料科学与工程]