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高氮奥氏体不锈钢室温疲劳断口分析

Yu LIU,Qi-xun DAI,Kang-min CHEN,Zhi-zhong YUAN,Jian HAN,Pei GAO,Xiao-xia JI

Jinshu Rechuli/Heat Treatment of Metals（2009）

Cited 1|Views29
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Abstract
研究了新型高氮奥氏体不锈钢(24Mn18Cr3Ni0.62N)在室温条件下的拉-拉疲劳行为,并对疲劳断口形貌进行观察分析.结果表明,疲劳曲线(S-N曲线)呈阶梯状下降趋势,平缓区对应载荷应力约为410 MPa为条件疲劳强度;疲劳断口特征明显,可清晰观察到疲劳条带、解理台阶、沿晶裂纹、瓦纳线以及二次裂纹.
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Key words
Fatigue curve,Fatigue test,Fracture morphology,High nitrogen austenitic stainless steel
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