Effect of cold expansion on fatigue life of anodized Al alloy

摘要：

　　Anodizing treatment can improve corrosion resistance of aluminum alloy but decrease the fatigue life significantly.Introducing cold expansion before anodizing can increase the fatigue life of the specimen with open-hole structure by 2582%than the anodized one.Scanning electron microscopy(SEM)was employed for microstructure and fracture surface observation.Residual stress distribution near the sample hole edge was measured to elucidate the strengthening mechanism.The results revealed that although anodizing treatment decreases the surface integrity,the cold expansion is an effective method to improve the open-hole structure specimen remarkably.

作者: Nan Li Haitao Li Hongtao Liu Changkui Liu

作者单位: AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Beijing Key Laboratory of Aero Structure Department,Shenyang Aircraft Design Research Institute,Shenyang,110035,China

会议类型: 国际会议

会议名称: The 2nd International Symposium on Application of Materials Science and Energy Materials (SAMSE 2018) 第二届材料科学应用与能源材料国际研讨会2018年

会议地点: 上海

会议语种:英文

页码: 1-7

在线出版日期: 2018-12-17（万方平台首次上网日期，不代表论文的发表时间）