Residual stress analysis of multi-pass cold spinning process

作     者：Zixuan LI Xuedao SHU Zixuan LI;Xuedao SHU

作者机构：Faculty of Mechanical Engineering&MechanicsNingbo UniversityNingbo 315211China Zhejiang Provincial Key Laboratory of Part Rolling TechnologyNingbo UniversityNingbo 315211China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2022年第35卷第3期

页      面：259-271页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 082503[工学-航空宇航制造工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the Zhejiang Provincial Natural Science Foundation,China(No.LZ17E050001) the National Natural Science Foundation of China(No.51975301 and No.52075359)。 

主　　题：Cold spinning process Data fitting Grain structure Potential crack Residual stress Weighted least square method 

摘      要：Uncontrolled residual stresses have significant effects on the service time and defects of the spun parts.Nowadays,X-Ray Diffraction(XRD)method has been widely used in the residual stress measurement of industry products with different forming processes.The calculated residual stress is usually obtained from the data fitting slope of strain and angle with Ordinary Least Squares(OLS)method.But this fitting method is not always suitable for the big fluctuant data.In this paper,the Weighted Least Square(WLS)method is used for the data fitting and compared with the OLS method.The nickel-based superalloy GH3030 and iron-based superalloy GH1140 are applied in the multi-pass cold spinning experiments.The residual stress distributions of normal,potential crack and wrinkle workpieces are discussed with the grain structure.The results show that WLS method has better goodness of fit compared with OLS method.The residual stress distributions have special relationship with potential crack,wrinkle workpiece and grain structure.