Elasto-Plastic FEM Analysis of Residual Stress in Spun Tube  

作　　者：Fuan HUA, Yuansheng YANG, Dayong GUO, Wenhui TONG and Zhuangqi HUInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 

出　　处：《Journal of Materials Science & Technology》2004年第4期379-382,共4页材料科学技术（英文版）

基　　金：the National Natural Science Foundation of China(No.59995444).

摘　　要： The residual stress distribution of Hastelloy C corrosion-resistant alloy tubes after power spinning was simulated with the elasto-plastic finite element method combining with the element birth and death technique, the influences of spinning parameters on the distribution of the residual stress were investigated in detail, and the formation mechanism of residual stress during tube spinning was discussed. Based on the calculation of the residual stress, the reasons for annealing cracks on the spun tube during interpass heat treatment were explored. The simulation results and the characteristics of annealing cracks show that the circumferential residual tensile stress is a main factor to cause the annealing cracks.The residual stress distribution of Hastelloy C corrosion-resistant alloy tubes after power spinning was simulated with the elasto-plastic finite element method combining with the element birth and death technique, the influences of spinning parameters on the distribution of the residual stress were investigated in detail, and the formation mechanism of residual stress during tube spinning was discussed. Based on the calculation of the residual stress, the reasons for annealing cracks on the spun tube during interpass heat treatment were explored. The simulation results and the characteristics of annealing cracks show that the circumferential residual tensile stress is a main factor to cause the annealing cracks.

关 键 词：Residual stress Power spinning Annealing cracks Elasto-plastic FEM Element birth and death 

分 类 号：TG376[金属学及工艺—金属压力加工]