Prediction of Welding Residual Stress in 2.25Cr-1Mo Steel butt welded joint with considering Solid-state Phase Transformations
A computational approach based on thermal elastic plastic finite element method was developed for predicting welding residual stress with considering solid-state phase transformation. In this approach, the JMAK equation was used to simulate the formation of diffusive phase transformation, and the K-M relationship was employed to model the austenite-martensite change. Meanwhile, the additive rule based on phase fractions was adopted to describe the variations of mechanical properties such as yield strength and thermal expansion coefficient during the welding thermal cycles. Using the developed approach, welding residual stress distribution in a 2.25Cr-1Mo steel plate joint was computed. Based on the simulation results, the influences of solid-state phase transformation were discussed.
Computational approach Numerical simulation Phase transformation Welding reidual stress
Dean Deng Yangang Tong
College of Materials Science and Engineering, Chongqing University, 174 Shazheng Street, Shapingba, Chongqing, 400045, China
国际会议
济南
英文
1-6
2012-08-24（万方平台首次上网日期，不代表论文的发表时间）