SIMULATION OF WELD THERMAL CYCLE USING THE MODEL OF CARBONITRIDE PARTICLES PRECIPITATION

摘要

Based on the chasteal nucleation theory, the kinetic precipitation model of carbon - nitride particles in weld HAZ is proposed. Using the model,welding simulation technology and the quantitative metallo- graphic analysis,the precipitation transformation temperatue (PTT) curve is obtained.The data from the simulated welds are in good apreement with the value that the PTT curves predicated.