An Analysis Finite Element for Elasto-Plastic Stresses Considerating Phase Transformation at the Quenching Process(I) - From Austenite to Pearlite -

퀜칭과정에서 상변태를 고려한 탄소성 열응력의 유한요소해석(I) -오스테나이트에서 퍼얼라이트로의 변태-

Constitutive relation of thermoelasto-plastic material undergoing phase transformation during quenching process were developed on the basic of continuum thermodynamics. The metallic structure, temperature and residual stresses distributions were numerically calculated by the finite element technique. The metallic structure were defined by transformation from austenite to pearlite and characterized as a fuction of thermal history and mixture rule of phase. On the distribution of thermal stress along the radial direction, axial and tangential stresses are compressive in the surface, and tential in the inner part. Radial stress is tensile in the whole body. The reversion of residual stress takes plase at 11.5~15.5mm from the center.