TY - JOUR TI - Numerical analysis of thermal stresses in welded joint smade of steels X20 and X22 AU - Mladenović Saša M AU - Šijački-Žeravčić Vera M AU - Bakić Gordana AU - Lozanović-Šajić Jasmina V AU - Rakin Marko P AU - Đurdjević Andrijana A AU - Đukić Miloš JN - Thermal Science PY - 2014 VL - 18 IS - 11 SP - 121 EP - 126 PT - Article AB - Stress calculation of steam pipeline is presented, focused on the welded joint. Numerical calculation was performed using the finite element method to obtain stress distribution in the welded joint made while replacing the valve chamber. Dissimilar materials were used, namely steel 10CrMoV9-10 according to EN 10216-2 for the valve chamber, the rest of steam pipeline was steel X20, whereas the transition piece material was steel X22. Residual stresses were calculated, in addition to design stresses, indicating critical regions and necessity for post-weld heat treatment.