PREDICTION OF MULTIAXIAL CREEP DUCTILITY FOR A USC STEAM TURBINE ROTOR STEEL AT 600℃

摘要：

Prediction of multiaxial creep ductility is conducted on the newly developed 1Cr10NiMoW2VNbN steel for Ultra Supercritical (USC) steam turbine rotors. Creep rupture tests are carried out in use of the smooth specimens under four stress levels at 600℃. An approach for multiaxial creep ductility prediction is proposed on the basis of cavity growth theory. The FE calculations are performed by implementing the proposed model in the userdefined subroutine of ABAQUS software. Numerical simulations for three types of notched bar specimens show that the proposed method can predict well creep performance of the rotor steel under multiaxial stress states.

作者: Huatang Yao Fu-Zhen Xuan Shufang Shen Zhengdong Wang Shan-Tung Tu

作者单位: School of Mechanical and Power Engineering, East China University of Science and Technology,Shanghai 200237, China

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）