04.1 - Aerospace Grade Materials, Structural Analysis, Fatigue and Damage Tolerance
MODELING CREEP DEFORMATION AND PREDICTING RUPTURE LIFE OF STRESS-CONCENTRATED DZ411 SUPERALLOY COMPONENTS USING A THREE-STAGE CREEP FRAMEWORK
Z. Li¹, D. Wei¹, W. Zeng, Chinese Academy of Sciences, China; K.K. Alynur¹, X. Liu¹, B. Zhao¹, S. Li¹, L. Ma, KUCH ENERGY Technology Co., Ltd., China; S. Yang¹; ¹Beihang University, China
This study investigated the creep deformation and rupture life of circumferentially notched round-bar specimens made of the DS nickel-based superalloy DZ411 under various temperatures and loading conditions at elevated temperatures. Finite element analyses based on a three-stage creep constitutive model were performed and validated against corresponding high-temperature creep rupture tests.