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Creep Failure Simulation in 9%Cr Heat-Resistant Steel Joint Based on the Continuum Damage Mechanics

Journal Article


Abstract


  • Creep failure in a typical 9%Cr steel joint (i.e., T92 welded joint) was simulated based on the continuum damage mechanics (CDM) with a modified Kachanov–Rabotnov constitutive equation. The damage evolution in T92 welded joint with various creep times can be recognized as a continual increase of the damage factor (D). After creep for 1700 h, the D values of all elements in the fine-grained heat affected zone grew to 1.0, implying that the welded joint underwent failure. Besides, the simulation results on the creep failure life were in good agreement with the creep fracture tests, indicating that the CDM effectively predicted the creep life and creep damage of the 9%Cr steel welded joint under study.

Publication Date


  • 2022

Citation


  • Wang, X., Li, H. Y., Wang, C., & Zhang, D. (2022). Creep Failure Simulation in 9%Cr Heat-Resistant Steel Joint Based on the Continuum Damage Mechanics. Strength of Materials. doi:10.1007/s11223-022-00430-2

Scopus Eid


  • 2-s2.0-85137432994

Web Of Science Accession Number


Abstract


  • Creep failure in a typical 9%Cr steel joint (i.e., T92 welded joint) was simulated based on the continuum damage mechanics (CDM) with a modified Kachanov–Rabotnov constitutive equation. The damage evolution in T92 welded joint with various creep times can be recognized as a continual increase of the damage factor (D). After creep for 1700 h, the D values of all elements in the fine-grained heat affected zone grew to 1.0, implying that the welded joint underwent failure. Besides, the simulation results on the creep failure life were in good agreement with the creep fracture tests, indicating that the CDM effectively predicted the creep life and creep damage of the 9%Cr steel welded joint under study.

Publication Date


  • 2022

Citation


  • Wang, X., Li, H. Y., Wang, C., & Zhang, D. (2022). Creep Failure Simulation in 9%Cr Heat-Resistant Steel Joint Based on the Continuum Damage Mechanics. Strength of Materials. doi:10.1007/s11223-022-00430-2

Scopus Eid


  • 2-s2.0-85137432994

Web Of Science Accession Number