Damage modelling: the current state and the latest progress on the development of creep damage constitutive equations for high Cr steels

Figures & data

Figure 1. Dependence of minimum creep strain rate on stress for 9Cr-1Mo-V-Nb [4].

Figure 2. Experimental of creep-rupture data for the 9Cr-1Mo-VNb steel at 600 °C [4].

Figure 3. Stress-dependent multi-axial failure criterion based on long-term strength of the 9Cr-1Mo-VNb steel at 600 °C [4].

Figure 4. Classification of accumulation character types for the scalar damage parameter W according to Kachanov-Rabotnov concept [4].

Figure 5. Isochronous rupture loci for Hayhurst formulation [37].

Figure 6. Ratios of strain at failure of Hayhurst’s formulation [38].

Grades EA. Development of a creep-damage model for non-isothermal long-term strength analysis of high-temperature components operating in a wide stress range; 2008 Jul; Zentrum f¨ur Ingenieurwissenschaften der Martin-Luther-Universit¨at Halle-Wittenberg (the document was downloaded from internet); 2008.

 Google Scholar

Ogata T, Sakai T, Yaguchi M. Damage assessment method of P91 steel welded tube under internal pressure creep based on void growth simulation. Int J Press Vessels Pip. 2010;87:611–616.10.1016/j.ijpvp.2010.08.009

 Google Scholar

Xu Q. The development of validation methodology of multi-axial creep damage constitutive equations and its application to 0.5Cr0.5Mo0.25 V ferritic steel at 590 °C. Nucl Eng Des. 2004;228(1–3):97–10610.1016/j.nucengdes.2003.06.021

 Google Scholar