Some features and potentialities of the generalized analysis of creep-rupture data for metallic materials

Methodological aspects of creep prediction for heat-resistant steels and alloys. Part 2. Prediction over wide ranges of temperatures and loading times

“…They are obtained from the data of experiments of rather limited duration, thus, they require essential refinements. Table 1 summarizes creep-rupture characteristics calculated by reference data [1] and predicted by BDM-1 [4,7]. The base diagram method was built upon the base diagram equation where ′ σ t is the current stress, MPa, σ 1 is the 1-h fracture stress, MPa, and t is the creep-rupture life, h (numerical values of the constants are valid for the above stress and life dimensions).…”

“…The application of such a method to data analysis of specially chosen steels and alloys may be considered as systems analysis. In line with this method data [1] were analyzed, then they were refined with data [2,3] using the base diagram method (BDM) [4][5][6][7] and the equation of creep [8,9]. It should be emphasized that the examined problem lies in more widely held possibilities of refining predicted characteristics with the use of the proposed method of calculations rather than in sufficiently accurate estimation of creep-rupture characteristics over wide temperature and stress ranges.…”