Using new data analysis procedures, 100000h creep strengths are estimated by extrapolation of stress rupture values with creep lives, 5000h for Grade 22 tube as well as for annealed/ tempered and quenched/tempered plates. In addition to allowing accurate prediction of long term strengths, the resulting property sets can be discussed sensibly in terms of the deformation and damage processes controlling creep and creep fracture.

 

M. T. Whittaker and B. Wilshire

Materials Science and Technology, Volume 27, Number 3, March 2011 , pp. 642-647(6) doi: 10.1179/026708310X520529