Master Curve of 20MnMoNi55 Steel From Miniature CT Specimens

A scaling approach to size effect modeling of J CDF for 20MnMoNi55 reactor steel in transition temperature region

“…( 7) and ( 15) provide very reasonable CFD estimates well over the range of sizes that can be accurately tested (up to the thickness B ≈ 300÷400 mm) and useful lower-bounds somewhat beyond. The importance of having the reasonablyconservative lower bounds in the data extrapolation range cannot be exaggerated bearing in mind that number of valid tests obtained with miniature specimens is substantially reduced when compared with similar tests conducted on standard specimens [40].…”