0.70C-1.01Si-1.0Mn-0.013Ti-34 ppm N-11 ppm B Steel

Steel name: 0.70C-1.01Si-1.0Mn-0.013Ti-34 ppm N-11 ppm B
Diagram No.: 8199
Type of diagram: TTT
Chemical composition in weight %:
Steel A: 0.70% C, 1.01% Si, 1.01% Mn, 0.003% P, 0.001% S, 0.013% Ti, 34 ppm N
Steel B: 0.70% C, 1.01% Si, 1.00% Mn, 0.003% P, 0.001% S, 0.013% Ti, 34 ppm N, 11 ppm B
Steel group: High carbon steels
Note: Figure shows the TTT diagram of steels A and B. The nose temperature of pearlite transformation can be seen to be about 625°C. The upper bainite area fraction in a temperature range of 600°C or less and below the nose was calculated and compared with the upper bainite area fraction obtained when steel A was isothermally transformed at 500°C.
Reference: Not shown in this demo version.
Toshiyuki Manabe, Shingo Yamasaki, Seiki Nishida, Toshiharu Sugawara, Effect of Boron Addition for on Time Temperature Transformation Behavior in Si Added High Carbon Steels, ISIJ International, 2020, Volume 60, Issue 8, Pages 1796-1802, https://doi.org/10.2355/isijinternational.ISIJINT-2019-725

Transformation Diagram


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