0.39C-0.62Si-1.30Mn-0.11V Steel

Steel name: 0.39C-0.62Si-1.30Mn-0.11V
Diagram No.: 4036
Type of diagram: CCT
Chemical composition in weight %: 0.39% C, 0.62% Si, 1.30% Mn, 0.016% P, 0.013% S, 0.11% V, 0.025% Al
Steel group: Medium carbon vanadium microalloyed steels
Note: Microstructures observed after cooling to room temperature, and Continuous Cooling Transformation diagram determined by dilatometry. Start and finish transformation temperatures, under the continuous cooling conditions determined by dilatometry tests, are illustrated in the CCT diagram plotted in Fig. bellow. The hardness andmicrostructures observed after cooling to room temperature at each cooling rate applied are also displayed in this figure. These data indicate that, at low cooling rates of less than 2 C/s, the microstructure is composed of pro-eutectoid ferrite and pearlite.On the other hand, bainite is formed at cooling rates ranging from 5 C/s to 10 C/s, while martensite is observed at the highest cooling rates .
Reference: Not shown in this demo version.

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