M11 Steel

Steel name: M11
Diagram No.: 5037
Type of diagram: CCT
Chemical composition in weight %: 5037-2.jpg">See the table.
Steel group: Martensitic steels
Note: The continuous cooling transformation (CCT) diagram9) of M11 cladding in the cooling rates ranging from 50 to 18 000 K/h is shown in Fig. In this diagram, martensite start (Ms) and finish (Mf) lines and ferrite start (Fs) and finish (Ff) lines are shown. M11 and Mm13 was cooled at rate of approximately 5 000 K/h from austenite and tempered at 1 073 K for 1 h. Thus M11 and Mm13 claddings have tempered martensite. On the other hand, the microstructure of MS11 cladding is coarse ferrite grains of around 10m m size and carbide, since its cooling rate is 5 K/h that intersect with only Fs and Ff lines.
Reference: Not shown in this demo version.

Transformation Diagram

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