M23C6 carbides in Fe-12Cr-0.2C

Figure 1: Fe-12Cr-0.2C transformed 30 min at 775 C. Pearlite-type reaction involving M23C6 (courtesy of Campbell). Optical micrograph 300x.

Figure 2: Fe-12Cr-0.2C transformed 15 min at 750 C. Alloy pearlite. M23C6/ferrite (courtesy of Campbell). Thin-foil electron micrograph. Scale bar: 0.5 µm.

Carbide name: M23C6
Record No.: 1151
Carbide formula: M23C6
Carbide type: M23C6
Carbide composition in weight %: No data
Image type: LM, TEM
Steel name: Fe-12Cr-0.2C
Mat.No. (Wr.Nr.) designation: No data
DIN designation: No data
AISI/SAE/ASTM designation: No data
Other designation: No data
Steel group: Chromium steels
Steel composition in weight %: Fe-12Cr-0.2C
Heat treatment/condition: No data
Note: Once the alloying element concentration reaches a critical level, the cementite will be replaced by another carbide phase. For example, in a chromium, tungsten or molybdenum steel, the complex cubic M23C6 carbide can form, where M can include iron, chromium, molybdenum or tungsten (Figs. 1 and 2).
Links: No data
Reference: Not shown in this demo version.

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