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Table 2

Average Vickers hardness (HV 0.2) according to microstructure for the model alloys, using the CCT diagrams. *The value given for the FeCMn bainite is the hardness of the microstructure cooled at 10 °C.s−1, with the least possible martensite.

  FeCMn FeCMo FeCMoMn
Average hardness 433±7 443±4 448±3
Cooling rate interval 100 °C.s−1 to 300 °C.s−1 100 °C.s−1 to 300 °C.s−1 30 °C.s−1 to 300 °C.s−1
Average hardness 240±18* 240±3 305±3
Cooling rate interval 10 °C.s−1 2 °C.s−1 to 30 °C.s−1 0.1 °C.s−1 to 10 °C.s−1
Ferrite + Pearlite
Average hardness 179±4
Cooling rate interval 0.5 °C.s−1 to 5 °C.s−1

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