cementite

/si-men-tahyt/US // sɪˈmɛn taɪt //UK // (sɪˈmɛntaɪt) //

水泥岩,水泥石,水门汀,水门汀石

Definitions

n.名词 noun

1
Metallurgy.
- : an iron carbide, Fe3C, a constituent of steel and cast iron, sometimes with part of its iron replaced by another metal, as manganese.

Lastly, there is a definite compound of iron and carbon, iron carbide or cementite, having the formula Fe3C.
Here the mass consists of primary austenite, eutectic austenite and cementite interstratified and pro-eutectoid cementite.
Ferrite and cementite, already described in 10, are the final products of the transformation of austenite in slow-cooling.
The white-hot, solid, but soft mass is now a conglomerate of “primary” austenite, “eutectic” austenite and “eutectic” cementite.
The change from graphite into cementite is supposed to take place as we pass from left to right.