cementite

[ si-men-tahyt ]

Phonetic (Standard)IPA

noun

, Metallurgy.

an iron carbide, Fe 3 C, a constituent of steel and cast iron, sometimes with part of its iron replaced by another metal, as manganese.

cementite

/ sɪˈmɛntaɪt /

the hard brittle compound of iron and carbon that forms in carbon steels and some cast irons. Formula: Fe 3 C

First recorded in 1885–90; cement + -ite ¹

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.

April 24, 2024gallimaufry

[gal-uh-maw-free ]

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