25th November 2019


Is Iron BCC or FCC?

Iron allotropes, showing the differences in lattice structure. The alpha iron (α) is a body-centered cubic (BCC) and the gamma iron (γ) is a face-centered cubic (FCC).

Also question is, is martensite BCC or FCC?

One of the differences between the two phases is that martensite has a body-centered tetragonal (BCT) crystal structure, whereas austenite has a face-centered cubic (FCC) structure. Martensite is not shown in the equilibrium phase diagram of the iron-carbon system because it is not an equilibrium phase.

Is pearlite harder than ferrite?

Bainite consists of very fine and parallel needles of ferrite that are separated by elongated particles of cementite. Bainite is harder and stronger than pearlite, which, in turn, is harder and stronger than spheroidite.
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