Fe철의 상태도

소개글

A phase diagram in physical chemistry, engineering, mineralogy, and materials science is a type of chart used to show conditions at which thermodynamically distinct phases can occur at equilibrium. (영문자료)

목차

What`s the “Fe” ?
Metallic Bonds (Free Electron)
Crystal Structure (BCC, FCC, etc..)
Transformations (Magnetic & Polymorphic)

What`s the “C” ?
Effect of Carbon
Fe3C (Cementite)

Phase diagram
Factor of equilibrium phase diagram
Invariant reaction

본문내용

Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade.
Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten.
Carbon and other elements act as a hardening agent, preventing dislocations in the iron atom crystal lattice from sliding past one another. Varying the amount of alloying elements and the form of their presence in the steel (solute elements, precipitated phase) controls qualities such as the hardness, ductility, and tensile strength of the resulting steel. Steel with increased carbon content can be made harder and stronger than iron, but such steel is also less ductile than iron.

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