Iron Iron Carbide Phase Diagram
C phase diagram. Component and system a component is defined as pure metals of which an alloy is composed.
Iron Iron Carbide Phase Diagram
The iron iron carbide fe fe 3 c is defined by five individual phases and four invariant reactions.
Iron iron carbide phase diagram. This is the between pure iron and interstitial compound iron carbide fe c containing 667 carbon by weight. O phase transformations between phases with different densities annealing temperatures are relatively low so that useful effects of cold working are not eliminated. Phase equilibria for a 996 wt fe 040 wt c at a temperature just below the eutectoid determine the following a composition of fe 3c and ferrite α b the amount of carbide cementite in grams that forms per 100 g of steel c the amount of pearlite and proeutectoid ferrite α.
The iron iron carbide fe. The iron iron carbide phase diagram and the development of microstructures in steels various microstructures can be developed depending on the carbon content the amount of plastic deformation working and the method of heat treatment. The fe c phase diagram is a fairly complex one but we will only consider the steel part of the diagram up to around 7 carbon.
This graph is known as iron iron carbide equilibrium diagram. Figure 1 shows the equilibrium diagram for combinations of carbon in a solid solution of iron. The iron carbide is called metastable phase.
Five phases are α ferrite bcc fe c solid solution γ austenite fcc fe c solid solution δ ferrite bcc fe c solid solution fe 3 c iron carbide or cementite an inter metallic compound and liquid fe c solution. Examples of heat treatment. 1100 1000 for example lets consider the eutectic point of iron with a 077 c content while it is being.
The left side of the diagram is pure. The diagram shows iron and carbons combined to form fe fe 3 c at the 667c end of the diagram. Therefore iron iron carbide diagram even though technically represents metastable conditions can be considered as representing equilibrium changes under conditions of relatively slow heating and cooling.
The portion of iron carbon alloy system that is of interest is shown in fig. The ironiron carbide fefe3c phase diagram in their simplest form steels are alloys of iron fe and carbon c. Contents levers rule eutectic reactions eutectoid reactions peritectic reactions cu ni phase diagram pb sn phase diagram al si phase diagram iron iron carbide diagram 4.
Iron iron carbide phase diagram pure iron has two crystalline forms one bcc commonly called α iron which remains stable from low temperatures upto 910c 1414f when it changes to fcc called γ iron. Fe fe 3 c phase diagram clickable materials science and metallurgy 4th ed pollack prentice hall 1988.
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