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What is Mic-rostructure of iron-iron carbide phase diagram?
Mahedi63
the iron iron carbide phase diagram does not have a single microstructure, it has different microstructures depending on the carbon content of the steel.
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∙ 14y ago
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Why phase diagram is called equilibrium diagram?
A phase diagram of the equilibrium relationship between temperature, pressure, and composition in any system.
Why beta is not there in iron carbon phase diagram?
actually there is no difference in beta phase and alpha phase when we talk about crystal structure of iron. beta phase has the same structure as the alpha phase. the olny difference is the magnetic properties which are absent in beta phase due to the expanded lattice parameter.
Is steel a composite material?
Steel is not usually considered a composite, as it is macroscopically homogeneous.However, some steel types, including "classical" iron-carbon steel, can be considered as metal-matrix composites, as they contain a second phase... sometimes.For simple iron-carbon steel, cooling after high-temperature forging or heat treatment will precipitate out iron carbide (cementite, Fe3C) particles and leave a carbon-depleted iron matrix. If cooling is slow, coarse bands of iron / cementite will form, a microstructure called pearlite, which is not very hard.If the cooling speed is increased, the pearlite will become finer (finer bands), until another composite microstructure, with more acicular patterns forms, called bainite. This is also heterogeneous, i.e. a composite of carbon-poor iron and cementite.Going to very fast cooling (quenching) will result in a single-phase (not composite) material called martensite. Here the carbon doesn't have time to "exit the iron", and this martensite phase is very hard, but also normally too brittle. Hence, it is normally re-heated to 200-400°C, a process called "tempering", where again some cementite precipitates out: it becomes a composite again, yielding a somewhat softer, but much tougher material.Alloyed steels (i.e. with other elements than just iron and carbon) strongly vary in behaviour:Normal non-magnetic "austenitic" stainless steels are single-phase, not composites.Tool steels (high carbon + carbide-forming alloying elements) are definitely composites. They form a lot of hard particles, such as chromium carbides, that impart good resistance against wear.Magnetic Fe-Cr stainless steels may be essentially single-phase (very low carbon, better corrosion resistance) or also contain carbides (higher carbon, better strength)So-called "maraging" (martensite aging) steels may achieve both high strength and good corrosion resistance. Here, strength is imparted by an "aging" treatment around 500°C, to precipitate out so-called "intermetallic" particles, making it again a "composite material".These considerations also apply to many other metallic alloys, based on metals such as aluminium, titanium or nickel. In most cases, the strongest variants are engineered to be "microcomposites" or "nanocomposites", i.e. they precipitate out intermetallic particles during heat treatment.The reason behind such engineering is that the particles block dislocations, which are responsible for plastic deformation of metals. For each alloy, there is an optimum heat treatment to achieve the best "blocking ability" for dislocations, and thus the highest strength.
What is difference between line current and phase current?
A phase current is the current passing through a phase, whereas a line current is the current flowing through a line.In the case of a balanced delta-connected load, IL = 1.732 IP. In the case of a balanced star-connected load, IL = IP.For unbalanced loads, these relationships don't hold true, and must be individually calculated.
What are second phase particles?
During precipitation hardening, few very small and uniform particles are added through compacting in order to improve the strength of the lattice. These particles are known as second phase particles.
Is pearlite a phase or a microstructure?
No
What is DP steel?
dual phase steel is a high strength steel that has a ferrite and martensitic microstructure
What are phase daigram?
Phase diagram are also known as thermal equilibrium diagram or a consistutional diagram 1. Different uses of phase diagram are 2. prediction of phase 3. amount of phase 4.composition of phase
Phase diagram for urea-benzoic acid?
phase diagram of urea and benzoic acid
What science uses phase diagram?
The branches of science that use phase diagram are physical chemistry, mineralogy, and materials science. Phase diagram is also used in the field of mineralogy.
What is a phase diagram?
a diagram showing the effects of temperature and pressure on phase
Why phase diagram is called equilibrium diagram?
A phase diagram of the equilibrium relationship between temperature, pressure, and composition in any system.
What is phase diagram in series LCR circuit?
diagram in series lcr circuit
The equilibrium lines on a phase diagram meet at the what?
meet at the critical point on the diagram.
What are the various phases exist on Fe-Fe3C diagram?
See this phase diagram.
Drawing block diagram of single phase capacitor start motor?
Drawing block diagram of single phase capasitor start motor?
What does a phase diagram show for a substance?
A phase diagram shows if a substance is going to be a solid gas, or liquid at a combination of pressure and temperature. It states what phase of matter a substance is at a specific temperature.
