Iron carbon diagram pdf nptel

Fcc is a more close packed structure yet solubility of carbon in austenite which is fcc is higher. Compulsory,2 marks will be given from this iron carbon diagram theory in any exam. At this point we only consider the area of the steel with a carbon content up to 2% maximum. The fec phase diagram is a fairly complex one, but we will only consider the steel part of the diagram, up to around 7% carbon. Now, we consider only a part of fefe3c diagram referring to steel. The ironiron carbide fefe3c phase diagram in their simplest form, steels are alloys of iron fe and carbon c. So the incubation period for the austenite to pearlite increases i. The iron carbon diagram also called the iron carbon phase or equilibrium diagram is a graphic representation of the respective microstructure states depending on temperature y axis and carbon content x axis. Due to the high lattice distortion, martensite has high residual stresses. Nptel metallurgy and material science principles of.

Gate metallurgical engineering iron carbide phase diagram. Mod01 lec23 ironcarbon phase diagram video lecture by prof. The effects of carbon on certain characteristics of pure iron are shown in fig. The ironcarbon diagram also called the ironcarbon phase or equilibrium diagram is a graphic representation of the respective microstructure states depending on temperature y axis and carbon content x axis. Mix play all mix nptelhrd youtube timetemperaturetransformation ttt diagram duration. The high lattice distortion induces high hardness and strength to the steel.

Autoplay when autoplay is enabled, a suggested video will automatically play next. Phase diagrams in materials science and engineering unit 8. With frame as pdf go to science of welding steel go to 8. Factors affecting ttt diagram composition of steela carbon wt%, b alloying element wt% grain size of austenite heterogeneity of austenite carbon wt%as the carbon percentage increases a 3 decreases, similar is the case for a r3, i. Mod01 lec23 ironcarbon phase diagram tutorial of principles of physical metallurgy course by prof r. When molten cast iron solidifies some of the carbon precipitates as graphite, forming tiny, irregular flakes within the crystal structure of the metal. Free cementite is found in all steel containing more than 0. At this point we only consider the area of the steel with a. Cngco com wiring diagrams ih 20424 2424 pdf iron carbon phase diagram martensite iron carbon equilibrium diagram video 5.

Cementite is a chemical compound of carbon with iron and is known as iron carbide fe3c. The actual ironcarbon diagram is far larger than the part shown here. Cast iron is an alloy of carbon and iron and other alloying elements e. Please see all questions attached with the last module. Iron carbon phase diagram with detailed explanation. The fec phase diagram is a fairly complex one, but we will only consider the steel part of the. The fec phase diagram is a fairly complex one, but we will only consider the steel part of. Iron carbon equillibrium diagram with explanation youtube. Ghosh,department of metallurgy and material science,iit kharagpur. Gray iron gray iron was the original cast iron, and is an iron alloy characterized by its relatively high carbon content usually 2% to 4%. Ironcarbon phase diagram shown in figure16 is not a complete diagram. Fe3c iron carbide called cementite because it is hard. If the percentage of the carbon is in the range of 0 to 2. The iron iron carbide fefe3c phase diagram in their simplest form, steels are alloys of iron fe and carbon c.

However, ductility is loss martensite is too brittle and a post heat treatment is. This is a questionnaire with answers covering all the modules and. The actual iron carbon diagram is far larger than the part shown here. In their simplest form, steels are alloys of iron fe and. Introduction to materials science and engineering 71,568 views. Mse 300 materials laboratory procedures university of tennessee, dept. Equilibrium phase diagrams represent the relationships between temperature and.