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Lamellar structure of ferrite and cementite
Pearlite is a two-phased, lamellar (or layered) structure composed of alternating layers of ferrite (87.5% by mass) and cementite (12.5% by mass) that
Pearlite
Process of heating something to alter it
called pearlite. Since pearlite is harder than iron, the degree of softness achievable is typically limited to that produced by the pearlite. Similarly
Heat_treating
Temperature graphs plotted against time
example the beginning of pearlitic transformation is represented by the pearlite start (Ps) curve. This transformation is complete at Pf curve. Nucleation
Isothermal transformation diagram
Isothermal_transformation_diagram
Steel in which the main interstitial alloying constituent is carbon
carbide finely dispersed and produce a fine grained pearlite and cooling slowly will give a coarser pearlite. Cooling a hypoeutectoid steel (less than 0.77
Carbon_steel
Alloy of iron and carbon
ferrite, precipitate simultaneously producing a layered structure called pearlite, named for its resemblance to mother of pearl. In a hypereutectoid composition
Steel
Type of alloy steel
alter the microstructure of carbon steels, which is usually a ferrite-pearlite aggregate, to produce a very fine dispersion of alloy carbides in an almost
High-strength_low-alloy_steel
Iron-carbon alloy
Nickel is one of the most common alloying elements, because it refines the pearlite and graphite structures, improves toughness, and evens out hardness differences
Cast_iron
Plate-like microstructure in steels
transformation of austenite to bainite (125–550 °C) is between those for pearlite and martensite. In fact, there is no fundamental lower limit to the bainite-start
Bainite
Process of heat treating used to increase the toughness of iron-based alloys
between pearlite and martensite. In normalizing, both upper and lower bainite are usually found mixed with pearlite. To avoid the formation of pearlite or
Tempering_(metallurgy)
Type of steel crystalline structure
and ending at 450 °C takes place in 0.7 seconds (a rate of 430 °C/s) no pearlite will form, and the steel will be martensitic with small amounts of retained
Martensite
Form of iron
Depending on alloy composition, a layering of ferrite and cementite, called pearlite, may form. If the rate of cooling is very swift, the carbon does not have
Austenite
Type of steel used in Middle Eastern swordmaking
tensile strength of 965 MPa. These results are likely due to the finer pearlite spacing in the Damascus steel, refining the microstructure. The elongation
Damascus_steel
Heat treatment that alters the properties of a material
into bainite or martensite, but rather have it completely transform to pearlite and ferrite or cementite. This means that steels that are very hardenable
Annealing_(materials_science)
Rapid cooling of a workpiece to obtain certain material properties
at a slow rate. Pearlite is not an ideal material for many common applications of steel alloys as it is quite soft. By heating pearlite past its eutectoid
Quenching
Eutectic mixture of austenite and cementite
separates from austenite as the metal cools) and (with slow cooling) of pearlite. The pearlite results from the eutectoidal decay of the austenite that comes from
Ledeburite
Steel alloy resistant to corrosion
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Stainless_steel
Visible effect on Japanese blades
metal when it is plunged into the water and allows the steel to turn into pearlite, a soft structure consisting of cementite and ferrite (iron) laminations
Hamon_(swordsmithing)
Crystal patterns found in some meteorites
composition (~ 0.8% carbon). This happens as long needles of ferrite within the pearlite. Widmanstätten structures form in many other metals as well. They will
Widmanstätten_pattern
Flexible form of cast iron
roughly spherical aggregates of graphite, leaving a matrix of ferrite or pearlite according to the exact heat treatment used. Three basic types of malleable
Malleable_iron
Chemical element with atomic number 26 (Fe)
of pearlite and martensite. The end product below 0.8% carbon content is a pearlite-αFe mixture, and that above 0.8% carbon content is a pearlite-cementite
Iron
Technique used in heat treating
very hard martensite while the rest cools more slowly and becomes softer pearlite. The other is heating only part of the steel very quickly to red-hot and
Differential_heat_treatment
Compound of iron and carbon
ferrite, the other product of austenite, forms a lamellar structure called pearlite. While cementite is thermodynamically unstable, eventually being converted
Cementite
Alloy of iron and carbon
strength gray irons, up to class 40, have lower carbon equivalents and a pearlite matrix. Gray iron above class 40 requires alloying to provide solid solution
Gray_iron
Metal heat treatment process
martensite, while the core remains soft and tough as a ferritic and/or pearlite microstructure. This manufacturing process can be characterized by the
Carburizing
Type of steel with a ferritic–martensitic microstructure
strengthening in ferrite, while both stabilize the austenite), Cr & Mo (to retard pearlite or bainite formation), Si (to promote ferrite transformation), V and Nb
Dual-phase_steel
Structure composed of thin alternating layers of different materials
as in rapid cooling of eutectic (such as solder) or eutectoid (such as pearlite) systems. Such conditions force phases of different composition to form
Lamellar_structure
Iron alloy with a very low carbon content
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Wrought_iron
Cultural forging process for bladed weapons
becomes martensite, which is very hard but brittle. Slower and it becomes pearlite, which bends easily and does not hold an edge. To maximize both the cutting
Japanese_swordsmithing
Different forms of the element iron
carbide). The mixture adopts a lamellar structure called pearlite. Since bainite and pearlite each contain α-Fe as a component, any iron-carbon alloy will
Allotropes_of_iron
Mixture or metallic solid solution composed of two or more elements
(slowly cooled) steel forms a heterogeneous, lamellar microstructure called pearlite, consisting of the phases cementite (light) and ferrite (dark). Bottom
Alloy
Type of iron oxide
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Rust
Iron column in Madhya Pradesh, India
mass) Carbon Phosphorus Manganese Silver Portion containing pearlite 0.683% 0.693% 0.013% Portion containing pearlite and ferrite 0.276% 0.851% 0.075%
Dhar_iron_pillar
Mixture with a lower melting point than its constituents
to produce ferrite and cementite, often in lamellar structures such as pearlite and bainite. This eutectoid point occurs at 723 °C (1,333 °F) and 0.76
Eutectic_system
Metallurgical process
after quenching automatically tempers the austenitic core to ferrite and pearlite on the cooling bed. These bars therefore exhibit a variation in microstructure
Thermomechanical_processing
Depth to which a metal is hardened after being submitted to a thermal treatment
The softer core is some combination of ferrite and cementite, such as pearlite. The hardenability of ferrous alloys, i.e. steels, is a function of the
Hardenability
Steel whose surface rust inhibits further rusting
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Weathering_steel
Type of steel
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Crucible_steel
Japanese swordsmith (c.1264–1343)
brought to perfection the art of "nie" (錵; martensitic crystals embedded in pearlite matrix, thought to resemble stars in the night sky). Masamune studied under
Masamune
Iron found naturally on Earth that is neither in an ore nor from a meteorite
respond well to cold working. The structure of type 1 consists mainly of pearlite and cementite or cohenite, with inclusions of troilite and silicate. The
Telluric_iron
Samurai sword
allowed to cool slowly, its structure changes into a mixture of ferrite and pearlite which is softer than martensite. This process also creates the line down
Katana
Type of cast iron
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Ductile_iron
Solution of nitric acid and alcohol
SEM micrograph of lamellar pearlite in a eutectoid (0.8% carbon) steel after annealing. Nital etch.
Nital
Subset of tool steels
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
High-speed_steel
Steel known for strength and toughness
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Maraging_steel
Research of materials
Microstructure of pearlite
Materials_science
Phase of iron only stable at high pressures
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Hexaferrum
Long bladed weapon
networks of iron carbides described as a globular cementite in a matrix of pearlite. The use of Damascus steel in swords became extremely popular in the 16th
Sword
Isolated massif in Sardinia, Italy
tools, and was later traded outside the island. There are also quarries of pearlite. Monte Arci is renowned for its importance as one of the primary sources
Monte_Arci
Prefecture-level city in Inner Mongolia, People's Republic of China
reserves. Non-metal minerals include limestone, marble, fluorspar, silica, pearlite, bentonite etc. In agricultural and animal husbandry products, besides
Chifeng
step quenching, at a rate fast enough to avoid the formation of ferrite, pearlite, or bainite. In the martempering process, austenitized metal part is immersed
Martempering
Variety of steel
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Spring_steel
Type of tool steel
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Silver_steel
Type of traditionally made sword from Japan
razor-like sharpness. The thickly coated back cools more slowly retaining the pearlite steel characteristics of relative softness and flexibility. The precise
Japanese_sword
Type of steel with small amounts of alloying elements
than Q&T steels because of their more uniform hardness and their ferrite-pearlite microstructure. Because microalloyed steels are not quenched and tempered
Microalloyed_steel
Steel alloyed with a variety of elements
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Alloy_steel
Materials well-suited to be made into tools
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
Tool_steel
Metal forming process
distribution of various transformation products (such as ferrite, austenite, pearlite, bainite, and martensite in steel); inducing precipitation hardening; and
Rolling_(metalworking)
Steel alloy with small amount of boron
retardation of austenite decomposition to softer bainite, ferrite, or pearlite structures on cooling from an austenitization treatment. The presence of
Boron_steel
Standard alloy numbering system for steel grades
Ferrite Austenite Cementite Martensite Graphite Microstructures Spheroidite Pearlite Bainite Ledeburite Tempered martensite Widmanstätten structures Classes
SAE_steel_grades
(沸え) – small distinct crystalline particles due to martensite, austenite, pearlite or troostite that appear like twinkling stars. nihontō (日本刀, Japanese sword)
Glossary_of_Japanese_swords
clinopyroxene. Symplectite formation is important in metallurgy: bainite or pearlite formation from the decomposition of austenite, for example. Symplectites
Symplectite
Base material for photographic emulsions
Roósz, A. (February 1984). "Measurement of the Interlamellar Spacing of Pearlite". Metallography. 17 (1): 1–17. doi:10.1016/0026-0800(84)90002-8. ISSN 0026-0800
Cellulose_acetate_film
Topics referred to by the same term
Company of San Antonio, Texas, US Perlite, an amorphous volcanic glass Pearlite, a two-phased structure in steel This disambiguation page lists articles
Pearl_light
Solid-state welding process
transformations structure. For example, in steel between austenite, ferrite, pearlite, bainite, cementite, and martensite, (See: Iron-carbon phase diagram).[citation
Friction_welding
Heat treatment in ferrous materials
enough to avoid the formation of pearlite. The specific cooling rate that is necessary to avoid the formation of pearlite is a product of the chemistry of
Austempering
French metallurgical engineer (1904–2004)
Microstructure of Bainite, Pearlite and Tempered Martensite in Steel, Proceedings ASTM Vol. 55 (1955) Electron Microstructure of Bainite, Pearlite and Tempered Martensite
Laurence_Delisle_Pellier
Prominent 20th century gangster and mine owner
Greek mining industry, notably investing in bauxite, barite, bentonite, pearlite, and gold mines. Their largest mining company was called Bauxites Parnasse
Elias_Eliopoulos
(hamon) small distinct crystalline particles due to martensite, austenite, pearlite or troostite that appear like twinkling stars temper line (hamon) of the
List of National Treasures of Japan (crafts: swords)
List_of_National_Treasures_of_Japan_(crafts:_swords)
Railway line in Argentina and Chile
trains transporting minerals such as lithium carbonate, borax, butane, pearlite, salt, ulexite, and brine. The most famous service is the sightseeing Tren
Salta–Antofagasta_railway
District of Karnataka, India
industries in Shimoga district. Foundry activity has a long history there and Pearlite Liners (P) Led., one of the oldest industries of Karnataka (earlier known
Shimoga_district
Town & Municipality in Querétaro, Mexico
and opal deposits. In other areas, there are deposits of rhyolite and pearlite. The highest elevations in the east and are formed by volcanic basalt.
Tequisquiapan
Physics studies of metallurgy
defects and crystallization. 1887 – Henry Clifton Sorby determines the pearlite structure. 1887 – Floris Osmond gives the name and symbols associated to
Physical_metallurgy
Indian academician (born 1945)
known as Tata Motors) when they introduced the micro-alloyed ferrite - pearlite steel (first generation), 49MnVS3, for the first time in India for the
K.A._Padmanabhan
Danish chemist (1846–1931)
From these observations he drew conclusions regarding the structure of pearlite and ferrite, and he was also able to watch the recrystallization of steel
Holger_F._Struer
Steel mill in Călărași, Romania
uncovered that had large deposits in sacks believed to be filled with pearlite. Surrounding water contained ammonia and benzene, which also damaged air
Călărași_steel_works
(1925). "On the inner crystalline structure of ferrite and cementite in pearlite". Proceedings of the Royal Society of London. Series A, Containing Papers
Nicholas_Timothy_Belaiew
Lake in Kars, Turkey
rocks while the southwestern elevations are formed by tuff, andesite, pearlite, pumice and obsidian of Dumanlıdağ pyroclastic rocks. Büyükalamet Heights
Lake_Kuyucuk
Software for scientific and industrial data visualization and analysis
4712519N. doi:10.1029/2011WR010776. S2CID 129426750. TOPOLOGY OF SPHEROIDIZED PEARLITE, by Yoshitaka Adachi (1) and Yuan Tsung Wang (1) – (1) National Institute
Avizo_(software)
Spinning one metal workpiece against another to join them
transformations structures of welded materials. In steel between austenite, ferrite, pearlite, bainite, cementite, martensite. Various parameters of welding are tested
Rotary_friction_welding
PEARLITE
PEARLITE
PEARLITE
PEARLITE
Boy/Male
Muslim
Guard some
Boy/Male
Arabic, Muslim
Servant of the Light
Surname or Lastname
English
English : unexplained; possibly a variant of Trundle.
Boy/Male
Afghan, Arabic, Celebrity, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim, Oriya, Pashtun, Sikh, Telugu, Traditional
Name of a Famous Saint
Boy/Male
Hindu
Lord of the dumb, Lord Shiva
Boy/Male
Indian
Heroic brother of the original one
Girl/Female
Indian
Angel, Houri, Nymph
Boy/Male
Indian
Who has the secret, Confidant
Boy/Male
Hindu, Indian, Marathi
Thought
Boy/Male
Tamil
Chitayu | சிதாயà¯à®‚
Descended from thought
PEARLITE
PEARLITE
PEARLITE
PEARLITE
PEARLITE
n.
Same as Pearlite.
n.
Alt. of Pearlstone
a.
Relating to or resembling perlite, or pearlstone; as, the perlitic structure of certain rocks. See Pearlite.