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pearlite
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pearlite
pearlite (ˈpɜːlaɪt) [f. pearl n.1 + -ite1.] 1. Min. Variant form of perlite, = pearl-stone. 2. Metallurgy. One of the forms in which carbon and iron are combined in cast steel: see quots.1888 H. M. Howe in Engin. & Mining Jrnl. 18 Aug. 132 Minerals which compose iron. Name suggested here... Pearlyte...
Oxford English Dictionary
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Pearlite
Pearlite is a microstructure occurring in many common grades of steels. Pearlite can be hard and strong but is not particularly tough.
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Bainite
The temperature range for transformation of austenite to bainite (125–550 °C) is between those for pearlite and martensite. The hardness of bainite can be between that of pearlite and untempered martensite in the same steel hardness.
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cementite
cementite (sɪˈmɛntaɪt) [f. cement n. + -ite1.] A hard and brittle carbide of iron, Fe3C.1888 H. M. Howe in Engin. & Mining Jrnl. 18 Aug. 132 Minerals which compose iron. Name suggested here..Cementite. Iron with cement carbon. Ibid. 25 Aug. 154/1 Cementite..appears to be intensely hard, brilliant, h...
Oxford English Dictionary
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Ledeburite
The pearlite results from the eutectoidal decay of the austenite that comes from the ledeburite-I at 723 °C. During more rapid cooling, bainite can develop instead of pearlite, and with very rapid cooling martensite can develop.
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martensite
martensite Metallurgy. (ˈmɑːrtɛnzaɪt) [f. name of Prof. A. Martens, a German metallurgist + -ite.] See quot. 1902. (Cf. pearlite 2.)1898 Roberts-Austen Introd. Metallurgy (ed. 4) 147 Martensite is the very hard substance of which hardened steel consists. 1902 H. M. Howe in Encycl. Brit. XXIX. 572 Ma...
Oxford English Dictionary
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Martempering
In this process, austenite is transformed to martensite by step quenching, at a rate fast enough to avoid the formation of ferrite, pearlite, or bainite
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spheroidize
spheroidize, v. Metallurgy. (ˈsfɪərɔɪdaɪz) [f. spheroid n. + -ize.] a. intr. Of grains, esp. of graphite in cast iron or steel: to undergo conversion into spheroids.1912 in A. Sauveur Metallogr. Iron & Steel App. ii. 6 On long heating the pro-eutectoid and pearlitic cementite spheroidize slowly, and...
Oxford English Dictionary
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Hamon (swordsmithing)
clay coating on the back of the sword reduces the cooling speed of the red-hot metal when it is plunged into the water and allows the steel to turn into pearlite and upon polishing will leave a very visible transition between the harder and softer metals (usually martensite and tempered martensite rather than pearlite
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granular
granular, a. (ˈgrænjʊlə(r)) [f. late L. grānulum, dim. of grānum grain n.1 + -ar.] 1. a. Consisting of grains or granules; existing in the condition of grains or granules.1794 Sullivan View Nat. I. 493 Mountains, which consist of lime stone or marble of a granular or scaly texture. 1826 Henry Elem. ...
Oxford English Dictionary
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Pearl light
ship in service 1964–66
Pearl Light, a beer brewed by the Pearl Brewing Company of San Antonio, Texas, US
See also
Perlite, an amorphous volcanic glass
Pearlite
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High-strength low-alloy steel
cementite in pearlite. Pearlite-reduced steels: Low carbon content steels which lead to little or no pearlite, but rather a very fine grain ferrite matrix.
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Microalloyed steel
Machinability is better than Q&T steels because of their more uniform hardness and their ferrite-pearlite microstructure.
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Carbon steel
pearlite. If it is hypereutectoid steel (more than 0.77 wt% C) then the structure is full pearlite with small grains (larger than the pearlite lamella) of cementite
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Lamellar structure
where a phase transition front moves quickly, leaving behind two solid products, as in rapid cooling of eutectic (such as solder) or eutectoid (such as pearlite
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