austenite


Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to austenite: pearlite, cementite

aus·ten·ite

 (ô′stə-nīt′)
n.
A nonmagnetic solid solution of iron and another alloying element, usually assumed to be carbon unless otherwise specified, used in making corrosion-resistant steel.

[After Sir William Chandler Roberts- Austen (1843-1902), British metallurgist.]

aus′ten·it′ic (-ĭt′ĭk) adj.

austenite

(ˈɔːstəˌnaɪt)
n
1. (Metallurgy) a solid solution of carbon in face-centred-cubic gamma iron, usually existing above 723°C
2. (Metallurgy) the gamma phase of iron, stabilized at low temperatures by the addition of such elements as nickel
[C20: named after Sir William C. Roberts-Austen (1843–1902), English metallurgist]
austenitic adj

aus•ten•ite

(ˈɔ stəˌnaɪt)

n.
a nonmagnetic solid solution of carbon or iron carbide in iron, an essential component of high-carbon stainless steels.
[1900–05; after Sir W. C. Roberts-Austen (1843–1902), English metallurgist; see -ite1]
aus`ten•it′ic (-ˈnɪt ɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.austenite - a solid solution of ferric carbide or carbon in iron; cools to form pearlite or martensite
gamma iron - a nonmagnetic allotrope of iron that is the basis of austenite; stable between 906 and 1403 degrees centigrade
austenitic steel - steel that has enough nickel and chromium or manganese to retain austenite at atmospheric temperatures
primary solid solution, solid solution - a homogeneous solid that can exist over a range of component chemicals; a constituent of alloys that is formed when atoms of an element are incorporated into the crystals of a metal
Translations
References in periodicals archive ?
Suitable parameters of the schedule led to ferrite-bainite microstructure with 15% retained austenite, ferrite grain size of about 2 um and elongation of about 30%.
The following phase transformation temperatures were obtained by the differential scanning calorimeter test: martensite starts at -46[degrees]C and finishes at -55[degrees]C; austenite starts at -25[degrees]C and finishes at -18[degrees]C.
The Danieli installations for vacuum-oxygen decarburization are designed for wide range of steel grades (carbon, stainless, austenite, ferrite corrosion-resistant, silicomanganese, chromium, chromium-silicon, chromium-vanadium, chromium-molybdenum, siliceous, free-cutting, chromium-nickel, bearing steels and steels with low content of carbon).
Two examples of material microstructures are Austenite and Martensite.
The case depth consists of fine grain martensitic microstructure with a negligible amount of retained austenite and without any traces of free ferrites.
After the cryo-process, the product is placed in an oven to temper the converted martensite from austenite and precipitate the carbides.
Martensite forms on cooling from austenite by a shear process.
It can have a intense effect on the mechanical properties of definite steels, provided their composition and prior heat treatment are such that they retain some austenite at space temperature.
It was found that hardness of steel 18Ni-Co-Mo-Ti aged in temperatures higher than 510[degrees]C was lower due to the presence of high amount of austenite.
There are four characteristics temperatures which defining a thermoelastic marten-sitic conversion: the marten-sitic initial temperature, Ms, at which marten-sitic first appears in the austenite, the Mf temperature at which the marten-sitic formation ends, the As temperature at which the austenite starts forming and the Af at which the austenite formation ends.
Nickel is an austenite stabilizer, and the austenitic stainless steels (300-series) are not magnetic.