austenite


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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 ?
Fine grains of ferrite yield high strength, and the distribution of austenite and ferrite together make ADI more ductile and tougher than conventional irons.
Three main zones were expected at HAZ: sub-critical, heated to less than 723[degrees]C, free of austenite, with some stress relief; intercritical, partial austenite formation on heating which reverts to ferrite pearlite on cooling, and super-critical, complete transformation to austenite, grain refinement or the possibility of growth depending on maximum temperature.
In this case, steel is carefully prepared so it possesses the right concentration of Austenite at room temperature.
The necessary assembly welds are produced in orbital welding process, with and without filler, with sizes from DN32 to DN300 and wall thicknesses of 2 to 3 mm, Material is an austenite.
Its fine-scale microstructure of ferrite and carbon stabilized austenite gives the new compound nearly three times the fracture toughness of advanced steels currently on the market.
The DSS microstructure consists of approximately 50% austenite and 50% ferrite phases.
The topics include evaluating internal stresses using rotating-slit and two-dimensional detectors, in situ neutron diffraction measurements of the deformation behavior in high manganese steels, the effect of intergranular interaction and lattice rotation on predicted residual stress and textures in austenite and ferrite, evaluating residual stresses at the interface with implant by synchrotron radiation, the effect of process atmosphere on the microstructure and residual stresses after the laser surface hardening of steel, residual stress in coating produced by cold spray, and investigating residual stress/strain and texture in a large dissimilar metal weld using synchrotron radiation and neutrons.
The UNS S17400 stainless steel fabricated by selective laser melting contains different phases-significant quantities of retained austenite as opposed to all martensite.
At temperatures between about 0 and 100[degrees]C, there are two important phases or crystal structures of NiTi that can be referred to as the high temperature and low temperature phase, or as austenite and martensite, respectively.
Indeed, examples of formal kinetics modeling can be found associated with a variety of transformations, such as, austenite to perlite transformation (Johnson and Mehl, 1939), recrystallization (Vandermeer and Juul Jensen, 2001), abnormal grain growth in BaTi[O.
Firstly, the austenite grain growth, obtained due to high temperature and long soaking time, has to be avoided as there is a risk for material brittleness.
Above a certain temperature, the alloy remains in a phase called austenite - a regularly aligned structure that springs back to its original shape, even after significant bending, much like flexible eyeglass frames.