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- Beta_ferrite abstract "Beta ferrite (β-Fe) and beta iron (β-iron) are obsolete terms for the paramagnetic form of alpha ferrite (α-Fe). The primary phase of low-carbon or mild steel and most cast irons at room temperature is ferromagnetic ferrite (α-Fe). As iron or ferritic steel is heated above the critical temperature A2 or Curie temperature of 771 °C (1044K or 1420 °F), the random thermal agitation of the atoms exceeds the oriented magnetic moment of the unpaired electron spins in the 3d shell. The A2 forms the low-temperature boundary of the beta iron field in the phase diagram in Figure 1. Beta ferrite is crystallographically identical to alpha ferrite, except for magnetic domains and the expanded body-centered cubic lattice parameter as a function of temperature, and is therefore of only minor importance in steel heat treating. For this reason, the beta "phase" is not usually considered a distinct phase but merely the high-temperature end of the alpha phase field. Similarly, the A2 is of only minor importance compared to the A1 (eutectoid), A3 and Acm critical temperatures. The Acm, where austenite is in equilibrium with cementite + γ-Fe, is beyond the right edge in Fig. 1. The α + γ phase field is, technically, the β + γ field above the A2. The beta designation maintains continuity of the Greek-letter progression of phases in iron and steel: alpha ferrite (α-Fe), beta ferrite (β-Fe), austenite (γ-Fe), high-temperature delta ferrite (δ-Fe) and high-pressure hexaferrum (ε-Fe).".
- Beta_ferrite wikiPageID "31584990".
- Beta_ferrite wikiPageLength "5020".
- Beta_ferrite wikiPageOutDegree "42".
- Beta_ferrite wikiPageRevisionID "578196282".
- Beta_ferrite wikiPageWikiLink Austenite.
- Beta_ferrite wikiPageWikiLink Body-centered_cubic.
- Beta_ferrite wikiPageWikiLink Carbon_steel.
- Beta_ferrite wikiPageWikiLink Cast_iron.
- Beta_ferrite wikiPageWikiLink Category:Iron.
- Beta_ferrite wikiPageWikiLink Category:Metallurgy.
- Beta_ferrite wikiPageWikiLink Category:Steel.
- Beta_ferrite wikiPageWikiLink Cementite.
- Beta_ferrite wikiPageWikiLink Close-packing_of_equal_spheres.
- Beta_ferrite wikiPageWikiLink Crystallography.
- Beta_ferrite wikiPageWikiLink Cubic_crystal_system.
- Beta_ferrite wikiPageWikiLink Curie_temperature.
- Beta_ferrite wikiPageWikiLink Delta_ferrite.
- Beta_ferrite wikiPageWikiLink Earth.
- Beta_ferrite wikiPageWikiLink Electrical_impedance.
- Beta_ferrite wikiPageWikiLink Electron.
- Beta_ferrite wikiPageWikiLink Eutectic_system.
- Beta_ferrite wikiPageWikiLink Eutectoid.
- Beta_ferrite wikiPageWikiLink Ferrite_(iron).
- Beta_ferrite wikiPageWikiLink Ferromagnetic.
- Beta_ferrite wikiPageWikiLink Ferromagnetism.
- Beta_ferrite wikiPageWikiLink Heat_treating.
- Beta_ferrite wikiPageWikiLink Hexaferrum.
- Beta_ferrite wikiPageWikiLink Hexagonal_close-packed.
- Beta_ferrite wikiPageWikiLink Hysteresis.
- Beta_ferrite wikiPageWikiLink Induction_heating.
- Beta_ferrite wikiPageWikiLink Inner_core.
- Beta_ferrite wikiPageWikiLink Iron.
- Beta_ferrite wikiPageWikiLink Laser.
- Beta_ferrite wikiPageWikiLink Magnetic_domain.
- Beta_ferrite wikiPageWikiLink Metastability.
- Beta_ferrite wikiPageWikiLink Metastable.
- Beta_ferrite wikiPageWikiLink Mild_steel.
- Beta_ferrite wikiPageWikiLink Obsolescence.
- Beta_ferrite wikiPageWikiLink Orthorhombic.
- Beta_ferrite wikiPageWikiLink Orthorhombic_crystal_system.
- Beta_ferrite wikiPageWikiLink Paramagnetic.
- Beta_ferrite wikiPageWikiLink Paramagnetism.
- Beta_ferrite wikiPageWikiLink Phase_(matter).
- Beta_ferrite wikiPageWikiLink Phase_diagram.
- Beta_ferrite wikiPageWikiLink Quenching.
- Beta_ferrite wikiPageWikiLink Steel.
- Beta_ferrite wikiPageWikiLink Superlattice.
- Beta_ferrite wikiPageWikiLink Tempering_(metallurgy).
- Beta_ferrite wikiPageWikiLink Uppsala_University.
- Beta_ferrite wikiPageWikiLink X-ray_crystallography.
- Beta_ferrite wikiPageWikiLink X-ray_diffraction.
- Beta_ferrite wikiPageWikiLink File:Beta_iron_carbon_pd.TIF.
- Beta_ferrite wikiPageWikiLinkText "Beta ferrite".
- Beta_ferrite wikiPageWikiLinkText "beta ferrite".
- Beta_ferrite wikiPageWikiLinkText "beta".
- Beta_ferrite wikiPageWikiLinkText "β-phase".
- Beta_ferrite hasPhotoCollection Beta_ferrite.
- Beta_ferrite wikiPageUsesTemplate Template:Main.
- Beta_ferrite wikiPageUsesTemplate Template:Reflist.
- Beta_ferrite wikiPageUsesTemplate Template:Steels.
- Beta_ferrite subject Category:Iron.
- Beta_ferrite subject Category:Metallurgy.
- Beta_ferrite subject Category:Steel.
- Beta_ferrite hypernym Terms.
- Beta_ferrite type PopulatedPlace.
- Beta_ferrite type Element.
- Beta_ferrite comment "Beta ferrite (β-Fe) and beta iron (β-iron) are obsolete terms for the paramagnetic form of alpha ferrite (α-Fe). The primary phase of low-carbon or mild steel and most cast irons at room temperature is ferromagnetic ferrite (α-Fe). As iron or ferritic steel is heated above the critical temperature A2 or Curie temperature of 771 °C (1044K or 1420 °F), the random thermal agitation of the atoms exceeds the oriented magnetic moment of the unpaired electron spins in the 3d shell.".
- Beta_ferrite label "Beta ferrite".
- Beta_ferrite sameAs حديد_بيتا.
- Beta_ferrite sameAs Ferit_β.
- Beta_ferrite sameAs Β鉄.
- Beta_ferrite sameAs m.0glpm2w.
- Beta_ferrite sameAs Q3486626.
- Beta_ferrite sameAs Q3486626.
- Beta_ferrite sameAs Β铁.
- Beta_ferrite wasDerivedFrom Beta_ferrite?oldid=578196282.
- Beta_ferrite isPrimaryTopicOf Beta_ferrite.