Properties of Invar alloy Fe-30.9 % Ni-1.23 % C after dispersion of structure by upsetting

Properties of Invar alloy Fe-30.9 % Ni-1.23 % C after dispersion of structure by upsetting

The effect of cold plastic deformation by upsetting of the carbon‐containing Invar Fe‐30.9 % Ni‐1.23 % C alloy on structure, magnetic and elastic properties was studied by means of X‐ray diffraction and Mössbauer analysis, magnetic and ultrasonic methods. The crystal lattice distortion and additiona...

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Veröffentlicht in:Materialwissenschaft und Werkstofftechnik 2016-03, Vol.47 (2-3), p.149-155
Hauptverfasser: Nadutov, V. M., Vashchuk, D. L., Davidenko, O. A., Zaporozhets, O. I., Svystunov, Y. O.
Format: Artikel
Sprache:eng
Schlagworte:
Cold upsetting
Debye temperature
elastic moduli
Elastizitätsmoduln
Ferrous alloys
Invar
Low expansion alloys
Magnetic properties
magnetische Eigenschaften
Magnetization
Mössbauer-spectroscopy
Mössbauer-Spektroskopie
Nickel base alloys
Stauchen
Upsetting
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Zusammenfassung:The effect of cold plastic deformation by upsetting of the carbon‐containing Invar Fe‐30.9 % Ni‐1.23 % C alloy on structure, magnetic and elastic properties was studied by means of X‐ray diffraction and Mössbauer analysis, magnetic and ultrasonic methods. The crystal lattice distortion and additional dissolution of graphite in austenite increase magnetization, hyperfine magnetic fields at iron nuclei, the Curie temperature essentially smearing this phase transition. These changes are caused by weakened interatomic bond in the Invar alloy detected in decreased elastic moduli and the Debye temperature.
ISSN:0933-5137
1521-4052
DOI:10.1002/mawe.201600488