Atom probe tomography of nanoscale particles in ODS ferritic alloys

An atom probe tomography characterization of the microstructure of as-processed and crept mechanically-alloyed, oxide-dispersion-strengthened (MA/ODS) ferritic alloys has been performed. The significant enrichments of Cr, W, Ti, Y, O, C and B in the vicinity of dislocations and the presence of ultra...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2003-07, Vol.353 (1), p.140-145
Hauptverfasser:	Miller, M.K., Kenik, E.A., Russell, K.F., Heatherly, L., Hoelzer, D.T., Maziasz, P.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Atom probe Dislocations Dispersion hardening metals Exact sciences and technology IRON ALLOYS MATERIALS SCIENCE Mechanical alloying Metals. Metallurgy Microstructural characterization NANOSTRUCTURES OXIDES Powder metallurgy. Composite materials Precipitation PROBES Production techniques Segregation TOMOGRAPHY
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Beschreibung
Zusammenfassung:	An atom probe tomography characterization of the microstructure of as-processed and crept mechanically-alloyed, oxide-dispersion-strengthened (MA/ODS) ferritic alloys has been performed. The significant enrichments of Cr, W, Ti, Y, O, C and B in the vicinity of dislocations and the presence of ultrastable 4-nm-diameter Ti-, Y- and O-enriched particles appears to be responsible for their improved high temperature mechanical properties.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/S0921-5093(02)00680-9