1. Stability of ferritic MA/ODS alloys at high temperatures
- Author
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Miller, M.K., Hoelzer, D.T., Kenik, E.A., and Russell, K.F.
- Subjects
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ALLOYS , *METALLIC composites , *MICROSTRUCTURE , *HEAT treatment of metals , *CRYSTAL grain boundaries - Abstract
Abstract: The ultrafine scale microstructure of three MA/ODS ferritic alloys (12YWT, 14YWT and MA957) have been characterized by atom probe tomography in the as-received condition and after isothermal heat treatments at temperatures of up to 24h at 1300°C (∼85% T m). Atom probe tomography revealed the presence of a high number density of 2–4nm diameter titanium-, yttrium- and oxygen-enriched particles. These ultrafine particles were found to be extremely resistant to coarsening during isothermal aging at 1300°C. Solute segregation of the alloying elements to dislocations and grain boundaries was also observed. [Copyright &y& Elsevier]
- Published
- 2005
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