Microstructural and mechanical characterization of alumina scales thermally developed on iron aluminide alloys

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Description

To understand the underlying phenomena when characterizing material performance, we must know the chemistry and physics of the early stages of oxidation, chemistry, and bonding at the substrate/oxide interface, effect of segregants on the strength of bonding, transport processes through the scale formed during corrosion, mechanisms of residual stress generation and relief, and fracture behavior at the oxide/substrate interface. Specific objectives of the program described here are to (a) systematically investigate the relationships among substrate composition and properties and scale/coating adherence, damage tolerance, and micromechanical properties; (b) use results from the investigation to prevent scale/coating failure at elevated temperatures; and ... continued below

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27 p.

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Natesan, K.; Renusch, D.; Veal, B. W. & Grimsditch, M. November 1996.

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Description

To understand the underlying phenomena when characterizing material performance, we must know the chemistry and physics of the early stages of oxidation, chemistry, and bonding at the substrate/oxide interface, effect of segregants on the strength of bonding, transport processes through the scale formed during corrosion, mechanisms of residual stress generation and relief, and fracture behavior at the oxide/substrate interface. Specific objectives of the program described here are to (a) systematically investigate the relationships among substrate composition and properties and scale/coating adherence, damage tolerance, and micromechanical properties; (b) use results from the investigation to prevent scale/coating failure at elevated temperatures; and (c) identify conditions that lead to coatings that are more damage tolerant and scales that are amenable to legitimate synthesis routes. This report presents experimental data on the microstructural characteristics of alumina scales that have been thermally developed on several Fe-based alumina-forming intermetallic alloys. In addition, data are presented on scale adhesion, along with determinations of strain from data obtained by ruby fluorescence.

Physical Description

27 p.

Notes

OSTI as DE97002515

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  • Other Information: PBD: Nov 1996

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  • Other: DE97002515
  • Report No.: ANL/FE--96/01
  • Report No.: ORNL/Sub--94-SS108V/02
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/437705 | External Link
  • Office of Scientific & Technical Information Report Number: 437705
  • Archival Resource Key: ark:/67531/metadc685108

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 10, 2015, 8:08 p.m.

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Natesan, K.; Renusch, D.; Veal, B. W. & Grimsditch, M. Microstructural and mechanical characterization of alumina scales thermally developed on iron aluminide alloys, report, November 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc685108/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.