Microstructural characterization of primary coolant pipe steel

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Atom probe field-ion microscopy, analytical electron microscopy, and optical microscopy have been used to investigate the changes that occur in the microstructure of cast CF 8 primary coolant pipe stainless steel after long term thermal aging. The cast duplex microstructure consisted of austenite with 15% delta-ferrite. Investigation of the aged material revealed that the ferrite spinodally decomposed into a fine scaled network of ..cap alpha.. and ..cap alpha..'. A fine G-phase precipitate was also observed in the ferrite. The observed degradation in mechanical properties is probably a consequence of the spinodal decomposition in the ferrite.

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Pages: 6

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Miller, M.K. & Bentley, J. January 1, 1986.

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Description

Atom probe field-ion microscopy, analytical electron microscopy, and optical microscopy have been used to investigate the changes that occur in the microstructure of cast CF 8 primary coolant pipe stainless steel after long term thermal aging. The cast duplex microstructure consisted of austenite with 15% delta-ferrite. Investigation of the aged material revealed that the ferrite spinodally decomposed into a fine scaled network of ..cap alpha.. and ..cap alpha..'. A fine G-phase precipitate was also observed in the ferrite. The observed degradation in mechanical properties is probably a consequence of the spinodal decomposition in the ferrite.

Physical Description

Pages: 6

Notes

NTIS, PC A02/MF A01; 1.

Source

  • 33. international field emission symposium (IFES), Berlin, F.R. Germany, 6 Jul 1986

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  • Other: DE86012631
  • Report No.: CONF-860752-1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5503689
  • Archival Resource Key: ark:/67531/metadc1090274

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • January 1, 1986

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 23, 2018, 2:05 p.m.

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Miller, M.K. & Bentley, J. Microstructural characterization of primary coolant pipe steel, article, January 1, 1986; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1090274/: accessed November 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.