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Oxidation induced localized creep deformation in Zircaloy-2

Pia Tejland (Institutionen för teknisk fysik, Materialens mikrostruktur ) ; Hans-Olof Andrén (Institutionen för teknisk fysik, Materialens mikrostruktur )
Journal of Nuclear Materials (0022-3115). Vol. 444 (2014), 1-3, p. 30-34.
[Artikel, refereegranskad vetenskaplig]

Extensive plastic deformation in the metal underneath the oxide scale in autoclave tested Zircaloy-2 was studied using transmission electron microscopy (TEM). It was concluded that the plastic deformation is created by creep during oxidation, and is not caused by surface treatment, sample preparation or cooling from autoclave temperatures. Evidence of large strains was found in the form of dislocation tangles, dis- location patches and sub-grain formation, and also indications of twinning were found. The heavily deformed layer is around a few lm thick and no obvious difference could be seen between alloys with different strength or different oxide thickness.



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Denna post skapades 2013-10-07. Senast ändrad 2015-03-30.
CPL Pubid: 184856

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Materialens mikrostruktur (2012-2015)

Ämnesområden

Energi
Materialvetenskap
Defekter och diffusion
Korrosionsteknik
Metallurgi och metalliska material

Chalmers infrastruktur

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Microstructure Investigation of the Oxidation Process in Zircaloy-2 - The Effect of Intermetallic Particle Size