Texture evolution of zircaloy-2 during beta-quenching: effect of process variables

Javier Romero, Michael Preuss, João Quinta Da Fonseca, Robert J. Comstock, Mats Dahlbäck, Lars Hallstadius

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther


The nuclear industry is interested in developing thermomechanical processes to produce random crystallographic orientation (texture) from cold-rolled Zircaloy-2 sheets used to manufacture boiling water reactor (BWR) channels. Randomized textures are beneficial because they minimize anisotropic irradiation-assisted growth, which in turn reduces bowing and uncontrolled deformation of BWR channels during service. The texture evolution of cold-rolled Zircaloy-2 sheets during the allotropic α→β→α phase transformation was characterized by using synchrotron X-ray diffraction in situ and electron backscatter diffraction. The initial strong rolling texture is weakened only if the α→β→α phase transformation is complete. Plastic deformation and grain growth in the β-phase lead to changes in the β texture and modify the inherited α texture. The global texture evolution is not sensitive to levels of stress that do not cause β plastic deformation. These findings demonstrate that accurate temperature control of the β-quenching process is of utmost importance in order to minimize undesirable irradiation growth of BWR channels during service, and that plastic deformation in the β phase can be employed to modify the inherited α texture. BWR channels with β-quenched textures will exhibit minimum irradiation growth caused by texture.

Original languageEnglish
Title of host publicationZirconium in the Nuclear Industry
Subtitle of host publication16th International Symposium
PublisherASTM International
Number of pages18
ISBN (Print)9780803175150
Publication statusPublished - 2011
Externally publishedYes
EventInternational Symposium on Zirconium in the Nuclear Industry 2010 - Chengdu, Sinchuan Province, China
Duration: 9 May 201013 May 2010
Conference number: 16th

Publication series

NameASTM Special Technical Publication
Volume1529 STP
ISSN (Print)0066-0558


ConferenceInternational Symposium on Zirconium in the Nuclear Industry 2010
CityChengdu, Sinchuan Province


  • Beta-quenching
  • Synchrotron X-ray diffraction
  • Texture
  • Variant selection
  • Zircaloy-2

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