Jump to main content
Jump to site search

Issue 5, 2018
Previous Article Next Article

Stacking faults in Zr(Fe, Cr)2 Laves structured secondary phase particle in Zircaloy-4 alloy

Author affiliations

Abstract

Stacking faults (SFs) in secondary phase particles (SPPs), which generally crystallize in the Laves phase in Zircaloy-4 (Zr-4) alloy, have been frequently observed by researchers. However, few investigations on the nano-scale structure of SFs have been carried out. In the present study, an SF containing C14 structured SPP, which located at grain boundaries (GBs) in the α-Zr matrix, was chosen to be investigated, for its particular substructure as well as location, aiming to reveal the nature of the SFs in the SPPs in Zr-4 alloy. It was indicated that the SFs in the C14 structured SPP actually existed in the local C36 structured Laves phase, for their similarities in crystallography. The C14 → C36 phase transformation, which was driven by synchroshearing among the (0001) basal planes, was the formation mechanism of the SFs in the SPPs. By analyzing the strained regions near the SPP, a model for understanding the driving force of the synchroshear was proposed: the interaction between SPP and GB resulted in the Zener pinning effect, leading to the shearing parallel to the (0001) basal planes of the C14 structured SPP, and the synchroshear was therefore activated.

Graphical abstract: Stacking faults in Zr(Fe, Cr)2 Laves structured secondary phase particle in Zircaloy-4 alloy

Back to tab navigation

Publication details

The article was received on 01 Dec 2017, accepted on 28 Dec 2017 and first published on 28 Dec 2017


Article type: Communication
DOI: 10.1039/C7NR08963E
Citation: Nanoscale, 2018,10, 2249-2254
  •   Request permissions

    Stacking faults in Zr(Fe, Cr)2 Laves structured secondary phase particle in Zircaloy-4 alloy

    C. Liu, G. Li, F. Yuan, F. Han, Y. Zhang and H. Gu, Nanoscale, 2018, 10, 2249
    DOI: 10.1039/C7NR08963E

Search articles by author

Spotlight

Advertisements