Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 515, Issue -, Pages 135-139Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2018.12.033
Keywords
Atom probe tomography; Grain boundaries segregation; Zirconium alloys; High-Si particles
Funding
- National Natural Science Foundation of China [51501021, 51531005, 51421001]
- Fundamental Research Funds for the Central Universities [106112017CDJQJ138803, 2018CDPTCG0001/14]
- 111 Project by the Ministry of Education [B16007]
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Atom probe tomography was used to study the distribution of alloying elements near grain boundaries (GBs) in Zr-1.0Sn-0.3Nb-0.3Fe-(0.1Cu) alloys at the early stage of aging after beta quenching. Cu was observed to segregate at GBs for the first time. Zr3Fe, Zr-3(Fe,Cu) and Zr(Nb,Fe,Cr)(2) are precipitated on or near GBs. In addition, the impurity Si is mainly precipitates in the form of second-phase particles (SPPs), forming Zr-3(Fe,Si) and Zr-3(Fe,Cu,Si). (C) 2018 Elsevier B.V. All rights reserved.
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