Accurate quantitative EDS-TEM analysis of precipitates and matrix in equilibrium (α+β) Zr–1Nb alloys with Ta addition

Pedro A. Ferreirós; P. R. Alonso; D. P. Quirós; E. Zelaya; G. H. Rubiolo

doi:10.1016/j.jallcom.2020.156372

Accurate quantitative EDS-TEM analysis of precipitates and matrix in equilibrium (α+β) Zr–1Nb alloys with Ta addition

Pedro A. Ferreirós^*, P. R. Alonso, D. P. Quirós, E. Zelaya, G. H. Rubiolo

^*Corresponding author for this work

Not published at VTT

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

The (α+β) phase microstructure in Zr-1.05Nb, Zr-0.85Nb-0.20Ta and Zr-0.85Nb-0.40Ta (wt.%) alloys annealed at 570 °C for 3840 h after β-quenching were observed at different scales by optical, SEM and TEM microscopies. A quantitative study of phase chemical compositions was carried out by EDS-TEM with experimental Cliff-Lorimer factors. The α matrix was measured on thin films and the β particle on carbon extractive replicas. The Ta addition showed a continuous increase of (Nb + Ta) solubility in α-Zr and (Zr + Ta) solubility in the β-Nb phase. The increase of Ta in the nominal composition of the Zr-1(Nb, Ta) alloy causes the decrease of the mass fraction of β-Nb phase.

Original language	English
Article number	156372
Journal	Journal of Alloys and Compounds
Volume	847
DOIs	https://doi.org/10.1016/j.jallcom.2020.156372
Publication status	Published - 20 Dec 2020
MoE publication type	A1 Journal article-refereed

Funding

This study was supported by FonCyT, through PICT-2015-2267 project.

Keywords

Cliff-lorimer factor
Energy dispersive X-ray spectroscopy (EDS)
Ta addition
Transmission electron microscopy (TEM)
Zr-Nb alloys

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10.1016/j.jallcom.2020.156372

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title = "Accurate quantitative EDS-TEM analysis of precipitates and matrix in equilibrium (α+β) Zr–1Nb alloys with Ta addition",

abstract = "The (α+β) phase microstructure in Zr-1.05Nb, Zr-0.85Nb-0.20Ta and Zr-0.85Nb-0.40Ta (wt.%) alloys annealed at 570 °C for 3840 h after β-quenching were observed at different scales by optical, SEM and TEM microscopies. A quantitative study of phase chemical compositions was carried out by EDS-TEM with experimental Cliff-Lorimer factors. The α matrix was measured on thin films and the β particle on carbon extractive replicas. The Ta addition showed a continuous increase of (Nb + Ta) solubility in α-Zr and (Zr + Ta) solubility in the β-Nb phase. The increase of Ta in the nominal composition of the Zr-1(Nb, Ta) alloy causes the decrease of the mass fraction of β-Nb phase.",

keywords = "Cliff-lorimer factor, Energy dispersive X-ray spectroscopy (EDS), Ta addition, Transmission electron microscopy (TEM), Zr-Nb alloys",

author = "Ferreir{\'o}s, {Pedro A.} and Alonso, {P. R.} and Quir{\'o}s, {D. P.} and E. Zelaya and Rubiolo, {G. H.}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = dec,

day = "20",

doi = "10.1016/j.jallcom.2020.156372",

language = "English",

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T1 - Accurate quantitative EDS-TEM analysis of precipitates and matrix in equilibrium (α+β) Zr–1Nb alloys with Ta addition

AU - Ferreirós, Pedro A.

AU - Alonso, P. R.

AU - Quirós, D. P.

AU - Zelaya, E.

AU - Rubiolo, G. H.

PY - 2020/12/20

Y1 - 2020/12/20

N2 - The (α+β) phase microstructure in Zr-1.05Nb, Zr-0.85Nb-0.20Ta and Zr-0.85Nb-0.40Ta (wt.%) alloys annealed at 570 °C for 3840 h after β-quenching were observed at different scales by optical, SEM and TEM microscopies. A quantitative study of phase chemical compositions was carried out by EDS-TEM with experimental Cliff-Lorimer factors. The α matrix was measured on thin films and the β particle on carbon extractive replicas. The Ta addition showed a continuous increase of (Nb + Ta) solubility in α-Zr and (Zr + Ta) solubility in the β-Nb phase. The increase of Ta in the nominal composition of the Zr-1(Nb, Ta) alloy causes the decrease of the mass fraction of β-Nb phase.

AB - The (α+β) phase microstructure in Zr-1.05Nb, Zr-0.85Nb-0.20Ta and Zr-0.85Nb-0.40Ta (wt.%) alloys annealed at 570 °C for 3840 h after β-quenching were observed at different scales by optical, SEM and TEM microscopies. A quantitative study of phase chemical compositions was carried out by EDS-TEM with experimental Cliff-Lorimer factors. The α matrix was measured on thin films and the β particle on carbon extractive replicas. The Ta addition showed a continuous increase of (Nb + Ta) solubility in α-Zr and (Zr + Ta) solubility in the β-Nb phase. The increase of Ta in the nominal composition of the Zr-1(Nb, Ta) alloy causes the decrease of the mass fraction of β-Nb phase.

KW - Cliff-lorimer factor

KW - Energy dispersive X-ray spectroscopy (EDS)

KW - Ta addition

KW - Transmission electron microscopy (TEM)

KW - Zr-Nb alloys

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DO - 10.1016/j.jallcom.2020.156372

M3 - Article

AN - SCOPUS:85089073606

SN - 0925-8388

VL - 847

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 156372

ER -

Accurate quantitative EDS-TEM analysis of precipitates and matrix in equilibrium (α+β) Zr–1Nb alloys with Ta addition

Abstract

Funding

Keywords

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