Journal of Materials Science, volume 56, issue 19, pages 11557-11568

Study of the microstructure and thermomechanical properties of Mo/graphite joint brazed with Ti–Zr–Nb–Be powder filler metal

Fedotov Victor V ¹

Suchkov Alexey ¹

Sliva Andrey ²

Dzhumaev Pavel ¹

Kozlov Ilya ^{1, 3}

Svetogorov Roman ³

Bachurina Diana ¹

Sevryukov Oleg ¹

Hide authors affiliations Show authors affiliations: 3 affiliations

National Research Nuclear University MEPHI (Moscow Engineering Physics Institute), Moscow, Russia |

National Research University “Moscow Power Engineering Institute”, Moscow, Russia |

National research center “Kurchatov Institute”, Moscow, Russia |

Publication type: Journal Article

Publication date: 2021-03-29

Springer Nature

Journal: Journal of Materials Science

Quartile SCImago

Quartile WOS

Impact factor: 4.5

ISSN: 00222461, 15734803

DOI: 10.1007/s10853-021-06015-9

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General Materials Science

Mechanical Engineering

Mechanics of Materials

Abstract

The aim of this work was to braze molybdenum and graphite with Ti–40Zr–8.5Nb–1.5Be filler metal in order to demonstrate the possibility of its application for X-ray tube target brazing, further to investigate the joint microstructure using energy-dispersive X-ray spectroscopy (EDS), electron backscattered diffraction (EBSD), X-ray diffraction (XRD), and electron microscopy as well as to conduct shear and unbrazing tests. It is shown that the brazed joint consists of matrix from β-(Ti, Mo) solid solution, mixed ZrC and TiC carbide layers at the braze/graphite interface, and beryllides TiBe2 and MoBe2 located at the grain boundaries of β-(Ti, Mo). The presented data made it possible to propose a brazed joint formation mechanism and explain the concentration of beryllides at the grain boundaries during brazing, as well as the mixed carbide layer formation from the side of the graphite. The mechanical tests showed that Mo/graphite brazed joints have a shear strength of at least 28.0 ± 0.9 MPa. However, sample failure occurred through the graphite due to the graphite surface mechanical treatment and the presence of a ductile β-Ti phase in the joint. The evaluation of joint thermal properties was performed using unbrazing tests. The unbrazing temperature was 1882 °C, which was caused by formation of refractory phases during brazing. The microstructure study shows that unbrazing occurs through the β-(Ti, Mo) phase with grain boundaries and beryllides eutectic melting.

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Citations by journals

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Journal of Materials Engineering and Performance	Journal of Materials Engineering and Performance, 2, 28.57% Journal of Materials Engineering and Performance 2 publications, 28.57%
Journal of Manufacturing Processes	Journal of Manufacturing Processes, 1, 14.29% Journal of Manufacturing Processes 1 publication, 14.29%
Metals	Metals, 1, 14.29% Metals 1 publication, 14.29%
Journal of Nuclear Materials	Journal of Nuclear Materials, 1, 14.29% Journal of Nuclear Materials 1 publication, 14.29%
International Journal of Refractory Metals and Hard Materials $International Journal of Refractory Metals and Hard Materials$	$International Journal of Refractory Metals and Hard Materials$ International Journal of Refractory Metals and Hard Materials, 1, 14.29% International Journal of Refractory Metals and Hard Materials 1 publication, 14.29%
Science and Technology of Welding and Joining	Science and Technology of Welding and Joining, 1, 14.29% Science and Technology of Welding and Joining 1 publication, 14.29%
	1 2

Citations by publishers

	1 2 3
Elsevier	Elsevier, 3, 42.86% Elsevier 3 publications, 42.86%
Springer Nature	Springer Nature, 2, 28.57% Springer Nature 2 publications, 28.57%
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 1, 14.29% Multidisciplinary Digital Publishing Institute (MDPI) 1 publication, 14.29%
Taylor & Francis	Taylor & Francis, 1, 14.29% Taylor & Francis 1 publication, 14.29%
	1 2 3

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Fedotov V. V. et al. Study of the microstructure and thermomechanical properties of Mo/graphite joint brazed with Ti–Zr–Nb–Be powder filler metal // Journal of Materials Science. 2021. Vol. 56. No. 19. pp. 11557-11568.

GOST all authors (up to 50) Copy

Fedotov V. V., Suchkov A., Sliva A., Dzhumaev P., Kozlov I., Svetogorov R., Bachurina D., Sevryukov O. Study of the microstructure and thermomechanical properties of Mo/graphite joint brazed with Ti–Zr–Nb–Be powder filler metal // Journal of Materials Science. 2021. Vol. 56. No. 19. pp. 11557-11568.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1007/s10853-021-06015-9

UR - https://doi.org/10.1007%2Fs10853-021-06015-9

TI - Study of the microstructure and thermomechanical properties of Mo/graphite joint brazed with Ti–Zr–Nb–Be powder filler metal

T2 - Journal of Materials Science

AU - Fedotov, Victor V

AU - Sliva, Andrey

AU - Dzhumaev, Pavel

AU - Kozlov, Ilya

AU - Bachurina, Diana

AU - Sevryukov, Oleg

AU - Suchkov, Alexey

AU - Svetogorov, Roman

PY - 2021

DA - 2021/03/29 00:00:00

PB - Springer Nature

SP - 11557-11568

IS - 19

VL - 56

SN - 0022-2461

SN - 1573-4803

ER -

BibTex |

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BibTex Copy

@article{2021_Fedotov,

author = {Victor V Fedotov and Andrey Sliva and Pavel Dzhumaev and Ilya Kozlov and Diana Bachurina and Oleg Sevryukov and Alexey Suchkov and Roman Svetogorov},

title = {Study of the microstructure and thermomechanical properties of Mo/graphite joint brazed with Ti–Zr–Nb–Be powder filler metal},

journal = {Journal of Materials Science},

year = {2021},

volume = {56},

publisher = {Springer Nature},

month = {mar},

url = {https://doi.org/10.1007%2Fs10853-021-06015-9},

number = {19},

pages = {11557--11568},

doi = {10.1007/s10853-021-06015-9}

}

MLA

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MLA Copy

Fedotov, Victor V., et al. “Study of the microstructure and thermomechanical properties of Mo/graphite joint brazed with Ti–Zr–Nb–Be powder filler metal.” Journal of Materials Science, vol. 56, no. 19, Mar. 2021, pp. 11557-11568. https://doi.org/10.1007%2Fs10853-021-06015-9.

Found error?

Publisher

Springer Nature

Journal

Journal of Materials Science

Quartile SCImago

Quartile WOS

Impact factor

4.5

ISSN

00222461 (Print)
15734803 (Electronic)

Labs

Laboratory of Quick-hardened materials

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