Laser brazing of Inconel® 718 using Ag and Cu-Ag nanopastes as brazing materials

Denzel Bridges; Chaoli Ma; Zane Palmer; Shutong Wang; Zhili Feng; Anming Hu

doi:10.1016/j.jmatprotec.2017.06.010

Laser brazing of Inconel^® 718 using Ag and Cu-Ag nanopastes as brazing materials

Denzel Bridges, Chaoli Ma, Zane Palmer, Shutong Wang, Zhili Feng, Anming Hu

Materials Joining

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

35 Scopus citations

Abstract

Ag nanopastes composed of Ag nanoparticles or Ag nanowires and Cu-Ag nanopastes with Cu-Ag core-shell nanowires are used as a new brazing material for Inconel^® 718. Ag nanoparticles or Ag nanowires are further added to the core-shell paste to adjust to a eutectic composition. Microstructural analysis of the brazed joints was carried out with EDS and XRD. High bonding strength (>100 MPa) was obtained with both Ag and Cu-Ag nanopastes. It was concluded that the Cu-Ag nanopastes form stronger braze joints than the BAg-8 brazing alloy as a result of Hall-Petch strengthening. It has also been concluded that the addition Ag nanoparticles or Ag nanowires to the Cu-Ag core-shell nanowire paste have a significant impact on the bonding strength and fracture of the Cu-Ag joints.

Original language	English
Pages (from-to)	313-324
Number of pages	12
Journal	Journal of Materials Processing Technology
Volume	249
DOIs	https://doi.org/10.1016/j.jmatprotec.2017.06.010
State	Published - Nov 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Brazing
Core-shell
Inconel
Laser
Nanojoining
Nanopaste

Access to Document

10.1016/j.jmatprotec.2017.06.010

Cite this

@article{393e43b92e4b4091ab59a0a56b3891c3,

title = "Laser brazing of Inconel{\textregistered} 718 using Ag and Cu-Ag nanopastes as brazing materials",

abstract = "Ag nanopastes composed of Ag nanoparticles or Ag nanowires and Cu-Ag nanopastes with Cu-Ag core-shell nanowires are used as a new brazing material for Inconel{\textregistered} 718. Ag nanoparticles or Ag nanowires are further added to the core-shell paste to adjust to a eutectic composition. Microstructural analysis of the brazed joints was carried out with EDS and XRD. High bonding strength (>100 MPa) was obtained with both Ag and Cu-Ag nanopastes. It was concluded that the Cu-Ag nanopastes form stronger braze joints than the BAg-8 brazing alloy as a result of Hall-Petch strengthening. It has also been concluded that the addition Ag nanoparticles or Ag nanowires to the Cu-Ag core-shell nanowire paste have a significant impact on the bonding strength and fracture of the Cu-Ag joints.",

keywords = "Brazing, Core-shell, Inconel, Laser, Nanojoining, Nanopaste",

author = "Denzel Bridges and Chaoli Ma and Zane Palmer and Shutong Wang and Zhili Feng and Anming Hu",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = nov,

doi = "10.1016/j.jmatprotec.2017.06.010",

language = "English",

volume = "249",

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journal = "Journal of Materials Processing Technology",

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T1 - Laser brazing of Inconel® 718 using Ag and Cu-Ag nanopastes as brazing materials

AU - Bridges, Denzel

AU - Ma, Chaoli

AU - Palmer, Zane

AU - Wang, Shutong

AU - Feng, Zhili

AU - Hu, Anming

PY - 2017/11

Y1 - 2017/11

N2 - Ag nanopastes composed of Ag nanoparticles or Ag nanowires and Cu-Ag nanopastes with Cu-Ag core-shell nanowires are used as a new brazing material for Inconel® 718. Ag nanoparticles or Ag nanowires are further added to the core-shell paste to adjust to a eutectic composition. Microstructural analysis of the brazed joints was carried out with EDS and XRD. High bonding strength (>100 MPa) was obtained with both Ag and Cu-Ag nanopastes. It was concluded that the Cu-Ag nanopastes form stronger braze joints than the BAg-8 brazing alloy as a result of Hall-Petch strengthening. It has also been concluded that the addition Ag nanoparticles or Ag nanowires to the Cu-Ag core-shell nanowire paste have a significant impact on the bonding strength and fracture of the Cu-Ag joints.

AB - Ag nanopastes composed of Ag nanoparticles or Ag nanowires and Cu-Ag nanopastes with Cu-Ag core-shell nanowires are used as a new brazing material for Inconel® 718. Ag nanoparticles or Ag nanowires are further added to the core-shell paste to adjust to a eutectic composition. Microstructural analysis of the brazed joints was carried out with EDS and XRD. High bonding strength (>100 MPa) was obtained with both Ag and Cu-Ag nanopastes. It was concluded that the Cu-Ag nanopastes form stronger braze joints than the BAg-8 brazing alloy as a result of Hall-Petch strengthening. It has also been concluded that the addition Ag nanoparticles or Ag nanowires to the Cu-Ag core-shell nanowire paste have a significant impact on the bonding strength and fracture of the Cu-Ag joints.

KW - Brazing

KW - Core-shell

KW - Inconel

KW - Laser

KW - Nanojoining

KW - Nanopaste

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