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TEM and Synchrotron X-ray Study of the Evolution of Phases Formed During Bonding of IN718/Al/IN718 Couples by TLPB

Poliserpi, Mariana and Barriobero Vila, Pere and Requena, Guillermo and Noel Gercia, Laura and Tolley, Alfredo and Poletti, Cecilia and Vojtek, Tomáš and Weiser, Adam and Schell, Norbert and Stark, Andreas and Boeri, Roberto and Sommadossi, Silvana (2021) TEM and Synchrotron X-ray Study of the Evolution of Phases Formed During Bonding of IN718/Al/IN718 Couples by TLPB. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science. Springer. doi: 10.1007/s11661-021-06159-y. ISSN 1073-5623.

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Official URL: https://doi.org/10.1007/s11661-021-06159-y

Abstract

This study investigates the microstructure across the interconnection zone of IN718/Al/IN718 couples obtained by the Transient Liquid Phase Bonding (TLPB) process at temperatures ranging from 800 °C to 1000 °C. The crystal structure and the chemical composition of the phases formed, including the AlNi intermetallic, were evaluated using TEM-EDS. The evolution of the AlNi layer as a function of bonding time was studied by in situ high energy synchrotron x-ray diffraction. The AlNi lattice parameter increases up to 2.9401 Å and subsequently decreases with the annealing time due to changes in the chemical composition of AlNi. This behavior is related to the formation of two distinct layers of AlNi: Al-rich AlNi and Ni-rich AlNi. The split of the AlNi phase indicates that a chemical partition takes place when Ni and Al atomic concentrations are approximately equal. The growth kinetics of both layers are controlled by diffusion with different growth rate constants. These results contribute to the understanding of the solid-state transformations occurring in a multicomponent and multilayered TLP bond under isothermal conditions.

Item URL in elib:https://elib.dlr.de/141342/
Document Type:Article
Additional Information:Referierte Publikation - Ja
Title:TEM and Synchrotron X-ray Study of the Evolution of Phases Formed During Bonding of IN718/Al/IN718 Couples by TLPB
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Poliserpi, MarianaUNSPECIFIEDUNSPECIFIED
Barriobero Vila, PerePere.BarrioberoVila (at) dlr.dehttps://orcid.org/0000-0002-4412-3729
Requena, GuillermoGuillermo.Requena (at) dlr.deUNSPECIFIED
Noel Gercia, LauraUNSPECIFIEDUNSPECIFIED
Tolley, AlfredoUNSPECIFIEDUNSPECIFIED
Poletti, CeciliaUNSPECIFIEDUNSPECIFIED
Vojtek, TomášUNSPECIFIEDUNSPECIFIED
Weiser, AdamUNSPECIFIEDUNSPECIFIED
Schell, NorbertHZG, GeesthachtUNSPECIFIED
Stark, AndreasHZG, GeesthachtUNSPECIFIED
Boeri, RobertoUNSPECIFIEDUNSPECIFIED
Sommadossi, SilvanaCaracterización de Materiales, Universidad Nacional del Comahue / IITCI-CONICET, Neuquén, ArgentinaUNSPECIFIED
Date:February 2021
Journal or Publication Title:Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1007/s11661-021-06159-y
Publisher:Springer
ISSN:1073-5623
Status:Published
Keywords:Transient Liquid Phase Bonding, Synchrotron radiation, in situ X-ray diffraction
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Material Design and New Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research
Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Barriobero Vila, Pere
Deposited On:31 Mar 2021 08:25
Last Modified:31 Mar 2021 08:25

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