Publication
Title
Enhancement of toughness of Al-to-steel Friction Melt Bonded welds via metallic interlayers
Author
Abstract
The toughness of Al-to-steel welds decreases with increasing thickness of the intermetallic (IM) layer formed at the interface. Co plating has been added as interlayer in Al-to-steel Friction Melt Bonded (FMB) welds to control the nature and thickness of the IM layer. In comparison to a weld without interlayer, Co plating brings about a reduction of the thickness of the IM layer by 70%. The critical energy release rate of the crack propagating in the weld is used as an indicator of toughness. It is evaluated via an adapted crack propagation test using an energy conservation criterion. For a weld without interlayer, critical energy release rate is found to increase when the thickness of the intermetallic layer decreases. When the intermetallic layer is thick, the crack propagates in a brittle manner through the intermetallic whereas, at low layer thickness, the crack deviates and partially propagates through the Al plate, which causes an increase of toughness. The use of a Co interlayer brings about an increase of toughness by causing full deviation of the crack towards the Al plate.
Language
English
Source (journal)
Materials science and engineering: part A: structural materials: properties, microstructure and processing. - Lausanne
Publication
Lausanne : 2019
ISSN
0921-5093
Volume/pages
740(2019), p. 274-284
ISI
000453494500029
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Project info
Multi-schaal mechanica van grensvlak gecontroleerde materialen
ALUFIX: Friction stir processing based local damage mitigation and healing in aluminium alloys
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 12.11.2018
Last edited 16.09.2021
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