NDLI: Investigations about the influence of the time–temperature curve on the formation of intermetallic phases during electron beam welding of steel

Content Provider	Springer Nature Link
Author	Reisgen, U. Otten, C. Schönberger, J.
Copyright Year	2014
Abstract	Electron beam welding of square butt joints has been used for the joining of the low-alloy steel DC05 and the aluminium alloy AlMg$_{3}$ without filler materials. To this end, a clamping device which allows free expansion and shrinking of the plates and also in situ heating by the electron beam has been developed. In order to examine the influence which the time–temperature curve at the edge exerts on the formation of the intermetallic phases, in a test series, the preheating temperature of the steel plate has been successively increased from 100 to 500 °C. It has been possible to identify two intermetallic phases by EBSD analysis—on the steel side, the η-phase (Al$_{5}$Fe$_{2}$) and, on the aluminium side, the Θ-phase (Fe$_{4}$Al$_{13}$). Through the correlation of the measured individual phase widths, the evaluation of the temperature curves and the results from the quasi-static tensile tests, the factors which exert influence on the development of various intermetallic phases have been identified. A maximum tensile strength of 200 MPa with a total phase width of 2.3 μm has been achieved.
Starting Page	443
Ending Page	454
Page Count	12
File Format	PDF
ISSN	00432288
Journal	Welding in the World
Volume Number	58
Issue Number	4
e-ISSN	18786669
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-04-16
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aluminium alloys Intermetallics Ultimate tensile strength Metallic Materials EB welding Theoretical and Applied Mechanics Continuum Mechanics and Mechanics of Materials Butt joints
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Mechanical Engineering

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