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Metal Science and Heat Treatment
Published in: Metal Science and Heat Treatment 7-8/2017

11-11-2017

Special Features of the Structure of Laser-Welded Joints of Dissimilar Alloys Based on Titanium and Aluminum

Authors: A. A. Nikulina, A. I. Smirnov, G. A. Turichin, O. G. Klimova-Korsmik, K. D. Babkin

Published in: Metal Science and Heat Treatment | Issue 7-8/2017

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Abstract

The structure of laser-welded joints of parts having different thicknesses fabricated from alloys based on aluminum and titanium has been studied. Results of transmission and scanning electron microscopy measurements and x-ray diffraction analysis show that the diffusion interaction of microvolumes of two alloys in the weld leads to the formation of two interlayers: (i) a continuous intermetallic TiAl layer with thickness below 1 μm adjacent to the titanium alloy and (ii) a layer consisting of TiAl3 intermetallic dendrites with thickness of 2 – 6 μm adjacent to the TiAl layer. The average microhardness of the intermetallic layer is about 490 HV.
previous article A Study of the Structure of Steel – Titanium Joints Formed by Diffusion Welding with the Use of Ultrafine Nickel Powder
next article Mechanical Properties of Steel P92 Welded Joints Obtained By TIG Technology

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Metadata
Title
Special Features of the Structure of Laser-Welded Joints of Dissimilar Alloys Based on Titanium and Aluminum
Authors
A. A. Nikulina
A. I. Smirnov
G. A. Turichin
O. G. Klimova-Korsmik
K. D. Babkin
Publication date
11-11-2017
Publisher
Springer US
Published in
Metal Science and Heat Treatment / Issue 7-8/2017
Print ISSN: 0026-0673
Electronic ISSN: 1573-8973
DOI
https://doi.org/10.1007/s11041-017-0185-y

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