Electron Beam Brazing of Titanium and Stainless Steel Dissimilar Joints with Ag-Based Filler

Author:

Śliwiński Piotr1,Kwieciński Krzysztof1,Kopyściański Mateusz2

Affiliation:

1. Institute of Welding

2. AGH University of Science and Technology

Abstract

In this work, electron beam was used for butt brazing of austenitic stainless steel with grade 2 titanium. Due to its low solidus temperature and high silver content, AWS BAg-21 filler containing Ag, Cu, Sn and Ni was selected. The joints were brazed with a defocused oscillating beam using offset. The resulting brazed joints were subjected to static tensile testing, light microscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) analysis and hardness tests. By using appropriate parameters it was possible to reduce the phenomenon of diffusion of titanium atoms into the joint, which improved the properties of the obtained joints. The maximum tensile strength obtained was 244.2 MPa.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Reference17 articles.

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2. M. St. Węglowski et al.: Electron beam welding - characteristics of the method. Welding Institute Bulletin, vol. 58(2014), no. 3, pp.25-32.

3. P. Śliwiński, K. Kwieciński: Electron beam brazing of austenitic stainless steel AISI 304. Welding Institute Bulletin, vol. 65(2021), no. 3, pp.55-62.

4. P. Śliwiński, K. Kwieciński, M. Piotrowski.: Investigation of brazing process of titanium sheets by EBB method. Conference Proceedings: Symposium of the Welding Faculties and Departments Modern applications of welding technologies,, Poland, pp.185-196 (2021).

5. W. Ting et al.: Feasibility study on feeding wire electron beam brazing of pure titanium using an electron gun for space welding. Vacuum, vol. 180 (2020).

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