Evaluation of the Possibility of Obtaining Welded Joints of Plates from Al-Mg-Mn Aluminum Alloys, Strengthened by the Introduction of TiB2 Particles
| Autor: | Ilya Zhukov, Dmitrii Tkachev, Anton P. Khrustalyov, Pavel Nikitin, Vladimir V. Platov, A. A. Kozulin, Alexander Vorozhtsov |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Alloy Weldability chemistry.chemical_element Welding engineering.material magnesium mechanical properties dispersion hardening структура law.invention law Aluminium Ultimate tensile strength Electron beam welding General Materials Science structure сварка Composite material welding modification Mining engineering. Metallurgy Metals and Alloys TN1-997 свариваемость дисперсионное твердение Strength of materials Grain size магний chemistry fracture алюминий aluminum engineering механические характеристики weldability |
| Zdroj: | Metals, Vol 11, Iss 1564, p 1564 (2021) Metals. 2021. Vol. 11, № 10. P. 1564 (1-12) Metals Volume 11 Issue 10 |
| ISSN: | 2075-4701 |
| Popis: | In the work, the possibility of obtaining strong welded joints of aluminum alloys modified with particles is demonstrated. For research, strengthened aluminum alloys of the Al-Mg-Mn system with the introduction of TiB2 particles were obtained. TiB2 particles in specially prepared Al-TiB master alloys obtained by self-propagating high-temperature synthesis were introduced ex situ into the melt according to an original technique using ultrasonic treatment. Plates from the studied cast alloys were butt-welded by one-sided welded joints of various depths. To obtain welded joints, the method of electron beam welding was used. Mechanical properties of the studied alloys and their welded joints under tension were studied. It was shown that the introduction of particles resulted in a change in the internal structure of the alloys, characterized by the formation of compact dendritic structures and a decrease in the average grain size from 155 to 95 µm. The change in the internal structure due to the introduction of particles led to an increase in the tensile strength of the obtained alloys from 163 to 204 MPa. It was found that the obtained joints have sufficient relative strength values. Relative strength values reach 0.9 of the nominal strength of materials already at the ratio of the welded joint depth to the thickness of the welded plates, equal to 0.6 for the initial alloy and in the range of 0.67–0.8 for strengthened alloys. |
| Databáze: | OpenAIRE |
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