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17. Crystallography and Mechanical Properties of Wire Arc Additively Manufactured Al5356 Components

Author

Valkov, Stefan, Kotlarski, Georgi, Ormanova, Maria, Doynov, Nikolay, Ossenbring, Ralf, and Petrov, Peter

Abstract

In this study, we present results of the evolution of the crystallographic texture and imperfections, as well as the corresponding mechanical properties of wire and arc additively manufactured (WAAM) Al5356 specimens, studied by X-ray diffraction (XRD) and tensile testing, respectively. The results show that the phase composition is in the form of a face-centred cubic (fcc) crystal structure, corresponding to the base material, as well as some traces of oxide phase Al2O3. The WAAM specimen growing is accompanied by a slight change in the preferred crystallographic orientation, from (111) to (200) and a decrease in the imperfections concentration. Also, it was found that the ultimate tensile strength (UTS), yield strength (YS), and elongation slightly decrease from the initial to the more advanced stages of growth.

Published
2021

19. Entwicklung und Analyse einer Fügestrategie für FKV/Metall-Mischverbindungen auf Basis der CMT-Pinschweißtechnik.

Author

Shapovalov, Oleg, Ost, Lucas, Kuke, Felix, Doynov, Nikolay, Ambrosio, Marcello, Seidlitz, Holger, and Michailov, Vesselin

Subjects
JOINING processes, LIGHTWEIGHT construction, METALLIC composites, TENSILE tests, WELDING, THERMOPLASTIC composites
Abstract

Copyright of Joining Plastics / Fügen von Kunststoffen is the property of DVS Media GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2023

30. Distortion analysis of heat spot straightening thin-walled welded structures: part 1: formation of the plastic deformation zone.

Author

Doynov, Nikolay and Michailov, Vesselin

Subjects
*DEFORMATIONS (Mechanics), *ANALYTICAL mechanics, *PLASTICS, *WELDING, *TEMPERATURE
Abstract

The work deals with the elastic-plastic thermo-mechanical deformation process after spot heating of large thin plates. It promotes a new theoretical model of the process. The main target is to clarify the kinetics of the plastic strain formation during thermal straightening and to explore the main interactions. For this purpose, a simplified mechanical problem is formulated and applied. As a result, definite thermo-mechanical relations between temperature, initial strain, and accumulated plastic strain are obtained. Finally, a verification study is presented and discussed. The results contribute to extending the knowledge about the process and to establishing a theoretical background for development of applied analytical or analytical-numerical approaches for practical use in the designing and planning phases in welding production. An application to a particular case is described in an accompanying paper (part 2). [ABSTRACT FROM AUTHOR]

Published
2018
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