PSI - Issue 30

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2020) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 30 (2020) 216–223

© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the EURASTRENCOLD - 2020 guest editors Currently, casting, pressing and other conventional methods are used to create metal parts of complex shape. The disadvantages of such methods are the complexity and multi-stage peculiarity of the process, high-energy consumption, and poor efficiency. This work considers the technology of wire-feed electron-beam additive manufacture, allowing increasing productivity at the expense of decreasing the amount of mechanical treatment and consumable raw materials. Despite the number of advantages, there are still questions, related to the study of the influence of technological parameters of electron-beam additive manufacture on the structure and properties of articles. Therefore, the influence of technological parameters on the stability of the process of layerwise application and formation of the articles from the AISI 304 wire by the method of electron-beam additive manufacture has been studied in the work. The electron beam current, the linear print speed and the layer fill factor at a constant accelerating voltage were used as variable parameters. It has been established that on the whole it is possible to form the article without defects and without surface melting of the previously formed layers with the ultimate tensile strength of 583 MPa with the layer fill factor equal to 1.3, current of 40 А , and a linear velocity of 180 mm/min. The use of modes with a linear velocity of 320 mm/min and the layer fill factor of 1.3, when the current varies, does not allow forming a sample as a whole. It has been shown that when the process parameters of electron-beam additive manufacture vary, providing formation of the article as a whole, it is possible to obtain articles with the ultimate tensile strength of 558-595 MPa. © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the EURASTRENCOLD - 2020 guest editors Keywords: Electron-beam additive manufacturing; austenitic stainless steel; electron-beam current; linear print speed; layer fill factor IX Eurasian Symposium on the problems of strength and resource in low climatic temperatures (EURASTRENCOLD-2020) Process Control Features of Electron-Beam Additive Manufacturing of Austenitic Stainless Steel Anna Zykova*, Sergei Nikonov, Veronika Utyaganova, Nikolai Shamarin, Alexei Ivanov, Andrey Chumaevskii Institute of Strength Physics and Materials Sciences SB RAS, 2/4 Academicheskii Avenue, Tomsk 634055, Russia Abstract

* Corresponding author. Tel.: +7-(3822)-28-68-63. E-mail address: zykovaap@mail.ru

2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open-access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of the EURASTRENCOLD - 2020 guest editors

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the EURASTRENCOLD - 2020 guest editors 10.1016/j.prostr.2020.12.033