FORMATION OF THE STRUCTURE OF WELDED SPECIMENS FROM AUSTENITIC STEEL UNDER VARIOUS EXTERNAL CONDITIONS

10.25712/ASTU.1811-1416.2023.01.012

Authors

  • Dmitriy A. Chinakhov Siberian State Industrial University, Kirova Str., 42, Novokuznetsk, 654007, Russia
  • Kirill O. Akimov Institute of Strength Physics and Materials SB RAS, Akademicheskii Pr. 2/4, 634055, Tomsk, Russia

Keywords:

additive manufacturing, heat distribution, thermal limiters, structure, hardness, arc welding

Abstract

In this work, the influence of forming limiters (shaping blocks) on the structure and hardness of AISI 308LSi stainless steel specimens obtained by layer-by-layer arc surfacing in argon is studied. During experimental surfacing of samples using graphite limiters, a more uniform growth of structural elements is observed, without sharp transitions between the deposited layers, in contrast to the other two types of samples. An analysis of the results of measuring the hardness of all three types of samples showed that the highest values are observed in a sample obtained using graphite skids, due to more active diffusion of δ-ferrite into austenite by an average of 12 %, compared with the samples under study, despite the overall increase in size dendrites.

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Published

2023-03-31

How to Cite

Chinakhov Д. А. ., & Akimov К. О. . (2023). FORMATION OF THE STRUCTURE OF WELDED SPECIMENS FROM AUSTENITIC STEEL UNDER VARIOUS EXTERNAL CONDITIONS: 10.25712/ASTU.1811-1416.2023.01.012. Fundamental’nye Problemy Sovremennogo Materialovedenia / Basic Problems of Material Science, 20(1), 99–108. Retrieved from https://ojs.altstu.ru/index.php/fpsm/article/view/407

Issue

Vol. 20 No. 1 (2023): Fundamental’nye problemy sovremennogo materialovedenia (Basic Problems of Material Science (BPMS))

Section

SECTION 2. METAL SCIENCE AND HEAT TREATMENT OF METALS AND ALLOYS