Carbon precipitation on the bonding line between deposited material and base material using an additive manufacturing process
Abstract
The additive manufacturing (AM) technique creates parts from successive deposition of material layer by layer. What makes this process a great industrial power is the savings in raw materials, compared to other types of manufacturing processes, as well as the manufacture of complex or customized parts, which other techniques would not be able to meet, or would depend on complementary processes. However, when dealing with metal MA, more precisely the method using the electric arc, high temperatures are required for wire fusion, generating heat transfers between the materials. Thus, this study seeks to understand the influence of temperature on the behavior of carbon precipitation on the contact surface between the base plate and the layers of material deposited by this process. Two consumables were evaluated, AWS A5.18 ER70S-6, and AWS A5.20 E71T-1C wire. For mechanical characterization, a Vickers microhardness test was performed, and for structural evaluation, metallographic analyses were performed. After the microhardness test, an increase in hardness on the outside of the wall of 11 % was found for the E71T-1C wire, and 17 % for the ER70S-6 wire, however, for the E71T-1C material, this value was maintained with a layer of up to 0.3 millimeters, while for the ER70S-6 material, this layer was 0.1 millimeters. The metallographic evaluation showed carbon precipitation from the base material to the added material, as well as the appearance of dendrites and Widmanstätten ferrite in the deposited metals.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2024 Henrique Cechinel Casagrande , Anderson Daleffe , Gilson de March , Carlos Antônio Ferreira , Joélson Vieira da Silva , Hadrian Martins, Lirio Schaeffer , Jovani Castelan , Daniel FritzenAuthor(s)
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Henrique Cechinel Casagrande
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Anderson Daleffe
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Gilson de March
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Carlos Antônio Ferreira
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Joélson Vieira da Silva
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Hadrian Martins
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Lirio Schaeffer
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Jovani Castelan
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Daniel Fritzen