http://revistas.santototunja.edu.co/index.php/ingeniomagno/issue/feed 2025-12-04T17:50:40-05:00 PhD (c) Ana Rocío Córdoba Malaver ingeniomagno@ustatunja.edu.co Open Journal Systems <p>The digital repository with the information available to authors that includes the reasons for acceptance, revision or rejection of each items is available on the server of the Reserarch Unit of the University of Santo Tomas sectional Tunja, which can be accessed upon request the editor of the magazine.</p> <p><a href="https://drive.google.com/drive/folders/0B-LprCO5ZZAxLTJuX2Mwd">Authors repository</a></p> <p><strong>Call for articles to be published in the journal Ingenio Magno Vol. 15 No. 1</strong></p> <p>The Editorial Committee of the journal Ingenio Magno invites the academic-research community to submit their unpublished articles resulting from research results, in Spanish, English or Portuguese, in the field of engineering: Electronics, Mechanical, Systems and Computing, Civil, Chemical, Metallurgical and Environmental, and other related fields. Candidates to be published in Volume 15 No. 1, first half of the year 2024.</p> <p>The publication process takes between 6 to 8 weeks, time elapsed once the article and cover letter are submitted (For this purpose, the article must comply with the entire editorial process).</p> http://revistas.santototunja.edu.co/index.php/ingeniomagno/article/view/3333 2025-12-04T17:50:39-05:00 Juan Rodrigo Salamanca Sarmiento juan.salamanca@usantoto.edu.co Nelson Iván Villamizar Cruz nelson.villamizar@usantoto.edu.co Giovanny Casallas Ramírez edwin.casallasr@usantoto.edu.co Juan Andrés García Acosta juan.garciaa@usantoto.edu.co Juan David Rivera Zuluaga juan.riveraz@usantoto.edu.co

<p>The study focuses on analyzing the microstructure of low-carbon AISI 1020 steel after being subjected to the Shielded Metal Arc Welding (SMAW) process. For this purpose, samples were prepared from both the base material and the heat-affected zones (HAZ) produced during welding. The specimens were mounted in polyester resin, polished, and chemically etched with a 5% Nital solution, which allowed the phases present in the material—such as ferrite, pearlite, and martensite—to be highlighted. Using a metallographic microscope, images were captured at different magnifications (100x, 200x, and 400x), showing that areas near the weld bead in the base material exhibited a ferritic matrix with dispersed pearlite and a fine grain size; in the HAZ grain growth and acicular morphologies compatible with high cooling-rate transformations (bainite/martensite) were observed; while the weld bead showed columnar grains with a predominance of ferrite and a lower pearlitic fraction. These results allow a correlation to be established between the welding process parameters and the microstructural changes, which is essential for optimizing the quality and integrity of welded joints.</p>

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