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14. Microstructure and Properties in Metals and Alloys (Volume 2).

Author

Di Schino, Andrea and Testani, Claudio

Subjects
ALLOYS, TANTALUM, METAL microstructure, HEAT resistant alloys, SHAPE memory alloys, SUBMERGED arc welding, MATERIALS science, IRON alloys, POWDERS
Abstract

This document is a summary of two journal articles in the field of materials science. The first article discusses the importance of microstructure design in achieving desired material properties, with a focus on metals and alloys in aeronautical and aerospace applications. It includes a list of related articles covering topics such as welding and phase transformation. The second article is a compilation of various research studies in materials science, covering topics such as the effects of boron additions on alloy microstructure and the properties of porous alloys. Both articles provide valuable insights into the behavior and properties of different materials. The document acknowledges the contributions of the authors and reviewers and expresses gratitude to the publisher, MDPI. [Extracted from the article]

Published
2024
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20. Evaluation of Austenitic Stainless Steel ER308 Coating on H13 Tool Steel by Robotic GMAW Process.

Author

Hernandez-Flores, Jorge Eduardo, Rodriguez-Vargas, Bryan Ramiro, Stornelli, Giulia, Pérez, Argelia Fabiola Miranda, García-Vázquez, Felipe de Jesús, Gómez-Casas, Josué, and Di Schino, Andrea

Subjects
AUSTENITIC stainless steel, GAS metal arc welding, STAINLESS steel, TOOL-steel, ELECTRIC welding, CARBON steel, SURFACE coatings, ELECTRIC metal-cutting, STAINLESS steel corrosion
Abstract

Within the drilling, petrochemical, construction, and related industries, coatings are used to recover components that failed during service or to prevent potential failures. Due to high stresses, such as wear and corrosion, which the materials are subjected to, industries require the application of coating between dissimilar materials, such as carbon steels and stainless steels, through arc welding processes. In this work, an austenitic stainless steel (ER308) coating was applied to an H13 tool steel substrate using the gas metal arc welding (GMAW) robotic process. The heat input during the process was calculated to establish a relationship between the geometry obtained in the coating and its dilution percentage. Furthermore, the evolution of the microstructure of the coating, interface, and substrate was evaluated using XRD and SEM techniques. Notably, the presence of martensite at the interface was observed. The mechanical behavior of the welded assembly was analyzed through Vickers microhardness, and a pin-on-disk wear test was employed to assess its wear resistance. It was found that the dilution percentage is around 18% at high heat input (0.813 kJ/mm) but decreases to about 14% with reduced heat input. Microhardness tests revealed that at the interface, the maximum value is reached at about 625 HV due to the presence of quenched martensite. Moreover, increasing the heat input favors wear resistance. [ABSTRACT FROM AUTHOR]

Published
2024
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43. TC METALLURGY PHYSICS AND MATERIALS SCIENCE

Author

Paola, Bassani, Riccardo, Donnini, Alberto, Castellero, Ettore, Anelli, Livio, Battezzati, Riccardo, Casati, Alberto, Coda, DI SCHINO, Andrea, Annalisa, Fortin, Saulius, Kaciulis, Paola, Leo, and Mattia, Merlin

Published
2021

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