Michelangelo Mortello

Role of vanadium in welding of flat products in high strength low alloyed steels: microstructure and mechanical properties

Andrea Di Schino, Michelangelo Mortello, Bryan Ramiro Rodríguez-Vargas, Rolf Schmidt et autres

The use of High Strength Low-Alloy (HSLA) steels in structural applications requires detailed analysis of their microstructure to optimize the strength and toughness of welded joints. During multi-pass welding, thermal cycling generates a complex heat-affected zone (HAZ) with subregions containing brittle phases …

Role of vanadium in welding of flat products in high strength low alloyed steels: microstructure and mechanical properties

Andrea Di Schino, Michelangelo Mortello, Bryan Ramiro Rodríguez-Vargas, Rolf Schmidt et autres

The use of High Strength Low-Alloy (HSLA) steels in structural applications requires detailed analysis of their microstructure to optimize the strength and toughness of welded joints. During multi-pass welding, thermal cycling generates a complex heat-affected zone (HAZ) with subregions containing brittle phases …

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Estimation of the operation reliability of compressor suction vessels in oil and gas plants

MS Jaric, Ivana Vasovic Maksimovic, Michelangelo Mortello, Simon Sedmak et autres

MS. Jarić, IV. Maksimović, Michelangelo Mortello, Simon A. Sedmak, Sanja Z. Petronić; Estimation of the operation reliability of compressor suction vessels in oil and gas plants; 1st Biennial ESIS-CSIC Conference on Structural Integrity (BECCSI2025), Book of Abstracts, ISBN 978-86-900686-4-7, November 25-28, 2025, …

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Estimation of the operation reliability of compressor suction vessels in oil and gas plants

MS Jaric, Ivana Vasovic Maksimovic, Michelangelo Mortello, Simon Sedmak et autres

MS. Jarić, IV. Maksimović, Michelangelo Mortello, Simon A. Sedmak, Sanja Z. Petronić; Estimation of the operation reliability of compressor suction vessels in oil and gas plants; 1st Biennial ESIS-CSIC Conference on Structural Integrity (BECCSI2025), Book of Abstracts, ISBN 978-86-900686-4-7, November 25-28, 2025, …

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The Vanadium Micro-Alloying Effect on the Microstructure of HSLA Steel Welded Joints by GMAW

Giulia Stornelli, Bryan Ramiro Rodríguez-Vargas, Anastasiya Tselikova, Rolf Schimdt et autres

Structural applications that use High-Strength Low-Alloy (HSLA) steels require detailed microstructural analysis to manufacture welded components that combine strength and weldability. The balance of these properties depends on both the chemical composition and the welding parameters. Moreover, in multi-pass welds, thermal cycling …

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Investigation of hydrogen embrittlement of an API 5 L X52 pipeline through potentiostatic charging

Filippo Alberto Recanzone, Federico Scaglione, Flavio Catalano, Roberto Spotorno et autres

ABSTRACT The evolving global energy landscape, shaped by climate change and geopolitical challenges, accelerates the shift to renewable sources. Hydrogen is a promising energy carrier for retrofitting Europe’s gas pipeline infrastructure at low cost. However, the susceptibility of steel pipelines to hydrogen …

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Development of an experimental setup for testing X52 steel SENT specimens in electrolytic hydrogen to explore repurposing potential of pipelines

Flavio Catalano, Marco Palombo, Marco De Marco, Michelangelo Mortello et autres

Hydrogen is considered a key alternative to fossil fuels in the broader context of ecological transition. Repurposing natural gas pipelines for hydrogen transport is one of the challenges of this approach. However, hydrogen can diffuse into metallic lattices, leading to hydrogen embrittlement …

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Assessment of vanadium influence on the microstructure and mechanical behavior high-strength low-alloy steel welded joints

Giulia Stornelli, Bryan Ramiro Rodríguez-Vargas, Andrea Di Schino, Rolf Schmidt et autres

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Effect of V on the Strengthening and Fatigue Behavior of a High-Strength Low-Alloy Steel Welded Joint

Аліна Целікова, Rolf Schmidt, Giulia Stomelli, Bryan Ramiro Rodríguez-Vargas et autres

ABSTRACT The development of high-strength low-alloy (HSLA) steels for structural applications, including wind towers, offshore structures and shipbuilding, requires a continuous effort to achieve the balance between high strength, toughness and weldability. During a multiple-pass welding, the intercritically reheated grain coarsened heat-affected …

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Using Fundamental Parameters and Artificial Neural Network for Controlling the Laser Welding of Metals

Michelangelo Mortello, Giuseppe Casalino, Alin Constantin Murariu

The present work aims to design an artificial neural network (ANN) for controlling the geometry of the fusion zone in different welding conditions. AA5754 aluminium plates with 6 mm thickness were welded in butt configuration by using an Yb-doped fiber laser in …

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Influence of Vanadium Micro-Alloying on the Microstructure of Structural High Strength Steels Welded Joints

Giulia Stornelli, Anastasiya Tselikova, Daniele Mirabile Gattia, Michelangelo Mortello et autres

The inter-critically reheated grain coarsened heat affected zone (IC GC HAZ) has been reported as one of the most brittle section of high-strength low-alloy (HSLA) steels welds. The presence of micro-alloying elements in HSLA steels induces the formation of microstructural constituents, capable …

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Experimental Investigation of Material Properties in FSW Dissimilar Aluminum-Steel Lap Joints

Michelangelo Mortello, Matteo Pedemonte, Nicola Contuzzi, Giuseppe Casalino

The friction stir lap welding of AA5083 H111 aluminum alloy and S355J2 grade DH36 structural steel was investigated. A polycrystalline cubic boron nitride with tungsten and rhenium additives tool was used. According to visual inspection, radiographic examination, and tensile test, it was …

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