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View article: Solute Redistribution During Aging in a Laser-Based Powder Bed Fusion-Produced Fe-18Ni-9Co-5Mo-Ti Maraging Steel
Solute Redistribution During Aging in a Laser-Based Powder Bed Fusion-Produced Fe-18Ni-9Co-5Mo-Ti Maraging Steel Open
Solute distribution during the laser-based powder bed fusion of metals process is highly complex because of solidification. This study builds on a previous investigation of how solute heterogeneities across different scales influence phase…
View article: Effect of layer thickness and laser emission mode on the microstructure of an additive manufactured maraging steel
Effect of layer thickness and laser emission mode on the microstructure of an additive manufactured maraging steel Open
In this work, a high-performance maraging steel M300 was processed by laser powder bed fusion, where the layer thickness and the laser emission mode were modified. As-built microstructures were studied by considering the metallurgical phen…
View article: Crashworthiness evaluation of press hardened steels with different lath-like microstructures.
Crashworthiness evaluation of press hardened steels with different lath-like microstructures. Open
The deployment of Press Hardened Steels (PHSs) in the Body-In-White structures that took place during the two last decades is at the origin of a breakthrough weight saving on vehicles while guaranteeing the safety requirements of the autom…
View article: Effect of processing parameters on texture and variant selection of as-built 300 maraging steel processed by laser powder bed fusion
Effect of processing parameters on texture and variant selection of as-built 300 maraging steel processed by laser powder bed fusion Open
Among the materials that might be manufactured with laser powder bed fusion (LPBF), one can highlight maraging steels, with excellent weldability, strength and fracture toughness. However, the effects of the processing parameters and the m…
View article: Creep strength boosted by a high-density of stable nanoprecipitates in high-chromium steels
Creep strength boosted by a high-density of stable nanoprecipitates in high-chromium steels Open
There is a need worldwide to develop materials for advanced power plants with steam temperatures of 700°C and above that will achieve long-term creep-rupture strength and low CO2 emissions. The creep resistance of actual 9-12Cr steels is n…
View article: Assessing the implementation of machine learning models for thermal treatments design
Assessing the implementation of machine learning models for thermal treatments design Open
The latest progress in machine learning (ML) algorithms enabled to predict some steel physical properties previously modelled by linear regression (LR), such as the Ms temperature. Authors claimed that the performance given by ML models co…
View article: Comparative Toxicity of Fly Ash: An In Vitro Study
Comparative Toxicity of Fly Ash: An In Vitro Study Open
Fly ash produced during coal combustion is one of the major sources of air and water pollution, but the data on the impact of micrometer-size fly ash particles on human cells is still incomplete. Fly ash samples were collected from several…
View article: Dissimilar welding between conventional and high strength low alloy naval steels with the use of robotic metal cored arc welding
Dissimilar welding between conventional and high strength low alloy naval steels with the use of robotic metal cored arc welding Open
The increasing trend of high strength low alloy steel application in the shipbuilding industry dictates the necessity for an investigation of their welds with conventional high strength steels. In this study, conventional and high strength…
View article: Examining the creep strengthening nanoprecipitation in novel highly reinforced heat resistant steels
Examining the creep strengthening nanoprecipitation in novel highly reinforced heat resistant steels Open
Here we studied the creep strengthening nanoprecipitation in novel heat resistant steels strengthened by a high density of stable nanoprecipitates. The results show that the high number density of MX nanoprecipitates within the martensitic…
View article: Design and Development of Complex Phase Steels with Improved Combination of Strength and Stretch-Flangeability
Design and Development of Complex Phase Steels with Improved Combination of Strength and Stretch-Flangeability Open
This study presents the design and development of a hot-rolled bainitic steel, presenting a good combination of strength and stretch-flangeability, for automotive applications. Ti, Nb, and Mo were added in the steel composition in order to…
View article: High-Chromium (9-12Cr) Steels: Creep Enhancement by Conventional Thermomechanical Treatments
High-Chromium (9-12Cr) Steels: Creep Enhancement by Conventional Thermomechanical Treatments Open
There is a worldwide need to develop materials for advanced power plants with steam temperatures of 700°C and above which have the capacity to achieve high efficiency and low CO2 emissions. This request involves the development of new grad…
View article: The Influence of Texture on the Ductile-to-Brittle Transition Behavior in Fe20Cr4.5Al Oxide Dispersion Strengthened Alloy
The Influence of Texture on the Ductile-to-Brittle Transition Behavior in Fe20Cr4.5Al Oxide Dispersion Strengthened Alloy Open
This paper reports on hardness, tensile properties and notch impact bending toughness values of an Fe20Cr4.5Al oxide dispersion strengthened (ODS) alloy specifically processed to achieved different preferential orientations: random, , and…
View article: Effect of Extensive and Limited Plastic Deformation on Recrystallized Microstructure of Oxide Dispersion Strengthened Fe-Cr-Al Alloy
Effect of Extensive and Limited Plastic Deformation on Recrystallized Microstructure of Oxide Dispersion Strengthened Fe-Cr-Al Alloy Open
Ferritic oxide dispersion-strengthened alloys (ODS) are manufactured using a mechanical alloying process. The development of a coarse-grained microstructure during recrystallization has been detected and discussed by several authors, but t…
View article: Rapid fabrication and characterization of AISI 304 stainless steels modified with Cu additions by additive alloy melting (ADAM)
Rapid fabrication and characterization of AISI 304 stainless steels modified with Cu additions by additive alloy melting (ADAM) Open
Rapid alloy prototyping is quickly emerging as a manufacturing approach to design novel structural alloys since allows producing low volume of high quality castings quickly at low cost. Thus, a large number of alloys can be produced and te…
View article: Influence of Texture on Impact Toughness of Ferritic Fe-20Cr-5Al Oxide Dispersion Strengthened Steel
Influence of Texture on Impact Toughness of Ferritic Fe-20Cr-5Al Oxide Dispersion Strengthened Steel Open
Fe-based oxide dispersion strengthened (ODS) steels are oriented to applications where high operating temperatures and good corrosion resistance is paramount. However, their use is compromised by their fracture toughness, which is lower th…
View article: Effect of Ausforming Temperature on the Microstructure of G91 Steel
Effect of Ausforming Temperature on the Microstructure of G91 Steel Open
The development of thermomechanical treatments (TMT) has a high potential for improving creep-strength in 9Cr-1Mo ferritic/martensitic steel (ASTM T/P91) to operate at temperatures beyond 600 °C. To maximize the number of nanoscale MX prec…
View article: The Non-Steady State Growth of Pearlite outside the Hultgren Extrapolation
The Non-Steady State Growth of Pearlite outside the Hultgren Extrapolation Open
The goal of this paper is to analyse the effect of adding Al on the non-steady pearlite growth occurring in a Fe–C–Mn system. The results are discussed in terms of the partitioning of elements across the austenite/ferrite and austenite/cem…