Samuel Filgueiras Rodrigues

Samuel Filgueiras Rodrigues
Instituto Federal de Educação Ciência e Tecnologia do Maranhão (IFMA) | IFMA · Department of Mechanical and Materials Engineering

PhD

About

83
Publications
14,652
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
368
Citations
Introduction
Mining and Materials Engineering graduate (PhD) from McGill University (2018) with research focused on thermomechanical processing of metal alloys. Works at Federal Institute of Maranhao, Brazil as an associate Professor. Samuel does research in Materials Engineering, Physical Metallurgy and Physics. Their current project is 'Dynamic Transformation, recrystallization and recovery on metallic materials like steels, Ti alloys and Zirconium alloys.
Additional affiliations
July 2019 - January 2021
Instituto Federal de Educação Ciência e Tecnologia do Maranhão  (IFMA)
Position
  • Professor (Associate)
December 2014 - June 2018
McGill University
Position
  • Research Assistant
November 2011 - present
Instituto Federal de Educação Ciência e Tecnologia do Maranhão  (IFMA)
Position
  • Professor (Associate)
Education
January 2015 - June 2018
McGill University
Field of study
  • Mining and Materials Engineering
March 2011 - May 2013
March 2005 - December 2010

Publications

Publications (83)
Article
Full-text available
ISO 5832-9 high-nitrogen austenitic stainless steel has shown promising results in the fabrication of temporary and permanent orthopedic prostheses, exhibiting better mechanical strength and corrosion resistance than the traditional ISO 5832-1 (ASTM F 138) steel. Recent studies have revealed that this alloy possesses unique properties, such as high...
Article
Full-text available
Thermo-mechanically controlled rolling is a technique used to produce steel strips and plates. One of the steels widely used in the production of heavy plates for application in oil and gas pipelines is API X80. The hot rolling process of this family of steels consists of applying deformation passes at high temperatures, mainly above Ae3, inside th...
Article
High N-containing austenitic stainless steels have long been used as materials in orthopedic implants. For almost three decades, research has shown that ASTM F-1586 steel is an alternative for orthopedic applications involving severe loads and long implant survival rates in the human body. However, several studies have detected impaired mechanical...
Article
Full-text available
The CuFe2O4 photocatalysts were synthesized by the solution combustion synthesis method, followed by heat treatment at a temperature range of 400 to 1100 °C. Later, they were characterized for application in the photodegradation of synthetic dyes under visible radiation. The X-ray diffraction results showed the presence of cubic and tetragonal phas...
Article
Full-text available
The correlation between microstructure, crystallographic orientation and grain boundaries characteristics of an austenitic high manganese steel was systematically investigated. The as-received and cold-rolled specimens with 50% and 70% reduction were analyzed using Scanning Electron Microscopy (SEM), Electron Back-Scattered Diffraction (EBSD) and X...
Article
The evanescent Bloch waves in Bragg-type band gaps are important for the design of phononic structures with desirable properties. However, the evanescent waves in solid phononic crystals with piezomagnetism have not been reported yet. In this study, it is investigated the complex dispersion diagram of a 2-D piezomagnetic phononic structure. The imp...
Article
The plane wave expansion (PWE) and the extended plane wave expansion (EPWE) formulations are derived in order to obtain the complex dispersion relation of flexural waves in a metamaterial Mindlin-Reissner thick plate with multiple periodic resonators. These new formulations are useful to obtain more accurate results at higher frequencies than those...
Article
Full-text available
This research investigates the Z-Phase solubility product of austenitic stainless steel (ASS) ASTM F-1586 used as orthopedic implants under the solubilization procedure. Precipitate extraction by an electrolytic separation technique and analytical thermodynamic calculations as a function of the solubilization temperature and chemical composition we...
Article
Full-text available
In this work, the presence of dynamically formed ferrite above the Ae3 temperature during the physical simulation of hot rolling was presented. This unusual metallurgical process is known as dynamic transformation (DT). The metastable ferrite phase undergoes a reverse transformation when the temperature is held above the Ae3 by means of a diffusion...
Article
The unfolding characteristics of high-entropy alloys (HEAs) are challenging traditional materials science field with promise for innovative applications, including aerospace and defence. This makes them strong candidates for future applications in the aerospace and defense industries. This research focuses on the hot compressive behavior of equiato...
Article
Full-text available
The dispersion relation of elastic Bloch waves in 1-3 piezoelectric phononic structures (PPnSs) with Langasite (La3Ga5SiO14) inclusions in a polymeric matrix is reported. Langasite presents promising material properties, for instance good temperature behaviour, high piezoelectric coupling, low acoustic loss and high quality factor. Furthermore, Lan...
Article
Full-text available
In this work, the deformation behavior and thermodynamic aspect of four different steel grades were analyzed. This group of alloys includes a plain C-Mn, and three Nb-microalloyed steels grades. Two of the microalloyed grades are pipeline steel grades: a modified X-70 grade, and a typical X-80 steel. These materials were previously identified to pr...
Article
Full-text available
The use of thermomechanical control processing during hot rolling has played a significant role in improving the mechanical properties of steels in the past several decades. Accurate control of various metallurgical phenomena such as recrystallization, phase transformation and strain-induced precipitation has been the main target of steel industrie...
Article
Full-text available
This study aimed to obtain ceramic filters with bactericidal action for water disinfection. For this, aqueous suspensions of montmorillonite K10 clay were prepared at concentrations of 48%, 50%, and 52%. Later, these were impregnated into polymeric sponges in order to form the ceramic skeletons by using the replica technique. The ceramic filters we...
Article
Full-text available
Combustion in solution Photocatalysis Visible-light photocatalysis a b s t r a c t Zinc ferrites (ZnFe 2 O 4), with spinel-like structure, were produced by combustion reaction synthesis in solution and heat-treated at temperatures of 400e1100 C. The structural and chemical properties of the ZnFe 2 O 4 samples were investigated by X-ray diffraction...
Article
Full-text available
It has been well established that austenite can partially transform into ferrite during thermomechanical processing. The laboratory-scale strip and plate rolling simulations in the literature suggest that both forward and backward dynamic transformation (DT) can occur above the equilibrium Ae3 temperature. In this work, a five-pass Steckel mill rol...
Article
Ceramic pigments based on chromium-doped yttrium aluminate (YAl1-XCrXO3; x = 0.01; 0.03 and 0.05 mol%) were obtained by using chemical combustion method. Chemical processes with and without the use of mineralizers were employed. The modifications in the structure, morphology, optical and thermal properties caused by the inserted agents in the alumi...
Article
We investigate the complex band structure and forced response of flexural waves propagating in an elastic metamaterial thick plate. Mindlin-Reissner thick plate theory is considered. We study the influence of periodic arrays of spring-mass resonators attached to the surface of a homogeneous thick plate on the formation of Bragg-type and locally res...
Article
Full-text available
Hydroxyapatite is the main bones and teeth inorganic mineral component. This material has been an object of research aiming its use in biomaterials as bone replacement option for biomedical applications. In this investigation, the synthesis of hydroxyapatite was studied by the Hydrothermal (HT) and Microwave Irradiation (MW) methods. Here, paramete...
Article
Full-text available
We studied the dispersion diagram of a 2D magnetoelectroelastic phononic crystal (MPnC) with Kagomé lattice. The MPnC is composed of BaTiO3-CoFe2O4 circular scatterers embedded in a polymeric matrix. The improved plane wave expansion (IPWE) approach was used to calculate the dispersion diagram (only propagating modes) of the MPnC considering the cl...
Article
The correlation between hardening and softening in an ASTM F-1586 stainless steel used as biomaterial was investigated by means of hot torsion simulations. Multi-pass deformation under continuous cooling was employed to simulate industrial hot rolling. Samples were subjected to 17 deformation passes of strains of 0.20 and 0.30, strain rate of 1.0 s...
Article
Full-text available
In this work, stress relaxation technique was employed to analyze the softening-precipitation interaction in an ASTM F-1586 austenitic stainless steel, an alloy used in orthopedic implants. Hot compression tests were performed at temperature range of 800-1100 • C. Pre-strain of 5.0%, strain rate of 0.1 s −1 , and loading time exposure of 40 min wer...
Article
Full-text available
The occurrence of dynamic transformation of ferrite (DTF) above Ae3 has recently been proven to be an operative mechanism during hot deformation. This work is a preliminary description of the effects of DTF on the thermo-mechanical control processing (TMCP) in hot rolling of steels and a summary TMCP strategies is presented. The occurrence of dynam...
Article
A new iron-based alloy, M789 steel, has been recently introduced to the additive manufacturing (AM) industry, designed to be utilized in the laser powder bed fusion (LPBF). The effect of microstructural evolution on the hardness and tensile strength of the alloy was evaluated using optical and electron microscopy techniques. The crystallographic te...
Article
Dynamic transformation (DT) of austenite to ferrite can take place in the single austenite phase field during thermomechanical processing as shown in the literature. However, despite significant progress on this topic, limited real-time evidence of DT has been published. To address this concern, an in-situ X-ray diffraction measurement was carried...
Chapter
Austenite has been shown to dynamically transform into ferrite during Thermomechanical processing. The driving force is the softening that takes place during deformation, while the energy obstacles consist of the Free energy difference between austenite and ferrite as well as the shear dilatation and shear accommodation work. Phase transformation c...
Article
Full-text available
Hot-formed components are constantly exposed to hostile environments with corrosive substances. Microstructural changes caused by thermomechanical processing can be predicted to increase the corrosion resistance of austenitic stainless steels. The objective of this study is to understand the relationship between the dynamic softening mechanisms and...
Conference Paper
Nesse trabalho estudou-se o retardo na cinética de amaciamento estático do aço inoxidável austenitico ASTM F-1586 (ISO 5832-9) usado na confecção de implantes ortopédicos, por meio de ensaios de torção a quente isotérmico em duplo passe. Inicialmente as amostras foram aquecidas por indução até a temperatura de 1250 oC e mantidas por 300 s para solu...
Conference Paper
The application of thermo-mechanical control processing (TMCP) in hot rolling of steels has become a common routine since the last 60 years. The understanding of the physical metallurgy behind TMCP played a major role in the early developments. Physical and numerical simulation works are performed firstly to derive the fundamental metallurgical kno...
Conference Paper
When austenite is deformed above the Ae3 temperature, partial amount of it transforms dynamically into ferrite by a displacive mechanism. After unloading, it retransforms back into the stable austenite by a diffusional process. This influences the rolling load which decreases under isothermal condition or does not increase with decreasing temperatu...
Article
The thermomechanical behavior and the microstructural evolution during the hot deformation are important aspects of metal alloys during hot forging and rolling processes. Here, the correlation between dynamically recrystallized grain size (dDRX), steady-state stress (σss) and Zener–Hollomon (Z) parameter is investigated according to the Universal D...
Article
Partial amount of austenite can be dynamically transformed into ferrite above the Ae 3 temperature when it is being deformed. This happens by a displacive mechanism. On removal of the load, it retransforms back into the stable austenite by diffusional processes. Plate rolling simulation under continuous cooling conditions was carried out on a high...
Article
In this work, the retardation in the static softening kinetics of an austenitic stainless steel ASTM F-1586 (ISO 5832-9) used in the manufacture of orthopedic implants is investigated. Double-pass deformations were applied by means of torsion testing under isothermal conditions. The samples were initially heated to 1250 oC using an induction furnac...
Article
Full-text available
It has been previously demonstrated that austenite may undergo partial dynamic transformation (DT) during the plate rolling process. Austenite dynamically transforms into unstable ferrite during hot deformation even at very high temperatures. In this work, the plate rolling simulations, with emphasis on Steckel mill operations, through torsion test...
Article
Full-text available
We study the sound absorption coefficient of rubberized mortars in response to the incorporation of 7.5%, 15% and 30% of waste-tire rubbers in place of sand at a water-to-cement mass (w/c) ratio of 0.48. We consider two different morphologies of rubber particles, namely spheroid (S) and fiber-like (F) particles. Experimental characterization was pe...
Article
During the last few decades many researchers have been interested in acoustic wave propagation in artificial periodic composites known as sonic crystals. Sonic crystals have received renewed attention because they exhibit acoustic band gaps where there are only evanescent waves. Sonic crystals consist of a periodic array of scatterers embedded in a...
Article
The occurrence of dynamic transformation is investigated during the simulated hot rolling of an API‐X80 steel. Torsion tests are carried out under continuous cooling conditions, with all deformation passes applied above the equilibrium transformation temperature. Three different interpass times are investigated: 1, 8, and 20 s. Samples are water‐qu...
Poster
Full-text available
OVERVIEW The hot rolling of steel is normally carried out in the austenite phase field. Previous work has shown that rolling produces phase transformation of the austenite in the roll bite and that ferrite can be formed everywhere within the austenite phase field. This has been referred to as dynamic transformation (DT) and has been shown by severa...
Article
Full-text available
A five-pass torsion simulation of the roughing passes applied during hot plate rolling was performed in the single-phase austenite region of a Nb-microalloyed steel under continuous cooling conditions. The deformation temperatures were approximately half-way between the Ae3 and the delta ferrite formation temperature (i.e., 250 °C above the Ae3) in...
Article
Under loading above the Ae 3 temperature, austenite transforms displacively into Widmanstätten ferrite. Here the driving force for transformation is the net softening during the phase change while the obstacle consists of the free energy difference between austenite and ferrite as well as the work of shear accommodation and dilatation during the tr...
Article
The simulation of industrial rolling processes has been shown to be an important method to optimize rolling parameters, reduce production costs and improve product quality. Previous works have shown the value of hot rolling simulation by means of torsion tests where the mean-flow-stress (MFS) can be successfully predicted. In the present work, thre...
Article
When austenite is deformed within the austenite phase field, it partially transforms dynamically into ferrite. Here, plate rolling simulations were carried out on an X70 steel using rough rolling passes of 0.4 strain each. The influence of the number of roughing passes on the grain size and volume fraction of induced ferrite was determined. Up to t...
Thesis
Lorsque l'austénite est déformée dans le domaine de la phase austénitique, c'est-à-dire au-dessus de la température de transformation à l'équilibre Ae3, elle se transforme de manière dynamique en ferrite. Le comportement de la transformation dynamique (TD) dans les conditions de laminage a été étudié en détail dans un acier oléoduc X70 à haute rési...
Article
The primary objective of the present work is to evaluate the influence of various commercial gases on the microstructure of tubular AISI 304 austenitic stainless during welding. This was carried out using CO2, Ar, N2, Ar + 25%CO2 and Ar + 2%O2 gases, which are common inert gases or mixture specified in numerous technical standards associated with w...
Article
Full-text available
The double differentiation method overestimates the critical stress associated with the initiation of dynamic transformation (DT) because significant amounts of the dynamic phase must be present in order for its effect on the work hardening rate to be detectable. In this work, an alternative method (referred to here as the free energy method) is pr...
Article
When austenite is deformed within the austenite phase field, that is, above the equilibrium transformation temperature Ae3, it partially transforms dynamically into ferrite. Here, rough rolling simulations are conducted at 1100 °C on an X70 steel to study the influence of grain size and residual strain on this type of transformation. Three simulate...
Article
Dynamic transformation is shown to take place in steels and titanium alloys at temperatures above and below the beta transus, respectively. Here the hard phase transforms into a softer phase during deformation. This unusual metallurgical phenomenon has previously been explained in terms of transformation softening (Ghosh et al., 2016). In the prese...
Chapter
Torsion simulations of plate and strip rolling were carried out on a plain C–Mn and an X70 Nb steel over the temperature range 900–1000 °C. Pass strains of 0.4 were applied at a strain rate of 1 s⁻¹. Interpass times of 0.5, 1, 1.5, 3, 10, and 20 s were employed to determine the mean flow stresses (MFSs) applicable to plate and strip rolling. By mea...
Article
Full-text available
The main objective of this research is to better understand the correlation between the constituent phases presented in the super-duplex steel SAF 2507 when it is under welding process by arc shielding gas MIG-MAG (Metal Inert Gas-Metal Active Gas). Conventional short circuit transfer and derivative STT (SurfaceTension Transfer) using the 2594 weld...
Article
Full-text available
Plate rolling simulations were carried out on an X70 Nb steel by means of torsion testing. A seven-pass rolling schedule was employed over the finishing temperature range 950-860 °C with 15 degrees of cooling between passes. Interpass intervals of both 10 and 30 seconds were employed, which corresponded to cooling rates of 1.5 and 0.5 °C/s, respect...
Article
Full-text available
Plate rolling simulations were carried out on an X70 Nb and a low C steel by means of torsion testing. A seven-pass rolling schedule was employed where the last pass was always applied above the respective Ae3 temperature of the steel. Interpass intervals of 10 and 30s were employed, which corresponded to cooling rates of 1.5 and 0.5 C/s. The mean...
Article
The dynamic transformation (DT) of austenite to ferrite and the retransformation of the dynamically transformed ferrite back into the more stable austenite were studied at temperatures above the Ae3. For this purpose, compression tests were carried out on a C-Mn and a Nb microalloyed steel over the temperature range 870–960 °C. The samples were def...
Article
Full-text available
This study investigated the softening mechanisms of the AISI 410 martensitic stainless steel during torsion simulation under isothermal continuous in the temperature range of 900 to 1150 °C and strain rates of 0.1 to 5.0s-1. In the first part of the curves, before the peak, the results show that the critical (εc) and peak (εp) strains are elevated...
Chapter
The controlled rolling of pipeline steels involves pancaking the austenite and then subjecting it to accelerated cooling. However, the formation of ferrite during rolling decreases the amount of austenite available for microstructure control. Here the formation of ferrite during rolling is simulated using a five-pass rolling schedule applied by mea...
Article
Full-text available
The present work is based on a comparison between nitriding plasma technique described as CCPN (Cathodic Cage Plasma Nitriding) and the conventional DCPN (DirectCurrent Plasma Nitriding). Here the nitriding process applied on the AISI 316 stainless steel was investigated under the following conditions:constant pressure of 5mbar at temperatures of 4...
Article
Full-text available
Torsion simulations of plate rolling were carried out on an X70 steel at 900°C; pass strains of 0.4 and a strain rate of 1 s-1 were employed together with interpass times of 1.0 s, 10.0 s, 20.0 s and 30.0 s. The mean flow stresses (MFS`s) applicable to each pass were calculated by integration of the individual flow curves. These decreased with pass...