Centro Universitario FEI: Recent submissions
Now showing items 921-940 of 2182
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Kinetics of sigma phase formation in a duplex stainless steel
(2009)This work determines the kinetics of sigma phase formation in UNS S31803 Duplex Stainless Steel (DSS), describing the phase transformations that occur in isothermal aging between 700 and 900 °C for time periods up to 1032 ... -
Selective corrosion of 550°C aged Cu10Ni-3Al-1.3Fe alloy in NaCl aqueous solution
(2011)This work studied the electrochemical behavior of a solution treated or 550°C aged Cu10Ni-3Al-1.3Fe alloy, in 0.01M NaCl aqueous solution, through potentiodynamic polarization in both stagnant condition or under erosion ... -
Influence of the microstructure on the degree of sensitization of a duplex stainless steel UNS S31803 aged at 650°C
(2013)This work evaluates the phase transformations during aging of an UNS S31803 DSS at 650°C and its influence on the DOS. The material was solution treated at 1175°C and then aged at 650°C for times up to 360 h. SEM-BSC images ... -
Effect of rolling on the residual stresses and magnetic properties of a 0.5% Si electrical steel
(2008)Cold-rolled (0-19% of reduction) 0.5% Si electrical steel sheets were studied in detail, including macro and micro residual stress measurements, crystallographic texture, dc-hysteresis curves and iron losses. Even for the ... -
Investigation on the effect of a compatibilizer on the fatigue behavior of PP/coir fiber composites
(2011)The mechanical behavior of polypropylene (PP) and 30 wt% coir fiber reinforced PP composites, with and without compatibilizer, were assessed through monotonic (tensile and bending) and cyclic (fatigue) tests. Fatigue load ... -
Sensitization and pitting corrosion resistance of ferritic stainless steel aged at 800°C
(2006)This work investigates the influence of sensitization conditions on pitting corrosion resistance of ferritic stainless steel UNS S43000 aged at 800°C between 10 min and 320 min. UNS S43000 steel is susceptible to intergranular ... -
Study of "napier grass" delignification for production of cellulosic derivatives
(2013)Recently, much research on the evaluation of new cellulose sources has been developed. In this context, a promising source is "napier grass", which contains 30.40% lignin, 36.34% cellulose, and 34.12% hemicellulose. In ... -
Intermetallic phases formation during short aging between 850 °c and 950 °c of a superduplex stainless steel
(2012)This paper is based on the study of intermetallic phase formation during aging between 850 C and 950 C, for periods up to 5 min; those treatments were conducted in liquid aluminum bath, allowing fast heating of the small ... -
Selective corrosion in sodium chloride aqueous solution of cupronickel alloys with aluminum and iron additions
(2007)Cupronickel pipes are widely used in cooling systems. Under this application, localized corrosion is observed, particularly associated with selective corrosion of nickel (denickelification). This work studied the ... -
Toughness of Two HSLA Steel Sheets
(2003)This paper presents a study concerning the toughness anisotropic behavior of two high-strength low-alloy steel sheets having ferrite-martensite (dual-phase) and ferrite-perlite grain-refined structures. The anisotropic ... -
Sigma phase formation and polarization response of UNS S31803 in sulfuric acid
(2005)For a better understanding of the relationship between the microstructure of UNS S31803 duplex stainless steel (DSS) and the shape of the polarization curves, this study evaluated the influence of the microstructure on the ... -
Pit morphology and its relation to microstructure of 850°C aged duplex stainless steel
(2005)The relation between pit morphology and microstructure formed during 850°C isothermal aging of UNS S31803 duplex stainless steel (DSS) could be reached through the explanation of pit nucleation and growth during potentiodynamic ... -
Nanocomposites of PLA containing ZnO nanofibers made by solvent cast 3D printing: Production and characterization
(2019)© 2019 Elsevier LtdPLA nanocomposites containing 1 wt% ZnO nanofibers have been prepared by solvent-cast 3D printing. The ZnO nanofibers were produced by electrospinning and dispersed in PLA by ultrasound. Scanning electron ...