Se evaluó el desempeño de la influencia ceniza bagazo caña (CBC) como filler en mezclas concreto autocompactante (CAC), adicionado un 0%, 5%, 10%, 15%, 20% y 25% con respecto al peso cemento. La caracterización se realizó mediante FTIR, FRX DRX. Las propiedades trabajabilidad del CAC fueron determinadas ensayos flujo asentamiento, anillo J, caja L, embudo V, Índice Estabilidad Visual resistenci...

En el presente trabajo se realiza la síntesis de apatitas, a través del método hidrotermal asistido por microondas, variando pH en 5, 6, 7, 8, 9 y 10. La caracterización fisicoquímica estructural realizó las técnicas: MEB-EDS, DRX FTIR, determinando una tamaño cristal 8 10 nm función pH; observó formación aglomerados longitud, constituidos fibras entre 43.4 108.5 diámetro 412.4 1603.8 así mismo...

El presente trabajo de investigación expone la obtención alúmina alfa (α-Al2O3) utilizando escoria aluminio, un desecho tóxico industrial. proceso consiste una etapa lixiviación aluminio con solución 0.5M NaOH, seguido precipitación HCl para, finalmente, calcinar el sólido recuperado a temperatura 1200ºC, durante tiempo 72 horas. Del producto obtenido se presentan las fases existentes por medio...

In order to improve the effect of higher English teaching, this paper builds a education system based on Internet Things technology. The optimization aim study is provide an online DRX parameter technique that compatible with RRC protocol architecture. This work employs algorithms reinforcement learning accomplish and dynamic control by selecting optimal parameters dynamically configuring them ...

in this work dynamic recrystallization behavior of aisi 403 martensitic stainless steel was studied using hot compression tests over temperature range of 900 c -1200 c and strain rate range of 0.001 s-1 - 1 s-1. the obtained flow curves showed that the hot compression behavior of the alloy is controlled by dynamic recrystallization. the flow stress and strain corresponding to the critical, pe...

7000 series aluminum alloys are widely used in the automotive industries for structural lightweight components due to their exceptional high strength to weight ratio. however, this class of aluminum alloy is difficult to join by conventional fusion welding techniques so friction stir welding (fsw) widely is used for welding this alloys. the process has been demonstrated to be effective and is c...

Abstract The present work aims at investigating the impact of homogenization time on microstructure and mechanical properties a Ni-based superalloy GH4151 during hot deformation. results showed that dense dendrite structure remained after 1200°C for 5 h, which was similar to as-cast microstructure. Higher flow stress cracking in h-homogenized material is attributed integral deformation with gre...

To investigate the thermal deformation behavior of Ti–10V–2Cr–3Al titanium alloy, hot compression experiments were carried out via a strain rate 0.1–0.001 s−1 and temperature 730~880 °C. The results showed that rheological stress decreases when increases or decreases. Due to conditions, some flow curves exhibited significant discontinuous yielding softening. Flow softening in α+β phase region w...