Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature such twins, which are formed due high strain rapid solidification inherent LPBF. Dynamic recrystallization (DRX) also activated LPBF, and induced by deformation nanotwins. A thermostatis...

In this work, the dissimilar joint of AA7003-T4 and 6060-T4 alloy has been produced by friction stir welding (FSW). The microstructure was examined by optical microscope (OM), electron back scattered diffraction (EBSD), transmission electron microscopy (TEM), and the mechanical properties of the joint were investigated. It is demonstrated that sound dissimilar joint can be produced through FSW....

Machine to technology has a broad application prospect in the 5G network, but there is bottleneck energy consumption of intelligent devices powered by battery. In this paper, we study energy-saving strategy millimeter-wave system. Firstly, Discontinuous Reception scheme based on Beam Measurement (BM-DRX) proposed avoid unnecessary beamforming. Secondly, modified frame structure and optimized be...

Abstract Hot deformation tests of 5CrNiMoV steel were performed at temperatures 700 to 870 °C and strain rates 0.001 0.1 s −1 using the DIL 805D thermomechanical simulator. The critical volume fraction models Dynamic Recrystallization (DRX) constructed based on work hardening theory. results showed that DRX decreases with increasing temperature decreasing rate, which implies occurs easily highe...

In this contribution, a series of isothermal compression tests for the 825 nickel-based alloy were performed using Gleeble-3800 computer-controlled thermomechanical simulator at temperature range 850 °C to 1150 and strain rate 0.14 s−1 2.72 s−1. The hot deformation equation is derived from piecewise model based on theory work hardening-dynamic recovery dynamic recrystallization (DRX), respectiv...

Hot deformation behavior and the microstructural evolution of Inconel 625 superalloy plates are investigated by hot compression tests in a range working temperatures (800–1050 °C) strain rates (0.001–1 s−1). The observation shows that strong <110> texture forms when processing temperature is below 950 °C, whose intensity decreases with increases temperature, it disappears compressing abov...

  Combined PET/CT scanners now play a major role in medicine for in vivo imaging in oncology, cardiology, neurology, and psychiatry. As the performance of a scanner depends not only on the scintillating material but also on the scanner design, with regards to the advent of newer scanners, there is a need to optimize acquisition protocols as well as to compare scanner ...

La modificación de los almidones por medios físicos o químicos se utiliza para mejorar las propiedades físico-químicas nativos. Los semilla aguacate fueron modificados mediante hidrólisis ácida (HA) con ácido clorhídrico (HCl 0,15 N) a altas temperaturas (70 y 80 °C, 30 min). El nivel evaluó bromatología, determinación del equivalente en dextrosa (SD), microscopía electrónica barrido (MEB), dif...