نتایج جستجو برای: drx

تعداد نتایج: 401  

Journal: :Intermetallics 2021

Dynamic recovery (DRV) and dynamic recrystallization (DRX) of hexagonal materials during hot deformation is a sub-domain restoration processes, which has not well been addressed. In this work, the DRV DRX mechanisms high-temperature ? phase in TiAl alloys were thoroughly investigated by microstructural characterization crystallographic analysis with an extended intragranular misorientation axis...

Journal: :Materials transactions 2022

This study is aimed to optimize the tensile properties and fracture toughness of rapidly solidified (RS) ribbon-consolidated Mg–0.85Zn–2.05Y–0.35Al (at%) alloys by changing pre-consolidation heat-treatment temperature. The prepared from RS ribbons heat-treated below 673 K consisting bimodal ?-Mg grains; coarse-worked grains (?2.8 µm) with high Kernel average misorientation (KAM) values (?1.8°),...

Journal: :Disciplinarum Scientia 2023

Os problemas ambientais das indústrias estão principalmente relacionados com a produção de elevadas vazões águas residuais carregadas compostos orgânicos recalcitrantes, não biodegradáveis. O aprofundamento no conhecimento novas tecnologias, como o foto-Fenton heterogêneo, e busca por novos materiais catalíticos são necessárias para se alcançar métodos tratamento mais eficientes. Nesse sentido,...

Journal: :IEEE Access 2022

The Dual connectivity (DC) technology is a robust solution for Internet service providers (ISP) to evolve their legacy infrastructures with less cost speed up the progress of fifth-generation (5G) services coverage. DC enables traditional network connect multiple New Radio (NR) Node B (gNBs). A well-known scheme non-standalone (NSA) NR. In this case, user equipment (UEs) could access via both e...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده مهندسی 1392

در تحقیق حاضر به مطالعه تاثیر عنصر نیوبیوم بر رفتار کارگرم فولاد زنگ نزن مارتنزیتی در بازه دمایی °c1200 - °c900 و نرخ کرنش های sec-1 1-sec-1 0.001پرداخته شد. بدین منظور از فولاد 403 و 403nb که به ترتیب به عنوان آلیاژ شاهد و آلیاژ نیوبیوم دار نام گذاری شد استفاده گردید. نتایج منحنی های تنش حقیقی-کرنش حقیقی و همچنین تصاویر ریزساختاری نشان می دهند که در تمام شرایط کارگرم فولاد شاهد و در بیشتر حالا...

Journal: :Science China. Materials 2023

The interfacial structures and behaviors are critical in determining the material properties. Our study aims to investigate such unique multiphase systems involving complex compositions. Herein, we report divergent of L12–L12, B2–B2, L12–B2 boundaries prepared via bonding AlCoCrFeNi2.1 eutectic high-entropy alloys (HEAs). Specifically, dynamic recrystallization (DRX) occurs L12–L12 boundary owi...

Journal: :Crystals 2023

Cobalt-based superalloys are common materials for the manufacturing of various components used in aerospace applications. Conventional cobalt-based with a unimodal grain structure generally exhibit low strength and ductility at high temperatures. A bimodal superalloy, Co–20Cr–15W–10Ni (CCWN), was designed to achieve both The deformation behavior tensile properties CCWN alloy fine-grain (FG), co...

2012
Jenny Barbier Klaus Gerth Rolf Jansen Andreas Kirschning

H and C NMR spectra were recorded with Bruker DPX-400, AVANCE-400 and DRX-500. The numbering of the protons relate to the numbering chosen in Fig. 1. High resolution mass spectra were obtained with a Micromass LCT via loop-mode injection from a Waters (Alliance 2695) HPLC system. Alternatively a Micromass Q-TOF in combination with a Waters Aquity Ultraperformance LC system was employed. Ionizat...

2017
Jeng-Yueng Chen

Abstract—In this paper, the design of integrated sleep scheduling for relay nodes and user equipments under a Donor eNB (DeNB) in the mode of Time Division Duplex (TDD) in LTE-A is presented. The idea of virtual time is proposed to deal with the discontinuous pattern of the available radio resource in TDD, and based on the estimation of the traffic load, three power saving schemes in the top-do...

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