نتایج جستجو برای: multiphase steel

تعداد نتایج: 88074  

The present study, describes the structural, electrical, and the photocatalytic activity of sol-gel synthesized TiO2- ZnO nanostructure. The synthesized mixed oxide nanostructure is characterized by XRD, FTIR, Raman, UV-Vis, FESEM, DLS and Impedance Spectroscopy analyses. In addition, photocatalytic activity of multiphase TiO2 (TAB)-ZnO (ZW) nanostructure is analysed using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده مهندسی عمران 1390

حالت های مختلف آلیاژ حافظه دار شکلی در یک مهاربند پیشنهادی به منظور به دست آوردن رفتار بهینه استفاده شده اند. مهاربند پیشنهادی قابلیت استهلاک انرژی بالا در عین حال رفتار بازگردانندگی دارد. در این تحقیق ابتدا مقایسه بین قاب با مهاربندهای sma و قاب با مهاربندهای steel شده است، در نهایت جهت بدست آوردن حالت بهینه از ترکیب دو حالت بالا استفاده شده است که این امر سبب کسب خواص برتر هردو نوع مهاربند در...

Journal: :Letters on Materials 2022

The structure and properties of a high-entropy alloy (HEA) subjected to saturation with boron atoms by combined electron-ion-plasma method are characterized. On HEA film 5 ?m thickness deposited on AISI 304 steel, (boron + chromium) 1 was then the system “(Cr B) / (HEA steel) substrate” irradiated pulsed electron beam. It is shown that wear resistance resulting more than 30 times higher origina...

Journal: :Journal of materials research and technology 2022

The overwhelming impact of complex-phase microstructures to mechanical response in multiphase steels requires accurate constitutive properties the individual phases. However, precise prediction phase their is critical and sophisticated, commonly multiscale characterizations numerous approximations. In this work, by employing full information semi-empirical analytical models, we accurately predi...

2008
YUJIE WANG XIN LIU JIN WANG KAMEL FEZZAA DAVID L. S. HUNG JAMES R. WINKELMAN

High-speed liquid jets and sprays are complex multiphase flow phenomena with many important industrial applications. Great efforts have been devoted to understand their dynamics since the pioneering work of Rayleigh on low-speed jets. Attempts to use conventional laser optical techniques to provide information about the internal structure of high-speed jets have been unsuccessful owing to the m...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2006
amir abbas izadpanah mohsen vafaie sefti farshad varaminian

the michelsen stability and multiphase flash calculation by direct minimization of gibbs free energy of the system at constant temperature and pressure, was used for systems containing gas hydrates. the solid hydrate phase was treated as a solid solution. the fugacities of all components of the hydrate phase were calculated as a function of compositions by the rearranged model of van der waals ...

2011
Timothy M. Burks Trevor N. Mudge

This paper describes a general framework for the retiming of sequential circuits using either single or multi-phase clocks and both edge-ttiggered flip-flops and level-sensitive latches. This framework is compared with previously published work on retiming. The potential for finding optimal retimings within this framework is discussed, and a set of heuristic retim­ ing methods is presented. Fin...

2010
C. Govindaraju K. Baskaran

This paper proposes a hybrid carrier based space vector modulation suitable for multiphase multilevel inverters. Multiphase multilevel inverters are controlled by this hybrid modulation to provide multiphase variable voltage and variable frequency supply. The proposed modulation inherits the features of fundamental frequency modulation and carrier based space vector modulation strategies. The m...

2007
Robert Nourgaliev Dana Knoll Vincent Mousseau Ray Berry

The state-of-the-art for Direct Numerical Simulation (DNS) of boiling multiphase flows is reviewed, focussing on potential of available computational techniques, the level of current success for their applications to model several basic flow regimes (film, pool-nucleate and wall-nucleate boiling – FB, PNB and WNB, respectively). Then, we discuss multiphysics and multiscale nature of practical b...

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