نتایج جستجو برای: منیزیم az31b

تعداد نتایج: 4084  

Journal: :journal of mechanical research and application 2012
e. kalateh mollaei h. jahed

with the expanding demand on application of magnesium alloys in automotive and aerospace industries, robust methods in fatigue characterization of commercially available magnesium alloys with high specific strength is anticipated. in this paper, rotating bending load controlled tests has been studied on specimens machined from an extrusion piece of az31b. due to asymmetric and anisotropic behav...

Journal: :Wear 2022

This paper experimentally investigated the effects of silicone oil on tribological behaviour AZ31B/86CrMoV7 contact pair under a pin-on-disk configuration. A commercial was used as an oxidation inhibiter for AZ31B at elevated temperatures to 300 °C. The wear mechanism explored by SEM morphologies worn surfaces. analysis revealed that can effectively minimize surface oxidation. Compared with dry...

Journal: :Cirp Journal of Manufacturing Science and Technology 2021

Dissimilar material joining between magnesium (AZ31B) alloy and dual-phase steel (DP600) was achieved using the friction stir welding (FSW) process. The present work aimed at studying effect of tool rotational speed on microstructure mechanical properties dissimilar joints. joints were fabricated speeds 800 1600 rpm with weld 50, 100, 150 mm/min, respectively. plunge depth 0.2 mm tilt angle 2° ...

2009
R. S. Coelho A. Kostka H. Pinto A. Rothkirch J. Dos Santos

The microstructure and residual stresses of an AA6040 Al to AZ31B Mg friction stir weld are studied using scanning electron microscopy and X-ray diffraction. The complex material flow promoted by the friction stir welding process results in a fine grained structure in the stir zone of both materials due to dynamic/recovery recrystallization. The interface between the materials is characterized ...

In this study, ceramic coatings were prepared on AZ31B Mg alloy by plasma electrolytic oxidation technique in electrolytes containing sodium fluoride (KF), sodium silicate (Na2SiO3.5H2O) and different potassium hydroxide (KOH) concentrations. The electrochemical behavior of AZ31B alloy and plasma electrolytic oxidation coatings was studied by potentiodynamic polarization, electrochemical impeda...

2013
J. C. Outeiro F. Rossi G. Fromentin G. Poulachon G. Germain A. C. Batista

The corrosion resistance of magnesium alloys depends mainly on its surface integrity. Previous experimental studies have shown that machining can induces small (nano-scale) grain size, compressive residual stresses and basal plane crystallographic texture, which significantly improve the corrosion resistance of magnesium alloy. These studies have focused on the positive effects of cryogenic coo...

با توسعه کاربرد قطعات منیزیمی در صنایع مختلف، ضرورت ایجاد لایه محافظ در برابر خوردگی و سایش روی این قطعات بیشتر احساس می‎شود. در این پژوهش پوشش کامپوزیتی Al-SiC با استفاده از فرایند پاشش سرد روی بستر آلیاژ منیزیم AZ31B ایجاد شد. برای این منظور پودر آلومینیم خالص و پودرهای کامپوزیتی با درصد وزنی 25، 50 و 75 از ذرات تقویت کننده SiC آماده‎سازی شد. پوشش‌دهی با استفاده از گاز نیتروژن در دمای 300ºC، ...

Journal: :Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2013
Jun-Ho Park Tae-Hong Ahn Hyun-Sik Choi Jung-Man Chung Dong-Ik Kim Kyu Hwan Oh Heung Nam Han

Cast AZ31B-H24 magnesium alloy, comprising Mg with 3.27 wt% Al and 0.96 wt% Zn, was cold rolled and subsequently annealed. Global texture evolutions in the specimens were observed by X-ray diffractometry after the thermomechanical processing. Image-based microstructure and texture for the deformed, recrystallized, and grown grains were observed by electron backscattered diffractometry. Recrysta...

ژورنال: نانو مواد 2019

در این تحقیق اثر زمان پوشش‌دهی بر ریزساختار، سختی، مقاومت به سایش و خوردگی پوشش نانوکامپوزیتی سرامیک–گرافن اعمال شده به روش اکسیداسیون پلاسمایی الکترولیتی روی آلیاژ منیزیم AZ31B بررسی گردید. برای این منظور، پوشش‌های سرامیک-گرافن از الکترولیت فسفاتی حاوی نانوذرات گرافن در جریان mA/cm2 60 و زمان‌های 5، 10، 15 و 20 دقیقه آمده شدند. مورفولوژی و ترکیب شیمیایی پوشش توسط میکروسکوپ الکترونی ...

Journal: :international journal of advanced design and manufacturing technology 0
mohamad ali khayamian iran university of science and technology hamid jahed university of waterloo

the global environmental concerns have put the light weighting of structures on the fore front of the research in transportation industry. among other light weight alloys, the transportation industry is considering magnesium intensive light body-in-white structure in automotive applications. although the research in modeling technique areas is very active, a suitable practical model mimicking t...

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