magnesium alloy ultrasonic vibration

Effects of ultrasonic dispersion on structure of

substrate on magnesium alloy, then nickel was plated on magnesium alloy using Watt bath under ultrasonic. The effect of ultrasonic on the structure of electrodeposited coating was analyzed. 2 Experimental 2.1 Sample AZ91D magnesium alloy specimens with dimensions of 20 mm×10 mm×2 mm were used as substrate in the experiment.

An approach to assessing ultrasonic …

Abstract. Few experimental data are available on ultrasonic attenuation in molten light alloys due to lack of means of characterization. An approach has been proposed and demonstrated to assessing ultrasonic attenuation in molten magnesium alloys based on the finding that the grain density in ultrasonied magnesium alloy samples depends linearly on ultrasonic amplitude along the …

Effect of Ultrasonic Treatment on the …

Compared to the sample without ultrasonic treatment,it was found that,for AZ31 magnesium melt alloy treated by ultrasonic,the refined grain size and the inproved distribution of grain with its shape of oval-shaped or spherical can be obtained,and the precipitation inside Al matrix was inhibited The Mg17Al12 precipitates distributed mainly along the grain boundary and hardness was improved

The Effect of Ultrasonic Vibration on Soldering …

The Effect of Ultrasonic Vibration on Soldering Al-Mg Alloy soldering during isothermally holding causes the grain boundary segregation of magnesium which results from the base metal dissolution into the filler metal, and leads to decreasing the tensile strength of the joints.

Ultrasound-Assisted Transient Liquid Phase Bonding of

Magnesium alloy Bonding Ultrasound Oxide film Microstructure abstract The microstructure evolution and oxide film behavior in ultrasound-assisted transient liquid phase (U-TLP) bonding of Mg alloy were investigated by applying different ultrasonic time at 460 C with brass interlayer in air.

Ultrasonic welding of dissimilar materials: A review

ultrasonic welding technique and its appliion. Main advantages of this technique are, clean and undamaged exterior parts of weld, power savings, stable and strong bond, time efficiency Keywords: ultrasonic welding (USW), dissimilar materials 1. Introduction Ultrasonic welding is a joining process where high frequency vibrations

Granular medium forming technology of …

The results show that the ultrasonic vibration can reduce the forming force, keep the uniformity of the thickness, and improve the forming limit of the sheet metal, and when the blank-holder gap is 1.25 times of sheet thickness, the magnesium alloy sheet has a higher limit drawing ratio (LDR).

CiteSeerX — Effect of Ultrasonic Vibration on …

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract. Ultrasonic vibration was applied to the surface of AZ91D/CNF slurries in order to homogeneously disperse the reinforcement through the semi-solid matrix, and eliminate the clusters of nano-fibres originated during previous processes. The method utilized to produce the slurry was a modified compocasting

Potency of high-intensity ultrasonic treatment for grain

Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys A. Ramirez,a Ma Qian,a,* B. Davis,b T. Wilksc and D.H. StJohnd aDepartment of Mechanical and Design Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK bMagnesium Elektron North America, P.O. Box 258, Madison, IL 62060, USA cMagnesium Elektron, P.O. Box 23, Swinton, Manchester M27 8DD, UK

Nearâ threshold fatigue crack growth properties of wrought

The ultrasonic fatigue testing method was used to per-form the tests because of its high testing frequency, which allows measurements of possible mean crack growth rates that are far below one atomic distance per cycle. 2 | MATERIAL AND METHOD 2.1 | Material Testing material was the high‐purity wrought magnesium alloy AZ61.

Ultrasonic Grain Refinement of Magnesium and Its Alloys

4. Ultrasonic grain refinement of pure magnesium The presence of an alloying element in molten Mg may alter the liquid property, for instance, its surface tension or viscosity. Accordingly, this may affect its response to ultrasonic irradiation. It is thus necessary to establish the effectiveness of ultrasonic

Microstructure character of AZ80 magnesium alloy ingots

intensity ultrasonic vibration into the melt has the effect on the suppression of undesirable dendritic zone and refines the Abstract: Microstructure evolutions of an AZ80 magnesium alloy ingot with 300 mm in diameter cast with and without the electromagnetic vibration was investigated. The microstructures of the ingot cast with the conventional

Flexible die drawing of magnesium alloy sheet …

To reveal the effect of ultrasonic vibration on flexible-die deep drawing, an ultrasonic vibration with a frequency of 20 kHz and a maximum output of 1.5 kW was on the solid granule medium deep drawing of AZ31B magnesium alloy sheet.

Effects of Ultrasonic Treatment and …

(2020). Effects of Ultrasonic Treatment and Nanoparticles Addition on Microstructure and Mechanical Properties of AS41A Magnesium Alloy. Integrated Ferroelectrics: Vol. 210, Proceedings of the Eighteenth China International Nanoscience and Techology Symposium (CINSTS19), Part V …

Degassing of Aluminum A356 Alloy Using …

In order to investigate the effects of ultrasonic vibration on degassing of aluminum alloys, three experimental systems have been designed and built: one for ultrasonic degassing in open air, one for ultrasonic degassing under reduced pressure, and one for ultrasonic degassing with a purging gas. Experiments were first carried out in air to test degassing using ultrasonic vibration alone.

Effects of ultrasonic vibration on performance …

Abstract: Ultrasonic vibration can reduce the forming force, decrease the friction in the metal forming process and improve the surface quality of the workpiece effectively. Tensile tests of AZ31 magnesium alloy were carried out. The stress–strain relationship, fracture modes of tensile specimens, microstructure and microhardness under different vibration conditions were analyzed, in order

ULTRASONIC FATIGUE TEST OF AZ91 …

MACHINES, TECHNOLOGIES, MATERIALS. ISSN 1313-0226. ISSUE 11/2013 ULTRASONIC FATIGUE TEST OF AZ91 MAGNESIUM ALLOY D. Dimitrov PhD. 1, V. Shtarbakov PhD. 2 Technical University-Varna, Bulgaria, 9000 Varna, 1 Studentska str.1 Metal PLC-Varna, Western Industrial Zone 2 Abstract: In this article questions about fatigue endurance limit of Az91 Mg-alloy was discussed.

Soldering of Al-Mg Alloy with the Aid of …

It is said that the aluminum alloys with the content of magnesium more than approximately 0.5 mass% is difficult to be brazed and soldered. In this study, we attempted to solder the aluminum alloys, such as A5052 and A5056, which contain magnesium more than 2.5 mass% with the aid of ultrasonic vibration.

Enhanced corrosion behavior and mechanical …

In this study, ultrasonic‐assisted friction stir processing (UaFSP) and friction stir processing (FSP) were conducted on AZ91 magnesium alloy sheets, and their microstructure, corrosion behavior, and mechanical properties were comparatively investigated.

Effect of high-intensity ultrasonic field on process of

effects of ultrasonic vibration on the microstructures and mechanical properties of direct chilling (DC) cast magnesium alloy AZ80, which is a commercially available wrought magnesium alloy. 2 Experimental The composition of AZ80 magnesium alloy is shown in Table 1. The melting of AZ80 magnesium alloy

Development of Non-Dendritic Microstructure …

The effect of processing parameters on the semi-solid microstructure has been investigated in the course of semi-solid slurry preparation of A356 Al alloy by ultrasonic vibration method. The A356 melt in temperature of 630 660°C was poured into a special metal cup, and exposed to ultrasonic vibration at 20 kHz or isothermal holding for a certain time after vibration.

Ultrasonic welding of AZ31B magnesium alloy …

This article overviews the ultrasonic welding process, a solid-state joining method, using the example of welding of a magnesium alloy as well as the joining of magnesium alloys in general. In situ high-speed imaging and infrared thermography were utilized to study interfacial relative motion and heat generation during ultrasonic spot welding of AZ31B magnesium (Mg) alloys.

Microstructures and mechanical properties of …

Microstructures and mechanical properties of AZ80 alloy treated by pulsed ultrasonic vibration . . : Pulsed ultrasonic field was employed in the melt of the AZ80 magnesium alloy.

Magnesium Alloy Plate Board for Vibration …

Magnesium Alloy Plate Board for Vibration Testing Equipment Platform(id:9842307). View product details of Magnesium Alloy Plate Board for Vibration Testing Equipment Platform from Luoyang Magnesium Gurnee Metal Material Co. Ltd. manufacturer in EC21

Microstructures of Mg–Al binary magnesium …

(2009). Microstructures of Mg–Al binary magnesium alloy solidified with ultrasonic treatment. Materials Science and Technology: Vol. 25, No. 7, pp. 931-934.

"The Effect of Ultrasonic Vibration on the …

Ultrasonic grain refinement and secondary phases modifiion to magnesium AM60B alloy have been examined. With ultrasonic vibration, alloy experienced a reduction in size of primary α-Mg grains from 760 µm to about 25~48 µm in diameter, which is much …

NT PN NTNATNAL N MAN, TNLО, MATAL 2013 N 13103946

strength of the alloy [10]. 5.Conclusions . Based on the ultrasonic fatigue test at frequency 20KHz in “pushpull” mode with symmetrical cycle loading (R=- -1), of the fatigue life of the studied magnesium alloy AZ91 in the 5- range 10 108 cycles, following main conclusion can be mentioned: - the mechanism of fatigue damage and the nature of