Effect of power ultrasound on solidification of aluminum A356 alloy

2005 ◽  
Vol 59 (2-3) ◽  
pp. 190-193 ◽  
Author(s):  
X. Jian ◽  
H. Xu ◽  
T.T. Meek ◽  
Q. Han

Aluminum composites are in reality notably used as a piece of various programs due to their tremendous load to quality homes. Many studies works had been finished to ponder and improve the mechanical houses of aluminum mixes. The formation of alloying segments anticipate a fundamental component in choosing the properties of a mix. The eventual results of numerical systems have been recognized via and massive as they eagerly facilitate with the check comes to fruition. In the present evaluation a numerical examination contraption i.E., restrained section examination (FEA) is used. The paintings presented in this paper is away for the examination of effect of vibration traits of aluminum blends of various sport plans. The displaying and evaluation is finished the usage of ANSYS programming. A secluded assessment is carried out to recognize the vibration direct i.E., trademark repeat and mode shapes, of the cloth considered. The mode shapes and fashionable Recurrence receive a essential part within the framework Of dynamic machines. The consonant evaluation has been made to choose repeat traits. The examination software scrutinizes the information from the records archive shapes the information and makes the yield document containing the nodal migrations and nodal stretch estimations of various nerves. From the examination it's miles assumed that as the copper and silicon content material within the amalgams grows winding decreases then again. ANSYS comes about insist the smallest Modulus twisting and a definitive tractable strengthincaseofthe380 mixes of 380 additions with the extension in copper and silicon content. Subsequently Al 380 amalgams show high-quality fine with least vibration.


2004 ◽  
Vol 58 (29) ◽  
pp. 3669-3673 ◽  
Author(s):  
Hanbing Xu ◽  
Xiaogang Jian ◽  
Thomas T. Meek ◽  
Qingyou Han

2019 ◽  
Vol 285 ◽  
pp. 290-295
Author(s):  
Nora Nafari ◽  
Farnoush Yekani ◽  
Hossein Aashuri

A three phase electromagnetic stirrer was used to agitate aluminum A356 slurry and a dry and oxygen free argon gas was introduced in to the slurry by a porous graphite core at a same time. The prepared semi-solid slurry was then transferred into a metallic mold and was compacted by a drop weight. Results demonstrated a favorable increase in shape factor, decrease in aspect ratio and average diameter size at different intensities of stirring. The intensity of stirring was changed by altering the current passed through the magnetic coil and also bubbling intensity via the porous graphite diffuser. Different time intervals for electromagnetic stirring and gas induction were applied. Agitating the slurry for 90 Sec. separately by electromagnetic stirrer and GISS method, gave better results in terms of shape factor, decrease in average diameter of the globules and aspect ratio.


2008 ◽  
Vol 141-143 ◽  
pp. 605-610 ◽  
Author(s):  
A. Foroughi ◽  
Hossein Aashuri ◽  
A. Narimannezhad ◽  
Ali Khosravani ◽  
M. Kiani

Computer base and simulation technique have been applied for modeling the semi-solid die filling and part of the solidification process of aluminum A356 alloy. A fairly simple one-phase rheological model has been implemented into a fluid flow finite element software Procast, to solve the partial differential equations. This model is purely viscous nature and is implemented in the power law cut-off model of Procast. The constitutive parameters of this model were determined for a rheocast A356 alloy. Using these parameters and comparing the simulation results with experimental data showed good correlation with the model prediction. The designed die for rheocasting was applied for the production of a small propeller with thin section.


2022 ◽  
Vol 327 ◽  
pp. 300-305
Author(s):  
Gerardo Sanjuan-Sanjuan ◽  
Ángel Enrique Chavez-Castellanos

The present investigation attempted to explore the effect of stirring during solidification of Aluminum A356 alloy, mainly focusing on the change from dendrite to globular structure. For this purpose samples of A356 alloy were melted in the electrical resistance furnace and cooling curves were recorded for each level agitation. The experimental curves were numerically processed by calculating first and second derivatives. From these were determined temperatures and times of start nucleation of alpha solid and eutectic reaction.


2008 ◽  
Vol 466 (1-2) ◽  
pp. 67-72 ◽  
Author(s):  
S. Ashouri ◽  
M. Nili-Ahmadabadi ◽  
M. Moradi ◽  
M. Iranpour

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