Effect of Vertical Electromagnetic Stirring on the Grain Refinement of A356 Aluminum Alloy Inoculated by Al-5Ti-B

2006 ◽  
pp. 344-349
Author(s):  
Zhao Yang ◽  
J.W. Bae ◽  
C.G. Kang
Keyword(s):  
Aluminum Alloy ◽  
Grain Refinement ◽  
Electromagnetic Stirring ◽  
A356 Aluminum Alloy ◽  
A356 Aluminum

The Research on the Annulus Electromagnetic Stirring for Preparing the Semisolid A356 Aluminum Alloy Slurry

2014 ◽  
Vol 217-218 ◽  
pp. 241-246
Author(s):  
Yue Long Bai ◽  
Jun Xu ◽  
Zhi Feng Zhang
Keyword(s):  
Aluminum Alloy ◽  
Electromagnetic Stirring ◽  
A356 Aluminum Alloy ◽  
Primary Particles ◽  
A356 Aluminum ◽  
Semi Solid ◽  
Gap Width

The effects of annulus gap width, stirring power and stirring frequency on the microstructure of the semi-solid A356 aluminum alloy slurry have been investigated by the annulus electromagnetic stirring (AEMS) technology The results show that narrow annulus gap , strong stirring power and high stirring frequency are advantageous to obtain the small spherical primarymicrostructure, the smaller the annulus gap width is, the bigger the stirring power is, and the higher the stirring frequency is, the more uniform, the smaller and the more spherical the microstructure is. So the high stirring frequency, narrow annulus gap, strong stirring power are beneficial to obtain the fine and spherical semisolid microstructure in AEMS. Also the results indicate that the primary particles are globular, small and distribute homogeneously in the AEMS.

scholarly journals Grain refinement of ASTM A356 aluminum alloy using sloping plate process through gravity die casting

2016 ◽  
Vol 55 (3) ◽  
pp. 2431-2438 ◽  
Author(s):  
Adnan Mehmood ◽  
Masood Shah ◽  
Nadeem Ahmed Sheikh ◽  
Junaid Ahmad Qayyum ◽  
Shahab Khushnood
Keyword(s):  
Aluminum Alloy ◽  
Grain Refinement ◽  
Die Casting ◽  
A356 Aluminum Alloy ◽  
A356 Aluminum ◽  
Sloping Plate

Effect of Vertical Electromagnetic Stirring on the Grain Refinement of A356 Aluminum Alloy Inoculated by Al-5Ti-B

2006 ◽  
Vol 116-117 ◽  
pp. 344-349 ◽  
Author(s):  
Zhao Yang ◽  
J.W. Bae ◽  
C.G. Kang
Keyword(s):  
Grain Size ◽  
Grain Refinement ◽  
A356 Alloy ◽  
Electromagnetic Stirring ◽  
A356 Aluminum Alloy ◽  
X Ray ◽  
Stirring Time ◽  
A356 Aluminum ◽  
Tib2 Particles ◽  
Aluminum Phase

In this paper, the influence of electromagnetic stirring on the grain size of A356 alloy inoculated by Al-5Ti-B was investigated. It is found that when stirring is applied at the same time with Al-5Ti-B, the inoculation effect will be disabled. X-ray determination and SEM observation show that stirring hinders the deposition of TiB2 particles; consequently hinder the formation of TiAl3 particles, which were proved to be the nucleus of primary α aluminum phase. If the stirring time is short, the grain size will be abnormally coarse. This experiment also confirms that the grain refinement of rheocasting is caused by dendrite fracture instead of modified nucleation.

Fabrication of Rheological Material of A356 Aluminum Alloy by Electromagnetic Stirring through Vacuum Pump

2008 ◽  
Vol 141-143 ◽  
pp. 731-736
Author(s):  
H.H. Kim ◽  
S.M. Lee ◽  
C.G. Kang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Atmospheric Pressure ◽  
Vacuum Pump ◽  
Electromagnetic Stirring ◽  
Vacuum Pressure ◽  
A356 Aluminum Alloy ◽  
Forging Process ◽  
A356 Aluminum

This study demonstrates fabricating rheological material by EMS system attached vacuum pump, in order to improve mechanical properties of rheoforged products by removing defects such as porosity and oxides arising from rheological forging process. The billet fabricated by EMS in vacuum pressure reduced formation of oxides and porosities of the inner material. The billet fabricated by EMS in vacuum pressure below 56 cm/Hg remarkably reduced porosities, comparing to the EMS in atmospheric pressure.

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