Influence of temperature conditions on grain refinement of pure Cu solidified with low-voltage pulsed magnetic field

2016 ◽  
Vol 30 (1) ◽  
pp. 1-5 ◽  
Author(s):  
X. H. Feng ◽  
Y. J. Li ◽  
T. J. Luo ◽  
L. H. Li ◽  
Y. Wu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Grain Refinement ◽  
Low Voltage ◽  
Pulsed Magnetic Field ◽  
Influence Of Temperature ◽  
Temperature Conditions ◽  
Pure Cu

Grain Refinement and Nuclei Formation Mechanism of Ni-Based Superalloy K417 with Low Voltage Pulsed Magnetic Casting

2010 ◽  
Vol 654-656 ◽  
pp. 428-431
Author(s):  
Yuan Sheng Yang ◽  
Xiao Ping Ma ◽  
Ying Ju Li
Keyword(s):  
Magnetic Field ◽  
Cooling Rate ◽  
Grain Refinement ◽  
Formation Mechanism ◽  
Low Voltage ◽  
Experimental Results ◽  
Pulsed Magnetic Field ◽  
Melt Flow ◽  
Refinement Mechanism ◽  
Refinement Effect

Low Voltage Pulsed Magnetic Casting (LVPMC) is developed for grain refinement castings in recent years. This paper investigates the grain refinement effect of LVPMC on superalloy K417 and deals with the effects of cooling rate and superheating on grain refinement, as well as grain refinement mechanism. The experimental results show that the grains in the alloy are equiaxed and refined to 60 m averagely. The melt flow and Joule heat during solidification are modeled and simulated to reveals the grain refinement mechanism. It is considered that the melt vibration and convection caused by the pulsed magnetic field, as well as cooling rate and superheating contribute to the refinement of solidified grains.

Grain refinement of as cast superalloy K4169 solidified with low voltage pulsed magnetic field

2014 ◽  
Vol 18 (sup4) ◽  
pp. S4-352-S4-356 ◽  
Author(s):  
Y. F. Teng ◽  
X. H. Feng ◽  
Y. J. Li ◽  
Y. S. Yang
Keyword(s):  
Magnetic Field ◽  
Grain Refinement ◽  
Low Voltage ◽  
Pulsed Magnetic Field ◽  
Cast Superalloy

Grain refinement of pure aluminum by direct current pulsed magnetic field and inoculation

2014 ◽  
Vol 24 (5) ◽  
pp. 1295-1300 ◽  
Author(s):  
Hang CHEN ◽  
Jin-chuan JIE ◽  
Ying FU ◽  
Hong-jun MA ◽  
Ting-ju LI
Keyword(s):  
Magnetic Field ◽  
Grain Refinement ◽  
Direct Current ◽  
Pure Aluminum ◽  
Pulsed Magnetic Field

Effect of Low-Voltage Pulsed Magnetic Field on Solidified Structure of Superalloy K4169

2013 ◽  
Vol 423-426 ◽  
pp. 725-729
Author(s):  
Xiao Hua Xie ◽  
Quan Zhou ◽  
Cheng Bo Xiao ◽  
Xin Tang
Keyword(s):  
Magnetic Field ◽  
Grain Size ◽  
Low Voltage ◽  
Pulse Frequency ◽  
Pulse Voltage ◽  
Experimental Results ◽  
Pulsed Magnetic Field ◽  
Equiaxed Grains ◽  
Dendritic Structures ◽  
Refinement Effect

Effects of different pulse voltage and frequency on solidified structure of superalloy K4169 under low-voltage pulsed magnetic field (LVPMF) were investigated in this paper, and the related mechanism was also discussed. The experimental results show that grain of superalloy K4169 can be refined greatly by LVPMF treatment during the course of solidification. Growth of dendrite is restrained and primary grain is changed from large dendrites to smaller equiaxed grains. When the pulse voltage is at 0-280V, grain size of the alloy decreases as pulse voltage increases, and primary dendrites are fractured from well-developed dendrites into fine equiaxed grains and non-dendritic structures. When the pulse frequency is at 0-5Hz, the increase of pulse frequency enhances the refinement effect of LVPMF processing. With the increase of the pulse frequency, grain size of the alloy increases.

scholarly journals Numerical Simulation of Grain Refinement of Pure Copper Solidified under Pulsed Magnetic Field

2019 ◽  
Vol 37 ◽  
pp. 537-540
Author(s):  
Xiaohui Feng ◽  
Yi Zhang ◽  
Jingpeng She ◽  
Lihong Li ◽  
Min Zhong ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Grain Refinement ◽  
Pure Copper ◽  
Pulsed Magnetic Field
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