Metal Solidification Research Group, Shanghai University. Effect of Pulsed Magnetic Field on Solidification Structures of Metals. Zhai Qi-Jie *, Gao Yu-Lai, Li Qiu-Shu. *Corresponding author, email: [email protected] Personal website: http://www.foundrymate.com. October 11, 2004.
Zhai Qi-Jie *, Gao Yu-Lai, Li Qiu-Shu
*Corresponding author, email: [email protected]
Personal website: http://www.foundrymate.com
October 11, 2004
and the solidification equipment
Macrostructure of the solidified samples under the pulsed magnetic field with different intensities
Relation between the intensity of the pulsed magnetic field and the average grain size
Distribution of the magnetic induction intensity in the intense magnetic generator
Relationship between the intensity of pulsed magnetic field and solidification temperature
Chemical composition of experimental gray iron
Graphite morphology of hypoeutectic gray iron under different pulsed magnetic field parameters
Graphite morphology of hypereutectic gray iron under different pulsed magnetic field parameters
Effect of the magnetic intensity on the
length of the graphite
Effect of the magnetic intensity on the thickness of the graphite
Relation between the temperature and time for solidification of gray iron
The solidified structure of pure aluminum evolved from columnar grains to equi-axed ones, and the grain size becomes smaller as the augment of the intensity of pulsed magnetic field. The effect of the pulsed magnetic field on the solidification temperature of Al can be neglected.
The pulsed magnetic field can refine and improve the graphite morphology of the gray iron. Also, the pulsed magnetic field can decrease its undercooling of the eutectic transformation.
The solidification structures of austenitic stainless steel are changed from coarse columnar crystals to narrow and thin ones after adding pulsed magnetic field. However, equi-axed grains can’t be obtained.
Financially supported by
(1) National Natural Science Foundation of China, (2) Science and Technology Committee of Shanghai
1－Magnetic field generator 2− Pouring cup
5−Cooling System 6−Computer-controlled
10－Pulse power source