A dramatic increase in dendrite number for directionally solidified superalloy DZ417G with a strong static magnetic field

A dramatic increase in dendrite number for directionally solidified superalloy DZ417G with a strong static magnetic field
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强静磁场下定向凝固高温合金 DZ417G 枝晶数量显着增加

DOI:
10.1016/j.matlet.2008.10.047
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发表时间:
2009-02
期刊:
影响因子:
3
通讯作者:
--
中科院分区:
材料科学3区
文献类型:
--
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结果表明:在不同拉伸速度和温度梯度下,强静磁场作用下定向凝固的高温合金DZ417的单位面积枝晶数增加;随着磁场强度的增强,定向凝固高温合金DZ417的单位面积枝晶数逐渐增加。这是由于磁阻尼和热电磁对流之间的相互竞争。因此,可以通过调节磁场强度来控制定向凝固高温合金的枝晶数,这为提高高温合金的性能提供了一条新的途径。
The results show the per area dendrite number for directionally solidified superalloy DZ417 is increased with a strong static magnetic field at the different drawing speeds and temperature gradient. With enhancing the intensity of magnetic field, the per area dendrite number for directionally solidified superalloy DZ417 gradually increases. This is due to the interactive competition between the magnetic damping and thermoelectromagnetic convection. Therefore, the dendrite number for directionally solidified superalloys can be controlled by tuning the intensity of magnetic field, which may provide a new way for improving the properties of superalloys.
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