采用LMC 定向凝固技术得到了Nd_(17)Fe_(75)B_8合金单向柱晶,柱晶宽度为60—120μm,随抽拉速度增大而减小。分析发现,柱晶由Nd_2Fe_(14)B 基体相初生枝晶定向生长而形成,Nd_2Fe_(14)B 的晶体学择优生长方向为[100],与其易磁化轴[001]垂直。
Directional columnar crystal specimens of NdFeB alloy have been obtainedby LMC directional solidification technique.The width of columnar crystal is 60—120μm,which decreases with increase of the drawing velocity.It has been found that the columnarcrystal
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