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通过重熔和施加脉冲电流,研究了过共晶Fe-C-B合金凝固组织中初生Fe2B的遗传性和消除方法.当不施加电脉冲时,重熔难以有效消除过共晶Fe-C-B合金初生Fe2B的凝固遗传性.重熔温度较低时施加电脉冲影响凝固组织中初生Fe2B的空间分布但不改变其长杆状形态.提高重熔温度并施加电脉冲能消除凝固组织遗传的影响,使Fe2B由长杆状转变为颗粒状,并明显减少Fe2B的析出.
By remelting and applying pulse current, the inheritance and elimination of primary Fe2B in the solidified microstructure of hypereutectic Fe-CB alloy were studied. When no electrical pulse was applied, remelting was difficult to effectively eliminate the primary Fe2B Coagulation hereditary.Under the remelting temperature is low applied electrical impulses affect the spatial distribution of primary Fe2B coagulation tissue but does not change the long rod-like morphology.Remelting temperature and the application of electric pulse can eliminate the influence of coagulation tissue genetic, Fe2B From rod-shaped into granular, and significantly reduce the precipitation of Fe2B.