The invention discloses a method for preparing amorphous /
crystal composite structure aluminium-based
alloy. The composition is as follows: Al(84-x)Ni10Ce6Prx (in percentage by weight), or Al(84-x)Ni10Ce6Zrx (in percentage by weight), wherein x is equal to 1 to 4. The method for preparing the amorphous /
crystal composite structure aluminium-based
alloy comprises the following steps: during the processes of fast solidifying
aluminium-based
alloy melt and preparing the amorphous alloy, applying stable and constant
magnetic field action on a melt solidification process; and controlling the forming of the solidified tissue structure of the alloy, thus obtaining amorphous /
crystal composite structure materials. The intensity of the applied stable and constant
magnetic field ranges from 900Gs to 1,200Gs; the selected alloy is alloy capable of forming complete amorphous tissues, parent alloy is prepared through
vacuum arc melting or
vacuum induction melting according to composition distribution, then the stable and constant
magnetic field is applied on the melt solidifying process, and the amorphous / crystal composite structure materials are prepared according to the preparation technique of fast solidifying alloy melt and preparing the amorphous alloy. The invention provides a method for directly preparing the amorphous / crystal composite structure tissues, the phase distribution of crystals in the prepared amorphous / crystal composite structure is uniform, the preparation process ensures that the original preparation technique is not changed, and the technique process is simple.