MANUFACTURING METHOD OF INTERMETALLIC COMPOUND GRAIN, CRYSTAL GRAIN REFINING AGENT FOR CAST ALUMINUM USING THE SAME AND MANUFACTURING METHOD THEREFOR, MANUFACTURING METHOD OF ALUMINUM OR ALUMINUM ALLOY CASTING MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a crystal grain refining agent containing AlFeTiintermetallic compound particle having an L1structure with smaller unconformity degree δ than conventional ones to cast aluminum or cast aluminum alloy.SOLUTION: A crystal gain refining agent is manufactured by dispersing spherical AlFeTiintermetallic compound particle having an L1structure manufactured by a gas atomization device in a parent phase mainly containing aluminum and the crystal grain refining agent is added to a molten metal of cast aluminum or cast aluminum alloy and the molten metal is injected to a mold.SELECTED DRAWING: Figure 13