Light metal forging material manufacturing method and forged member manufacturing method using the material

摘要

A high-quality forging material made of a light metal alloy having a small quantity of defects is provided by properly setting the casting conditions or injection molding conditions, and a sound forged member made of a light metal alloy having excellent strength characteristics is obtained by properly setting the forging conditions. Provided is a forging material to be used as a material subjected to a forging process for obtaining a forged member made of a light metal. The forging material is molded by a semi-solid injection molding method having a screw velocity of not smaller than 1 Äm/sÜ, and having a relative density of not lower than 90%. A molten material of a magnesium alloy is used as the light metal molten material.