Near net shape manufacturing method

The invention discloses a method. The method comprises the steps that a premolding part is molded through an additional material manufacturing method, specifically, the premolding part comprises multiple columnar crystals with long axes; and the premolding part is deformed in the deformation direction, specifically, a certain deformation angle is formed between the long axes of the columnar crystals and the deformation direction, and the deformation angle ranges from 60 degrees to 120 degrees.