Reasonable forging of cutting-edge
materials can break up columnar grains, reduce macrosegregation, transform the
as-cast structure into a forged structure, and, under appropriate temperature
and stress conditions, weld internal voids to improve the material’s density.
After forging, the ingot forms a fibrous
structure. Through further rolling, extrusion, and die forging, the forging
obtains a rational distribution of fiber flow direction.
Forging also helps to control grain size
and uniformity, improve the distribution of secondary phases (such as alloy
carbides in ledeburitic steels), and achieve deformation strengthening or
deformation–phase transformation strengthening of the microstructure.
Ma'anshan Licheng Blade Manufactory
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