MATERIAL PRODUCED BY POWDER METALLURGY WITH IMPROVED ISOTROPY OF THE MECHANICAL PROPERTY

摘要

PROBLEM TO BE SOLVED: To provide broad-flat material produced by powder metallurgy, and to produce cutting tools or piercing tools such as dies having long tool lives from the material.;SOLUTION: In a material produced using powder metallurgy with a rectangular or flat elliptical cross section, so-called broad-flat material with a width that is at least 3.1 times the thickness and a degree of deformation (deformation=the area of the final cross-section/the area of the initial cross-section) of at least 2 times, the toughness of the material, measured in any direction, more particularly, in the thickness direction of the cross section, is greater than that of the material in its hot isostatically pressed, undeformed state.;COPYRIGHT: (C)2010,JPO&INPIT