HEAT RESISTANT AND HIGH OXIDATION RESISTANT MOLD MATERIAL FOR CU-ALLOY DIE CASTING AND HOT-WORKING

摘要

A composition region which ensures an appropriate service life of the mold material by developing a new alloy material using alloy elements added to nickel and a composition of the alloy elements, thereby improving high temperature strength, toughness, oxidation resistance and thermal impact resistance of a mold material for Cu alloy die casting and hot working when casting a material formed of an alloy with a high melting point such as Cu alloy by die casting is provided. A heat resistant and oxidation resistant mold material for Cu-alloy die casting and hot working comprises: 10 to 30 at.% of aluminum(Al); 0.1 to 15 at.% of chromium(Cr); 0.1 to 10 at.% of zirconium(Zr); 0.1 to 4 at.% of iron(Fe); 0.1 to 1 at.% of carbon(C); 0.1 at.% of boron(B); 0.1 to 10 at.% of niobium(Nb); 0.1 to 10 at.% of molybdenum(Mo); 0.1 to 10 at.% of tungsten(W); within a range of 0.5 at.% of traces of other unavoidable elements, and the balance of nickel(Ni) based on the total alloy weight.