The invention discloses castable and forgeable
solid solution
tungsten alloy and a preparation method, and belongs to the technical field of
refractory alloy. According to the chemical components, thecastable and forgeable
solid solution
tungsten alloy comprises, by weight percentage, 20%-75% of W, 0%-20% of Mo, 0%-20% of Nb, 0%-20% of Ta, 0%-10% of Hf, 0%-10% of V, 0%-10% of Zr, 0%-10% of Ti, 0%-10% of Al, 0%-5% of Cu and the balance Ni or Co and inevitable
impurity elements and microelements, specifically, the
Ni element and the
Co element can be partially replaced by one or two or more elements of 0%-50% of Ir, 0%-30% of Fe, 0%-20% of Cr, 0%-20% of Re and 0%-20% of Ru. The castable and forgeable
solid solution
tungsten alloy further comprises the following one or two or more
grain boundary strengthening elements of 0.001%-1.0% of C, 0.001%-1.0% of B, 0.001%-1.0% of Y, 0.001%-1.0% of La or Ce or the
rare earth element, 0.001%-1.0% of Mg and 0.001%-1.0% of Ca. The castable and forgeable
solid solution tungsten alloy has the advantages of being high in density, ultrahigh in strength, high in
toughness and high in hot-working performance. The alloy is castable and forgeable and canbe formed through 3D printing, the density ranges from 11.0g / cm<3> to 15.0g / cm<3>, the
impact toughness is 80J / cm<2> or above, and the tensile strength is 1700MPa or above.