High-scandium-content aluminum and scandium alloy and preparing method thereof

Abstract

The invention provides a high-scandium-content aluminum and scandium alloy and a preparing method of the alloy, and belongs to the technical field of high-performance aluminum alloy materials. The high-scandium-content aluminum and scandium alloy comprises, by weight percent, 55% to 70% of scandium and the balance aluminum. The preparing method comprises the steps of firstly, powder screening, wherein aluminum powder and scandium powder pass through screens with different meshes, and raw materials with the needed granularity are screened out; secondly, material proportioning, wherein a certain amount of aluminum powder and a certain amount of scandium powder are weighed, and the aluminum powder and the scandium powder are mixed according to a certain mass proportion; thirdly, grinding, wherein the aluminum and scandium mixed powder is put into a ball grinding machine to be sufficiently ground, and mixing is uniform; and fourthly, sintering, wherein the aluminum and scandium mixed powder which is uniform in grinding is loaded into a mold, a hydraulic machine is used for carrying out pre-pressing, shove charging and sintering program setting are carried out, and the aluminum and scandium alloy is prepared in a sintered manner. The prepared aluminum and scandium alloy has the beneficial effects of being high in compactness, high in scandium content, good in component uniformity and good in subsequent machinability, and a reliable raw material can be provided for a sputtering target material in the special field.

Description

technical field

[0001] The invention relates to an aluminum-scandium alloy with high scandium content and a preparation method thereof. The alloy is mainly used for sputtering targets in special fields, and belongs to the technical field of high-performance aluminum alloy material preparation. Background technique

[0002] Adding a certain amount of scandium to aluminum can refine grains, increase recrystallization temperature, improve corrosion resistance, increase strength and plasticity, etc. Therefore, aluminum scandium alloys have high strength, corrosion resistance, high temperature resistance and weldability With good comprehensive performance, it has a wide range of applications in cutting-edge technology fields such as aerospace and nuclear energy engineering, as well as transportation, household appliances and other fields. With the rapid development of science and technology, and the emphasis of various countries on the research of key materials used in key fields...