Heat-free aluminum alloys and their preparation methods

By adding rare earth elements to aluminum alloys and using appropriate ratios for multiple alloying and refining slag removal processes, heat-free aluminum alloys were prepared, solving the problem of insufficient fluidity in traditional aluminum alloy processes and achieving improved mechanical properties and fluidity of high-vacuum die-cast aluminum alloys.

CN118835133BActive Publication Date: 2026-01-06CHINA FAW CO LTD
2 Cites 0 Cited by

Patent Information

Application Number
CN202410864985.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2026-01-06
Estimated Expiration
2044-06-28

AI Technical Summary

Technical Problem

Traditional aluminum alloy processes require T6 heat treatment to meet mechanical property requirements, but the fluidity cannot meet the process requirements of high-vacuum integrated die casting, resulting in a decrease in tensile strength, yield strength and elongation after fracture.

Method used

Rare earth elements are added to aluminum alloys in appropriate proportions to prepare heat-free aluminum alloys, including elements such as Si, Mg, Sn, Ti, Zn, Sr, Fe, Cu, Mo, V, Cr, Ce, Y, Gd, and Dy. After multiple alloying and refining slag removal processes, the alloys are then subjected to high-pressure die casting.

Benefits of technology

This technology improves the mechanical properties of heat-free high-vacuum die-cast aluminum alloys, enhancing tensile strength, yield strength, and elongation after fracture while maintaining good fluidity, making them suitable for manufacturing large structural components.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application relates to the technical field of aluminum alloy, and discloses a heat-treatment-free aluminum alloy and a preparation method thereof, which comprises the following steps: preheating industrial pure aluminum, pure magnesium and various required intermediate alloys under the environment of 200-220 DEG C; calculating and weighing the above materials according to the mass percentage of the chemical composition of the alloy; adding the first material into a smelting furnace and carrying out first alloying treatment and first refining slag removal to obtain a first alloy melt; adding the second material into the first alloy melt to carry out second alloying treatment and second refining slag removal, thereby obtaining a second alloy melt; adding the third material into the second alloy melt to carry out third alloying treatment and third refining slag removal, thereby obtaining a third alloy melt; introducing argon into the third alloy melt; smelting after standing; obtaining a fourth alloy melt; and carrying out high-pressure die casting on the fourth alloy melt to obtain the heat-treatment-free aluminum alloy. Therefore, the heat-treatment-free aluminum alloy has the advantages of high tensile strength, yield strength and elongation after fracture, and good fluidity.
Need to check novelty before this filing date? Find Prior Art