Method for strengthening tensile performance of aluminum-silicon alloy through FeBSi metal glass

Abstract

The invention discloses a method for strengthening tensile performance of an aluminum-silicon alloy through FeBSi metal glass, and relates to the field of aluminum alloy machining. The method comprises the four steps including metal glass containing strengthening agent preparing, aluminum alloy preparing, aluminum alloy strengthening treatment through the FeBSi metal glass and T6 heat treatment onthe aluminum alloy subjected to metal glass strengthening treatment. By adoption of the technical scheme, the steps are reasonable, and cheapness and high efficiency are achieved, wherein one kilogram of FeBSi metal glass only costs about 20 yuan and can be used for strengthening treatment of one ton of molten aluminum; the room-temperature and high-temperature toughness of the aluminum alloy isgreatly improved, wherein particularly, the high-temperature yield strength of the aluminum alloy is greatly improved, and the high-temperature yield strength of the aluminum alloy obtained after strengthening treatment can be increased by 59.42% to the largest degree; and strengthening is efficient, cost is low, and huge industrial application potentials and value are achieved.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing, in particular to a method for strengthening the tensile properties of an aluminum-silicon alloy by utilizing FeBSi metallic glass. Background technique [0002] In the fields of automobiles, ships, aerospace, etc., the materials of many components (such as engines, etc.) do not work at room temperature, but serve for a long time under high temperature conditions. Because temperature has a great influence on the performance of materials, and different materials have different performance changes at high temperatures, it is necessary to study the high-temperature performance of materials, which is of great significance for the development of new lightweight high-temperature materials. With the improvement of engine technology, the proportion of aluminum alloy material parts in engine parts is increasing year by year. Compared with cast iron, aluminum alloy has excellent thermal conductivit...

AI Technical Summary

Problems solved by technology

[0003] At present, the strengthening agents of mainstream aluminum alloys such as: Al~Ti~B, Al~Ti~C, Al~Ti~C~B and other inoculants all contain Ti element. During (modification) treatment, Ti element will react with Si element to form TiSi, TiSi 2 and Ti 5 Si 3 Poisoning occurs due to equal phases, the structure refinement efficiency is greatly reduced and the performance cannot be further improved. The Al-B modifier has an excellent effect on the refinement of the Al-Si alloy system that does not contain Ti elements, but the Ti impurity content in the alloy is higher than When it is 0.04%, it will have the same poisoning effect as Al~Ti~B and other modifiers. The scope of application to the alloy system is narrow, and the purity of the aluminum alloy is extremely high, so the scope of application is limited

Other modifiers or inoculants such as: Al~Sr, Al~Ce, Al~La, etc. contain rare earths with high cost, and have no significant effect on the refinement of Al~Si alloy structure

Existing ways of strengthening aluminum alloys cannot meet industrial needs

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