Aluminum alloy

[China Aluminum Network] Aluminum alloy is an important engineering material for national economic construction and national security. But so far, some of the key technologies for the preparation of high-performance aluminum alloys in China have not yet been broken. The high-performance aluminum alloy materials required for many key models still rely on imports, and there are still many jobs for high-performance aluminum alloys that are waiting for the people to do.

There are several ways to improve the performance of aluminum alloys, of which the strengthening and toughening of microalloying is the frontier field of high-performance aluminum alloy research in the past 20 years. The so-called microalloying toughening generally refers to adding or compounding a trace element with a mass percentage of less than 0.5% to an aluminum alloy to substantially increase the strength and toughness of the alloy. Among them, the addition of cesium is particularly noticeable.

As a transition element and a rare earth element added to aluminum and aluminum alloys, niobium not only can significantly refine the as-cast alloy grains, increase the recrystallization temperature and thereby increase the strength and toughness of the aluminum alloy, but also can significantly improve the aluminum alloy. Solderability, heat resistance, corrosion resistance, thermal stability, and resistance to neutron irradiation damage. Therefore, aluminum-antimony alloys are considered as a new generation of high-performance aluminum alloy structural materials for aerospace, naval and military applications.

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