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Japan develops high strength magnesium alloy parts, might be used in car

Writer： Admin Source： MDM Date：2017-09-26

Compared with the aluminum sheet metal sheet used in the current car body of some car companies. The forming
performance of metal is excellent at normal temperature. After heat treatment, the strength of the magnesium alloy is higher
than that of aluminum alloy. It only used the common metal materials, and it might become a low – cost metal sheet for
lightweight vehicle.
A long time ago, the lightweight magnesium alloy had attracted the attention of the automobile industry, and many
automakers wanted to apply the material to various automobile applications. However, due to the low strength and poor
forming performance of magnesium alloy at room temperature, the application of magnesium plate alloy has been hindered.
Generally, extended molding capacity is inverse correlation with yield strength. For this reason, it is difficult to ensure high
strength and high forming performance in the meantime.
However, recent studies have shown that the dilution of Mg - al-ca - Mn (AXM) system can be made into an industrial-
grade wrought alloys, which makes it have remarkable highspeed extrusion, and its aging hardening sensitivity is extremely
fast. If it can be applied to plate-like alloys, it is expected to have a huge impact on the automotive industry. And might be
applied in metal injection molding technology.
Therefore, the team has repeatedly tried to develop the plate-like alloy through AMX system. In the process of processing
Mg - 1.1 al-0.3 Ca - 0.2mn During the time of the alloy, it was found that a small amount of zinc was needed After adding
to Mg - 1.1Al - 0.3Ca - 0.2Mn alloy, it will greatly improve its extension molding performance. In addition, after a short
period of aging will lead to a significant increase in the strength of zinc-containing alloys.
The newly developed alloy is named AXMZ1000, which can be compared to the medium-strength aluminum alloy at
normal temperature, which is used to make car body parts. In addition, the strength of the alloy is 1.5 to 2 times higher than
that of aluminum alloy.
After adding a few zinc and magnesium metal to the alloy, a fine grain structure will be formed. After adding aluminum
and calcium, it will achieve high strength, thanks to the formation of atomic clusters, which in turn enhance the strength of
the alloy.
The newly developed alloys are made of ordinary metal, and their materials are not expensive. The alloy is simple to
manufacture and heat treatment. The alloy can be machined into metal sheet, and the process is also common in aluminum
alloy manufacturing

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