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new research yields super-strong aluminum alloy: here\'s what you need to know

by:AAG     2020-11-05
The researchers created a super
The powerful aluminum alloy, comparable to the advantages of stainless steel, is an advance with potential industrial applications.
\"Most lightweight aluminum alloys are soft and inherently low in mechanical strength, which hinders a wider range of industrial applications,\" said Zhang Xinghang, a professor at Purdue University in the United States.
The researchers created a super
The powerful aluminum alloy, comparable to the advantages of stainless steel, is an advance with potential industrial applications.
\"Most lightweight aluminum alloys are soft and inherently low in mechanical strength, which hinders a wider range of industrial applications,\" said Zhang Xinghang, a professor at Purdue University in the United States. \"However, high-
With the same strength as stainless steel, light aluminum alloy will completely change the automotive and aerospace industries . \"
New research published in the journal Advanced Materials and Nature Communications shows how to change the microstructure of aluminum to give greater strength and scalability. The new high-
By introducing \"stacking defects\" or distortions into the crystal structure, the strength aluminum becomes possible.
Although these metals are easily produced in metals such as copper and silver, they are difficult to introduce aluminum due to its high \"stacking fault energy\", the researchers said.
The lattice of a metal consists of repeated sequences of atomic layers.
If one layer is missing, there is a layer of error. Meanwhile, so-
The two-layer fault called \"double boundary\" can be formed.
Zhang said a stacked fault called the 9R phase is particularly promising.
\"It has been shown that it is difficult to introduce the double boundary into aluminum.
\"Due to the high stacking fault energy of aluminum, the formation of 9R phase is more difficult,\" Zhang said . \".
\"You want to introduce Nano twins and 9R phases in nano-granular aluminum to increase strength and scalability and increase thermal stability,\" said Zhang . \".
Now researchers have learned how to easily achieve this 9R phase and nano twins in aluminum.
\"These results show how to make aluminum alloy that is quite or even stronger than stainless steel,\" he said . \".
\"There are a lot of potential business implications in this development,\" Zhang said . \".
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