Damascus steel is a traditional material from steel that has superplastic properties (the ability to undergo permanent deformation with...
Damascus steel is a traditional material from steel that has superplastic properties (the ability to undergo permanent deformation without cracking up to 1000%).
With these unique properties, Damascus steel is widely used as an ingredient for making swords and weapons. According to this myth, weapons made using Damascus Steel will never be blunt or broken. In addition to having superplastic properties of Damascus steel also has the characteristics of the presence of a water pattern (watermarking) on ?? its surface.
Damascus steel was first made in India and later extended to Syria. The name Damascus itself was given by Westerners who were involved in the Crusades and found weapons made of Damascus steel in the city of Damascus, Syria.
For hundreds of years, some thinkers sought the secret of how blacksmiths in the Middle East made hard and flexible metals known as Damascus steel.
The research conducted by a group of scientists from the University of Dresden revealed a remarkable secret, namely the existence of carbon nanotubes (CNT) in the Damascus Sword. Apparently, without realizing it, sword makers in the 12th century used nanotechnology when forging swords. Unfortunately, this sword-making technique disappeared in the 18th century.
During the Crusade, European troops were struck by the sword which was owned by Arab and Persian forces because it could easily penetrate the armor of the Crusaders, even able to split their shields.
Nanotechnology includes the development of technology on a nanometer scale, usually 0.1 to 100 nm (one nanometer is equal to a thousandth of a micrometer or one-millionth of a millimeter). This term is sometimes applied to very little technology. The scope is also extensive, can spread to various fields such as medicine, robotics, physics, etc. Whereas carbon nanotubes are cylindrical carbon bonds with a diameter of 4 nanometers (1 nano = 1 / 1,000,000,000).
The material used is wootz steel, rich in carbon nanotubes. This material is said to have been imported from India, and the manufacture of the Damascus Sword was stopped because of the exhaustion of this material.
Carbon nanotubes have extraordinary character, and their strength is 20-30 times the most durable steel strength, and the level of hardness. So if we say a wire with a diameter of several millimeters can ultimately hold a person's body to hang itself from a helicopter, only nanotubes need a fence with a cross-section of 1/20 of steel bars. - Section area. With the same cross-sectional area, carbon nanotube wire can withstand about 20 times the load that can be held by steel wire.
Steel generally has a dominant phase called soft ferrite. However, in Damascus Steel Swords, there is a solid carbon nanotube structure (period). The structure of carbon nanotubes is distributed correctly in ferrite, resulting in a very remarkable combination of final properties. It was the sword that European knights feared for hundreds of years, before.
Moreover, until now, no scientist has been able to find a way to make carbon nanotubes in the microstructure of the steel. Including how to make a Damascus Sword with the same structure as the original. Another essential and amazing lesson is that with experience, it turns out that people can create something elegant, even more than the history of knowledge itself.
Source: google, wikipedia
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