You have been given a piece of steel but you do not know its composition. Describe...

You have been given a piece of steel but you do not know its composition. Describe the process you would use to harden it?

Expert Solution

Solution :

One of the most common is Martensitic transformation, also known as quenching and tempering. It is a complex process to harden steel, and metal workers have to be careful to carry out each step correctly. First, they must heat the steel to an extreme temperature. Then, the crystal structure inside the steel changes to allow more carbon to be dissolved. At that point, the metal has to be quenched, or cooled, quickly enough so the carbon doesn’t have time to form other unwanted materials in the metal. The quick cooling makes it stay in a hardened state, making it a stronger material better suited to withstand a lot of wear and tear. The different states it goes through during the process are called austenite and martensite, and an austempering and martempering resource can give you more information about the process.

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