3 stages of heat treatment process

3 Stages of Heat Treatment Process


The stages of heat treatment involve three main processes: heating, soaking, and cooling. This heat treatment is used to change the mechanical properties of a metal material by heating and cooling.

Different stages of the heat treatment process are levels a metal must undergo to achieve the desired properties. The first stage of the process is heating, which is done to change the structure of the alloy when heated to a particular temperature.

The second stage, soaking, is done to completely change the whole structure of the metal. And the final stage, cooling, is done to change the soaked structure from one chemical composition to another as a result of how it is cooled.

Now, let’s go deeper into explaining the stages of heat treatment process!


Understanding Solution Heat Treatment


Three Stages Of Heat Treatment

The stages of the heat treatment process include heating, soaking, and cooling.


Heating is the first stage in a heat-treating process. It is done to change the structure of alloys when heated to a specific temperature. The alloy is said to be at room temperature either as a solid solution, a mechanical mixture, or a combination of both.

In a solid solution, two or more metals are used on each other to form a solution without showing their elements, even when checked with a microscope. In the mechanical mixture, the elements and compounds are visible and compacted by a matrix of base metals.

3 stages of heat treatment process


Soaking is the stage at which the complete part of the heated metal completely changes its structure. The mass of the metal will determine the time it will be soaked. In other words, soaking is when a part of metal evenly turns red due to being subjected to heat for some time.


The third stage of heat treatment is cooling. It also changes the structure of the soaked metal from one chemical composition to another due to the way it is been cooled, either by quenching or by still air.

None of the three stages of heat treatment can be left aside. The heating stage helps in changing the structure of the metal from room temperature until it completely reaches the soaking stage, which is when the metal evenly turns red. The cooling stage is the stage at which the metal completely changes to its new properties due to the cooling process.

Heat Treatment of Aluminum and Aluminum alloys

Watch the video to learn how heat treatment is performed, describing heating, soaking, and cooling.

That is all for this article, where I explain the various stages of heat treatment. I hope you got a lot from the reading; if so, kindly share it with other students. Thanks for reading, see you next time!


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