How crystal grains form
“How exactly do crystal grains form?”
The existence of crystal grains is one of the foundational aspects of materials science and engineering. However, how exactly do such phenomena form? Well, let’s use our scientific mindset to analyze it. We know that when a material is in its liquid form, it has no crystalline structure. However, as it cools down, a definite structure begins to formalize. However, this process does not happen uniformly throughout the material but instead begins in a few points within this substance. As time goes on, these points will grow in their respective directions, and eventually will collide with the other crystal structures, forming crystal grains.