Iron-carbon alloy is a binary alloy composed of iron and carbon. The most widely used type of iron-based materials-carbon steel and cast iron, is an industrial iron-carbon alloy material. The reason for the wide range of application of steel materials is firstly that the available composition span is large, from nearly carbon-free industrial pure iron to cast iron with a carbon content of about 4%. Within this range, the phase structure and microstructure of the alloy are greatly changed. Change; In addition, various thermal processing techniques, especially metal heat treatment techniques, can be used to greatly change the structure and properties of a certain component alloy.