Types of alloys | solid solution | mixed crystal alloys | eutectic alloys скачать в хорошем качестве

Types of alloys | solid solution | mixed crystal alloys | eutectic alloys

This video explores different types of alloys. Alloys are metallic materials created by melting two or more metals together. They are used to modify the mechanical and chemical properties of metals. Depending on the solubility of the components in the solid state, alloys are classified into three types: solid solution alloys, eutectic alloys, and partially soluble alloys. Solid solution alloys form when the atoms of the alloying components completely dissolve into each other in the solid state. The atoms can either replace regular lattice positions (substitutional solid solution) or fit into interstitial spaces (interstitial solid solution). However, complete solubility only occurs under specific conditions, such as having the same lattice type and similar atomic radii. Eutectic alloys occur when the components are completely insoluble in the solid state. While the atoms mix in the liquid state, they separate upon solidification. This happens when the alloying elements have significantly different chemical properties or different lattice structures. As a result, each component forms its own crystal structure, creating a microstructure composed of distinct c The most common type of alloy exhibits partial solubility. This results in the formation of two different solid solutions: the alpha-phase solid solution, which mainly consists of the base metal with a limited amount of dissolved alloying elements, and the beta-phase solid solution, which primarily consists of the alloying element with a limited amount of base metal atoms. By controlling solubility and microstructure, engineers can develop alloys with specific properties such as strength, hardness, corrosion resistance, or thermal conductivity. This is crucial in various technical applications, particularly in aerospace, mechanical engineering, and medical technology. 00:00 Alloys 01:19 Producing alloys 02:04 Complete solubility in the solid state (solid solution) 03:10 Substitutional solid solution (Hume-Rothery rules) 05:03 Interstitial solid solution 05:59 Insolubility in the solid state (mixture of pure crystals) 07:59 Limited solubility in the solid state 09:24 Summary