Скачать с ютуб Iron-Carbon Phase Diagram | Creating | Steel | Cast Iron | hypo-eutectoid | hyper-eutectoid в хорошем качестве

Iron-Carbon Phase Diagram | Creating | Steel | Cast Iron | hypo-eutectoid | hyper-eutectoid

In this video we deal with steels as the most important alloy in mechanical engineering, consisting of iron and carbon. We will explain the phase diagram relevant for steels, which is also referred to as the iron-carbon phase diagram (steel part). In this context, we discuss in more detail the stable system with its graphite precipitation, which is relevant for cast irons, and the metastable system with its cementite precipitation (Fe3C), which is relevant for steels. We will also explain the determination of microstructural components such as ferrite and pearlite or grain boundary cementite for hypereutectoid, eutectoid and hypoeutectoid steels. 00:00 Iron, steel and cast iron 00:43 Cooling curve of soft iron (pure iron) 02:34 Creating iron-carbon phase diagram 03:45 Lattice transformation & solubility 05:34 Complete iron-carbon phase diagram 08:00 Solidification of steels 09:03 Gamma-Alpha lattice transformation (austenite into ferrite) 10:25 Stable system (precipitation of graphite in cast iron) 11:36 Metastable system (precipitation of cementite in steels) 13:34 Stable and metastable phase diagram in comparison 14:28 Complete cooling curve of soft iron (delta-iron) 16:47 Microstructure transformation of steels 19:27 Eutectoid steel 21:09 Solubility of carbon in austenite (gamma-iron) 22:55 Hypereutectoid steel 24:50 Approaching the eutectoid composition 26:31 Hypoeutectoid steel 28:13 Approaching the eutectoid composition 29:47 Summary 32:18 Determination of the microstructure proportions (hypoeutectoid steel) 34:55 Determination of the phase fractions (hypoeutectoid steel) 36:12 Determination of the microstructure proportions (hypereutectoid steel) 37:07 Determination of the phase fractions (hypereutectoid steel) 37:44 Microstructure diagram