Material science & manufacturing process for product design and development

https://youtu.be/NcsUbIDGlT8

HeatTreatment the process of changing the property of material by heating & cooling process, purpose of heat treatment. relieve internal stress improve machinability & mechanical properties like ductility malleability hardness toughness & improve grain size , existing properties of materials ---heating---existing properties wiped out & boild is ready to gain new structure-- cooling,moderate cooling (normalizing process ),-very slow cooling(annealing process),-very fast cooling (quenching,hardening),,,,, surface hardening--carburizing ,cyniding,nitring, induction hardening,age hardening,spberadize hardening,flame hardening,tempering

https://youtu.be/HRZpwNpopEg https://youtu.be/K2mpVqY7nRQ