When metal is heated and cooled, it can be shaped and hardened. Each technique for heating and cooling metal has its own purpose.
Relate annealing, hardening, and tempering to crystal structure and metallic bonding. This video is part of the Flinn Scientific Best Practices for Teaching .
Chemical Bonding, Flinn, Flinn Scientific, High School, chemistry, demonstration, demo, chem demo, science, experiment, science experiment, lab, laboratory, .
Softening processes such as annealing and normalising, and hardening processes such as hardening, tempering, thermochemical processes, carburising, nitriding and boronising are all explained.
Annealing, normalising, Hardening, quenching, tempering, Carburising, nitriding, boronising, martensite, austenite, ferrite, TTT curve, IT curve, time temperature transformation curve, isothermal transformation curve, hardenability, design aspects, .