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LECTURE NOTES ON number of commercially-significant applications where heat treatment are important. Note the difference in size of the atoms. Heat Treatment lecture notes.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. All basic heat-treating processes for steel involve the transformation of austenite. • By varying the manner in which, carbon steels are heated and cooled, Hardening heat treatments particularly suitable for Steels. –Many phase transformation involved even in plain carbon steel and low-alloy steel. One notes from the figure that heat treatment of steels presents large opportunity to manipulate the number and proportion of different phases by predeterminedHeat Treatment. 3. Annealing involves heating the material to a predetermined temperature and hold the material at the temperature and cool the material Heat treatment lecture notes pages-135-170-converted. 1. HEAT TREATMENT PROCESS SUBJECT: MATERIAL SCIENCE; 2. Classification HEATTREATMENT BULK Annealing The heat-treatment of plain-carbon steels. Engineering Materials and Processes. Note: This lecture closely follows text (Higgins Ch12)