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Heattreatment - Drexel University Goodwin College of...

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Drexel University Goodwin College of Professional Studies Applied Engineering Technology MET 101 Manufacturing Material Laboratory Experiment No. 4 Submitted by Mike Coover Submitted to Dr. Richard Y Chiou Date: March 3, 2007
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Purpose: The principle behind this experiment is to become familiar with the practices of metallography and the study of mechanical properties which include hardness and toughness. Metallography is the science and ability of preparing a metal surface for analysis by means of grinding, polishing, or etching to reveal micro-structural elements. In addition, a direct correlation between the heat treatment of different steels and the resulting properties is going to be determined. Description/Data: Before explaining the experimental procedure for our tests, it is important to understand the theory of heat treatment. By heating a specific carbon steel to a temperature above 1400ºF, the natural structure of the steel begins to be adequately modified. An iron phase change occurs and the resulting product is solid carbide in gamma iron. With any given rate of cooling,
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