Question

USE SI UNITS

Problem Statement Normalizing is a heat treatment process used to relieve internal stresses, refine the grain size and improve mechanical properties. Normalizing is done to give steel a uniform and fine-grained structure. Normalizing is often used for ferrous alloys that have been austenitized and then cooled in open air. Normalizing not only produces pearlite, but also bainite and sometimes martensite, which gives harder and stronger steel, but with less ductility than full annealing. The normalizing experiment in Materials Science lab is conducted by preparing a small sample of metal. The metal will be heated inside a small furnace up to a certain temperature and it is expected that upon heating the metal will have a uniform temperature thoughout the body. The hot metal is then cooled until its temperature is back to room temperature again. You will help to establish the normalizing experiment in by designing all necessary requirement, such as the following: - Decide the material type and size. - Decide the heating temperature and the heating time. - Determine the cooling time, i.e. up to room temperature. - Generate the heating and cooling charts, i.e (time vs temperature for each heating and cooling process). For the report, you have to show the assumptions taken, the properties of material, details of calculation, and other necessary engineering aspects.

Answer 1