Microstructures in a Metal Intro

Microstructures in a Metal Intro - Hanna Richardson...

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Hanna Richardson Microstructures in a Metal Hanna Richardson
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Hanna Richardson Abstract The purpose of the experiment was to determine the properties of a material and how they are directly associated to the microstructure of the material. Grain size analysis can be used as an efficient way to predict the physical properties and the possible history of a material. In this laboratory experiment, we examined microstructures of steel nails. We reached flat, scratch-free, and mirror like surfaces through the process of rough grinding, fine grinding, polishing, and etching. We examined the sample results under the microscope to determine the grain size. Introduction The microstructure of a material can be used to identify physical properties of a material such as toughness, strength, ductility, hardness, corrosion resistance, high/low temperature behavior, or wear resistance. Microstructures in materials are generally defined as regions of different atomic or molecular ordering. It arises because of the way a material is prepared. The types and presence of microstructures in a material can be important in determining its mechanical, electrical, optical, and magnetic properties. Thus, knowing what microstructures are present are important in relating the nature of a material to its properties. Upon discovering the material’s microstructure, one can relate it to the properties of the materials.
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Hanna Richardson Microscopy is the visual study of objects that are too small to be seen by the naked eye, so microscopes can be used to see the microstructures in materials. Microscopy is a complementary field of study to that of diffraction in determining the structure of a material. Several types of microscopes are used in microscopy in materials science such as optical, scanning electron (SEM), transmission electron (TEM), scanning probe (SPM), and scanning tunnel (STM) microscopes. Each of these microscopes image a different size range, ranging from millimeters to nanometers. They also use different methods of imaging, including light, electrons, and atomic size needles.
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