What is first step involved in the process of preparing test sample for microstructural examination?
Right Answer is:
Sectioning is the first step involved in the process of preparing test samples for microstructural examination.
A microstructural examination utilizes inverted optical light for inspection of a material microstructure, grain sizing, and can provide clues to the origin of a metal failure.
Metallographic sample preparation is divided broadly into two stages. The aim of the first stage is to obtain a planar, specularly reflective surface.
This stage commonly comprises three or four steps
Sectioning: It is the first step involved in the process of preparing test samples for microstructural examination. various methods can be used for making microstructure samples including hand sawing, milling, laser cutting, water jet cutting wire electric discharge machining, etc. These operations alter the surface properties and microstructure of the sample.