How to sample for metallographic analysis of components
When developing a sampling plan for an unfamiliar part or component, the sampling direction should be determined based on the original rolling direction or casting pouring position, and cut along the expected longitudinal, transverse, same plane, radius direction, etc. to reveal the required information. It should be noted that the microstructure of the cross-section appears more uniform than that of the longitudinal section. If the raw material is not completely recrystallized after cold working or Hot working, the grain structure shown on the cross section
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