The various metallographic tests are another way to obtain information about the properties of the metal or weld. These tests are essentially in the excision and subsequent careful polishing of the sample from the metal or welded seam. After such processing of the sample, it is possible to evaluate the metal with the naked eye or with the help of magnifying optics.
The metallographic tests usually refer to the macroscopic or microscopic group. The difference is the magnification used. The macrostructure tests are carried out Continue reading →