Abstract
We present the results of microfractographic investigations of static tensile tests for welded joints of the 1.4539 austenitic and 1.4742 ferritic steels used for the production of chemical installations. The tested types of corrosion-resistant steels reveal two different types of fracture. In the case of ferritic steel, we observe brittle transcrystalline fracture on the grain boundaries, whereas the austenitic steel is characterized by plastic fracture.
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