Microfractography of static tensile tests fractures of 1.4539 austenitic steel and 1.4742 ferritic steel welded joints

摘要

The paper presents the results of microfractography of static tensile test fractures of welded joints of 1.4539 austenitic steel and 1.4742 ferritic steel utilized for chemical installations production. The tested types of steel resistant to corrosion indicated two different types of fracturing. In case of ferritic steel, it was brittle fracturing on the boundaries of grains, whereas, in case of austenitic steel it was plastic fracturing.