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Fractographic Analysis of Brinar 400 and Brinar 500 Steels in Impact Testing
Beata Białobrzeska1, Łukasz Konat1, Robert Jasiński1
1Department of Materials Science, Welding and Strength of Materials, Wrocław University of Technology, Wrocław, Poland.
Abstract:
Properties of low-alloy boron-containing steels Brinar 400 and Brinar 500 in as-delivered and normalized conditions are considered. Charpy tests carried out within temperature ranges of ductile-to-brittle transition were followed by fractographic analysis. The tests were carried out on specimens with their axes parallel and perpendicular to hot-working direction, at -40°C, -20°C, 0°C, and +20°C. The determined impact properties of Brinar steels were complemented with fractographic analysis performed with use of a scanning electron microscope. It was found that temperatures of ductile-brittle transition were significantly different for the materials in as-delivered and normalized conditions. In addition the tensile tests were carried out, determining basic strength properties of the analyzed materials.
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