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[41610] Artykuł: IMPACT STRENGTH OF GX8CrNi12, GX5CrNi18-9 AND GX5CrNiMo19-11-2 CAST STEEL AT-30 degrees CCzasopismo: Metalurgija Tom: 55, Zeszyt: 4, Strony: 745-748ISSN: 0543-5846 Wydawca: CROATIAN METALLURGICAL SOC, BERISLAVICEVA 6, ZAGREB, CROATIA Opublikowano: 2016 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science) Punkty MNiSW: 15 Klasyfikacja Web of Science: Article ![]() Keywords: alloying cast steel  Charpy energy  microstructure  fracture  |
The results of impact tests carried out at - 30 degrees C on cast alloyed GX8CrNi12, GX5CrNi18-9 and GX5CrNiMo19-11-2 steel grades are reported. It has been shown that at - 30 degrees C, the addition of 1 % Ni to cast GX8CrNi12 steel does not provide the required impact strength of 35 J/cm(2). In contrast, other tested materials containing 8 divided by 9 % Ni can easily reach exceeding 50 J/cm(2). Numerous non-metallic inclusions present in the microstructure of cast GX5CrNi-Mo19-11-2 steel resulting from, among others, the miscalculated refining process were found to be one of the main causes of reduced impact strength as compared to the cast GX5CrNi18-9 steel.