Details

Autor(en) / Beteiligte

• Blinov, V. M.
• Lukin, E. I.
• Blinov, E. V.
• Samoilova, M. A.
• Seval’nev, G. S.

Titel

Tensile Fracture of Austenitic Corrosion-Resistant Steels with an Overequilibrium Nitrogen Content and Various Vanadium Contents

Ist Teil von

• Russian metallurgy Metally, 2021-10, Vol.2021 (10), p.1265-1269

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2021

Quelle

SpringerLink

Beschreibungen/Notizen

• The crack growth characteristics are investigated in situ in a scanning electron microscope column during the tension of nonmagnetic 04Kh18AG20 steel specimens with a overequilibrium nitrogen content (0.98 wt % N) and various vanadium contents. The character of crack nucleation and propagation in steel after quenching from 1200°С and after subsequent aging at 650°С for 5 h is shown to be the same. The critical shear crack size at the maximum load is 300 μm in vanadium-free 04Kh18AG20 steel and 120 μm in vanadium-bearing 04Kh18AG20F steel. Corrosion-resistant nickel and vanadium-free austenitic 04Kh18AG20 steel (0.98 wt % N) after quenching from 1200°C is recommended for heavy-duty nonmagnetic structures.