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

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 st...

Full description

Saved in:
Bibliographic Details
Published inRussian metallurgy Metally Vol. 2021; no. 10; pp. 1265 - 1269
Main Authors Blinov, V. M., Lukin, E. I., Blinov, E. V., Samoilova, M. A., Seval’nev, G. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.10.2021
Springer Nature B.V
Subjects
Aging (metallurgy)
Austenitic stainless steels
Chemistry and Materials Science
Corrosion resistance
Corrosion resistant steels
Crack initiation
Crack propagation
Fracture mechanics
Materials Science
Metallic Materials
Nitrogen
Nucleation
Quenching
Steel
Structure and Properties of the Deformed State
overequilibrium nitrogen
strength
impact toughness
austenitic corrosion-resistant steel
phase composition
plasticity
quenching
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029521100062