Stability of Structure and Properties of Nitrogen High-Strength Austenitic Steels Under Cyclic Thermal and Mechanical Loads

• Published in: Metal science and heat treatment Vol. 61; no. 1-2; pp. 3 - 9
• Main Authors: Kaputkina, L. M., Smarygina, I. V., Svyazhin, A. G., Kindop, V. E., Blinov, E. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2019; Springer; Springer Nature B.V
• Subjects: Austenitic stainless steels; Bend strength; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Cyclic loads; Dilatometry; Engineering Thermodynamics; Fatigue tests; Heat and Mass Transfer; High strength; High-Strength Steels; Magnetic measurement; Materials Science; Mechanical properties; Metallic Materials; Metals (Materials); Specialty metals industry; Steel structures; Structural stability; Thermal cycling; thermal stability; nitrogen chromium-nickel-manganese austenitic steels; cyclic loading; mechanical stability; structure; mechanical properties
• ISSN: 0026-0673; 1573-8973
• DOI: 10.1007/s11041-019-00368-4

Stability of the structure and mechanical properties of high-strength cryogenic nonmagnetic steels 10Kh19G10N6AM2 and 09Kh19G10N6AM2D2 under long-term thermocycling and multicycle mechanical loading is investigated. The mechanical properties of the steels are determined by measuring the HV hardness and testing for tensile strength and impact bending. The phase compositions and the structures of the steels are studied by dilatometry, magnetometry and x-ray diffractometry after various impacts (thermocycling, fatigue loading, and final testing for determination of mechanical properties).