New Italian standard for the creep assessment of martensitic steels

Article type: Research Article

Authors: Tonti, A.^a | Delle Site, C.^a | Campanile, L.^{b; †;}

Affiliations: [a] Department of Technological Innovations and Safety of Plants, Products and Anthropic Settlements (Dit), INAIL Research Area, Rome, Italy | [b] Freelance Business, Rome, Italy

Correspondence: [*] Corresponding author: L. Campanile, Freelance, ex-INAIL, Department of Technological Innovations and Safety of Plants, Products and Anthropic Settlements (Dit), INAIL Research Area, Rome, Italy. Tel.: +39 3881803319; E-mail: [email protected]

Note: [†] Formerly affiliated with: Department of Technological Innovations and Safety of Plants, Products and Anthropic Settlements (Dit), INAIL Research Area, Rome, Italy.

Abstract: For the evaluation of the fraction of life consumed due to creep damage in martensitic materials, unlike what happens for ferritic materials for which there is a consolidated method, there are currently several usable methods. Therefore, laboratory tests and in-depth microstructural analyses were carried out on Grade 91 and 92 steels for the realization of a reference atlas on microstructural modification and precipitates state evolution during isothermal ageing and thermal creep.

Keywords: Martensitic steel, metallographic replica, XRD, SFM, neutron diffraction

DOI: 10.3233/SFC-228005

Journal: Strength, Fracture and Complexity, vol. 15, no. 1, pp. 59-77, 2022