A comprehensive comparison of creep-fatigue life assessment through leading industrial codes

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping Pub Date : 2025-03-04 DOI:10.1016/j.ijpvp.2025.105497

Younes Belrhiti , Cory Hamelin , Pierre Lamagnère , David Knowles , Mahmoud Mostafavi

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Abstract

Creep-fatigue damage has been recognized as a critical failure mode for high-temperature structures. In fusion power reactors, plasma-facing components endure complex loading conditions, resulting in high thermomechanical stresses. These components, often made from 316L material, joined to ferritic-martensitic steels, face significant challenges due to the interaction of various loads affecting their material properties and structural integrity. This paper compares internationally recognized methods for creep-fatigue assessment: the R5 procedure and the RCC-MRx code.

The study evaluates the differences and similarities in creep-fatigue assessments between these procedures, providing a global overview and a detailed comparison. The conservatism of both approaches are assessed by comparing the material properties dataset, total strain calculations, and lifetime estimates for 316L at 550 °C. Additionally, the welding assessment approaches of RCC-MRx and R5 are compared and applied to similar metal welds (316L-to-316L). Further, dissimilar Electron Beam Welded metals (316L-to-10CrMo9-10) are prepared, investigated and characterized using creep-fatigue experiments to compare the predicted service life using RCC-MRx.

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来源期刊

International Journal of Pressure Vessels and Piping 工程技术-工程：机械

CiteScore

5.30

自引率

13.30%

发文量

208

审稿时长

17 months

期刊介绍： Pressure vessel engineering technology is of importance in many branches of industry. This journal publishes the latest research results and related information on all its associated aspects, with particular emphasis on the structural integrity assessment, maintenance and life extension of pressurised process engineering plants. The anticipated coverage of the International Journal of Pressure Vessels and Piping ranges from simple mass-produced pressure vessels to large custom-built vessels and tanks. Pressure vessels technology is a developing field, and contributions on the following topics will therefore be welcome: • Pressure vessel engineering • Structural integrity assessment • Design methods • Codes and standards • Fabrication and welding • Materials properties requirements • Inspection and quality management • Maintenance and life extension • Ageing and environmental effects • Life management Of particular importance are papers covering aspects of significant practical application which could lead to major improvements in economy, reliability and useful life. While most accepted papers represent the results of original applied research, critical reviews of topical interest by world-leading experts will also appear from time to time. International Journal of Pressure Vessels and Piping is indispensable reading for engineering professionals involved in the energy, petrochemicals, process plant, transport, aerospace and related industries; for manufacturers of pressure vessels and ancillary equipment; and for academics pursuing research in these areas.