Master curve reference temperature behavior of steels with varying Ni/Mn content and subjected to a fluence of 11·1019 neutron/cm2

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping Pub Date : 2024-12-24 DOI:10.1016/j.ijpvp.2024.105421

Sebastian Lindqvist , Murthy Kolluri , David Cinger , Maksym Zarazovskii , Szavai Szabolcs , Eberhard Altstadt

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引用次数: 0

Abstract

The degradation of fracture toughness due to irradiation needs to be understood to assess the structural integrity of reactor pressure vessels for long-term operation. The level of degradation is dependent on the chemical content, particularly of elements like Ni and Mn. The fracture toughness properties for three types of steels (i.e. VVER-1000 steel, western model steel and VVER-1000 welds) with varying contents of Ni and Mn were characterized based on Master Curve T₀ reference temperature in reference condition and in irradiated condition. The results show that, in the high fluence region, the shifts in T₀ correlate with the content of Ni and Mn, and the scatter in fracture toughness is mostly consistent for the reference and irradiated conditions. At higher T₀ values, above 75 °C, T_41J gives an increasingly larger estimate compared to T₀. The obtained results can be applied to develop new improved embrittlement trends curves for NPP lifetime assessment.

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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.