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

被引：0

作者：

Lindqvist, Sebastian ^{[1
]}

Kolluri, Murthy ^{[2
]}

Cinger, David ^{[3
]}

Zarazovskii, Maksym ^{[4
]}

Szabolcs, Szavai ^{[5
]}

Altstadt, Eberhard ^{[6
]}

机构：

[1] VTT Tech Res Ctr Finland, Ctr Nucl Safety, Espoo 02150, Finland

[2] NRG Nucl Res & Consultancy Grp, NL-1755 LE Petten, Netherlands

[3] HUN REN EK CER Ctr Energy Res, H-1121 Budapest, Hungary

[4] Ltd Liabil Co IPP Ctr, UA-01014 Kyiv, Ukraine

[5] BZN Bay Zoltan Nonprofit Ltd Appl Res, H-1116 Budapest, Hungary

[6] HZDR Helmholtz Zentrum Dresden Rossendorf EV, D-01328 Dresden, Germany

来源：

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2025年 / 214卷

关键词：

High fluence; Ni and Mn; Fracture toughness; Master curve; Homogeneity; REACTOR; TOUGHNESS;

D O I：

10.1016/j.ijpvp.2024.105421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees 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.

引用

页数：14