Application of the small-punch test to irradiated reactor vessel steels in the brittle-ductile transition region

被引：4

作者：

Linse, T. ^{[1
]}

Kuna, M. ^{[1
]}

Schuhknecht, J. ^{[2
]}

Viehrig, H.-W. ^{[2
]}

机构：

[1] TU Bergakademie Freiberg, Institute of Mechanics and Fluid Dynamics, Freiberg, 09596

[2] Forschungszentrum Dresden Rossendorf, Institute of Safety Research, Department of Material and Component Safety, Dresden, 01328

来源：

Journal of ASTM International | 2008年 / 5卷 / 04期

关键词：

D O I：

10.1520/JAI101008

中图分类号：

学科分类号：

摘要：

In this paper, a method is applied for the identification of hardening parameters in the brittleductile transition region and the determination of Weibull parameters in the brittle region using small-punch tests. A small-punch-test device is developed to measure the load-displacement curve for non-irradiated and irradiated specimens of a reactor vessel steel at different temperatures inside a hot cell. In a global optimization algorithm for the identification of hardening properties, time-consuming finite element method (FEM) calculations are avoided by using neural networks that were trained with the help of a database previously generated by FEM. Identified material properties are compared with data from tensile tests, where available. The influence of irradiation and temperature on the material and fracture behavior is analyzed. Copyright © 2008 by ASTM International.

引用

共 18 条

[1]

Mananan M., Argon A., Harling O., The development of a miniaturized disc bend test for the determination of postirradiation mechanical properties, J. Nucl. Mater., 104, pp. 1545-1550, (1981)

[2]

Mao X., Takahashi H., Kodaira T., Estimation of mechanical properties of irradiated nuclear pressure vessel steel by use of subsized ct specimen and small punch specimen, Scripta Metallurgica et Materialia, 25, 11, pp. 2487-2490, (1991)

[3]

Catherine C.S., Messier J., Poussard C., Rosinski S., Foulds J., Small punch test: EPRI-CEA finite element simulation benchmark and inverse method for the estimation of elastic plastic behavior, ASTM Special Technical Publication, 1418, pp. 350-370, (2002)

[4]

Abendroth M., Kuna M., Determination of deformation and failure properties of ductile materials by means of the small punch test and neural networks, Comput. Mater. Sci, 28, 3-4, pp. 633-644, (2003)

[5]

Campitelli E.N., Spatig P., Bertsch J., Hellwig C., Assessment of irradiation-hardening on Eurofer97' and Zircaloy 2 with punch tests and finite-element modeling, Materials Science and Engineering A, 400-401, 1-2 SUPPL., pp. 386-392, (2005)

[6]

Beremin F.M., Local criterion for cleavage fracture of a nuclear pressure vessel steel, Metallurgical Transactions. A, Physical Metallurgy and Materials Science, 14 A, 11, pp. 2277-2287, (1983)

[7]

Mudry F., A local approach to cleavage fracture, Nucl. Eng. Des., 105, pp. 65-76, (1987)

[8]

Linse T., Kuna M., Schuhknecht J., Usage of the Small-Punch-Test for the Characterisation of Reactor Vessel Steels in the Brittle-Ductile Transition Region, (2006)

[9]

Linse T., Kuna M., Schuhknecht J., Viehrig H.-W., Usage of the small-punch-test for the characterisation of reactor vessel steels in the brittle-ductile transition region, Engineering Fracture Mechanics, 75, 11, pp. 3520-3533, (2008)

[10]

Abendroth M., Kuna M., Identification of ductile damage and fracture parameters from the small punch test using neural networks, Engineering Fracture Mechanics, 73, 6, pp. 710-725, (2006)

← 1 2 →