首页|Irradiation hardening of advanced tungsten grades: An experimental and inverse finite element method study
Irradiation hardening of advanced tungsten grades: An experimental and inverse finite element method study
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier LtdThe effect of neutron irradiation on mechanical properties of various advanced W grades (pure, doped by K, alloyed by Re) was assessed by means of mechanical testing using miniaturized tensile and sub-miniaturized three-point bending (3PB) specimens. Different irradiation conditions in terms of temperature (400, 600, 800 and 1100 °C) and irradiation dose (0.2–0.25 dpa, 1.0–1.1 dpa) were considered. In order to extract the yield stress from the flexural load-displacement data, the empirical correlation between the flexural stress at a specific reference point on the flexural stress-strain curve and uniaxial tensile yield stress was established. The empirical ratio identified can be applied for the 3PB testing in a wide range of temperatures and plastic properties of un-irradiated and irradiated W alloys. The accuracy of the yield stress determination deduced using the empirical correlation from the 3PB tests was compared with the inverse FEM modelling procedure applied to the 3PB tests carried along with reference data extracted from the dedicated tensile tests. The information on the tensile yield stress and work hardening rate of all studied materials at different irradiation conditions was summarized and discussed in the view of the irradiation hardening.
DeformationFinite element methodFlexural stressInverse FEM modellingNeutron irradiationPlasticityThree-point bending testsTungsten alloysWork hardening rateYield stress
Bakaev A.、Terentyev D.、Zinovev A.、Zhurkin E.E.
展开 >
SCK CEN Nuclear Materials Science Institute
Peter the Great St.Petersburg Polytechnic University
NSTL
Elsevier
