In this work, 3-point bending tests and micro-hardness measurements were performed on pure tungsten irradiated with high-energy protons and spallation neutrons in a target of the Swiss Spallation Neutron Source (SINQ). The specimens were irradiated to doses in the range of 1.3–3.5 dpa, with 37–140 appm He, at temperatures between 75 and 110 °C. During 3-point bending tests performed at temperatures up to 500 °C, all the irradiated specimens fractured in the elastic regime at stresses much below those for the unirradiated reference specimens. The micro-hardness measurements indicate significant irradiation induced hardening under all irradiation conditions. Observation of the fracture surfaces of tested irradiated specimens shows brittle fracture behaviour in general, whereas detailed features depend strongly on irradiation dose and test temperature.

在这项工作中，在瑞士散裂中子源（SINQ）的目标上，对高能质子和散裂中子辐照的纯钨进行了三点弯曲测试和显微硬度测量。在75至110°C的温度下，将标本辐照到1.3–3.5 dpa范围内，氦气浓度为37–140 appm。在高达500°C的温度下进行的三点弯曲测试中，所有受辐照的试样均在弹性状态下断裂，其应力远低于未辐照的参考试样的应力。显微硬度测量表明在所有辐照条件下都有明显的辐照引起的硬化。观察测试辐照样品的断裂表面，通常显示出脆性断裂行为，