钒合金是典型的低活化材料,具有高温强度高和抗中子辐照尺寸稳定性好等许多优点,是未来核聚变堆结构材料的候选材料之一,同时也适合于有中子辐照的其它环境使用。但目前钒合金应用还存在氢环境中易发生氢脆断裂等缺点。国外普遍采用拉伸实验评价钒合金的氢脆行为,但在工程部件实际使用条件下,受力情况与评定有一定的差异。为此, Vanadium alloy is a typical low-activation material with many advantages such as high temperature strength and good anti-neutron irradiation dimensional stability. It is one of the candidate materials for future nuclear fusion reactor structural materials, and is also suitable for neutron irradiation Other environment use. However, there are still some shortcomings such as brittle fracture of hydrogen in hydrogen environment. Tensile tests are generally used to evaluate the hydrogen embrittlement behavior of vanadium alloys in foreign countries. However, under the actual conditions of engineering components, there is a certain difference in stress conditions and assessment. to this end,