Mimicking irradiation-induced cracking of nuclear graphite using bromine intercalation
Mimicking irradiation-induced cracking of nuclear graphite using bromine intercalation
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使用溴插层模拟核石墨的辐照诱导开裂
DOI：
10.1016/j.scriptamat.2021.113889
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发表时间：
2021
影响因子：
6
通讯作者：
Bodel W
中科院分区：
文献类型：
--
作者：
Bodel W
石墨慢化核反应堆中键槽根部开裂和辐解重量损失可能限制民用核舰队未来的成功运行。提出了一种利用内应力引发断裂的新方法，即利用溴的插层作用在小尺寸石墨样品中引发断裂。在1：10比例的反应器组件中成功地实现了裂纹的萌生和扩展。在溴化过程中，原位X射线计算机断层扫描能够在真实的时间内观察到失效，从而确定断裂和重量损失过程中微观结构的作用。裂纹路径预测模型进行了评估。
Keyway root cracking and radiolytic weight loss in graphite moderated nuclear reactors may limit future successful operation of the civil nuclear fleet. A novel means of initiating fracture using internally generated stresses has been developed, which uses bromine intercalation to induce fracture in small graphite samples. Successful crack initiation and propagation has been achieved in 1:10 scale reactor components.In situX-ray Computed Tomography during bromination has enabled observations of failure in real time, allowing the role of microstructure during fracture and weight loss to be determined. Crack paths predicted by models have been assessed.