Journal of Nuclear Materials ( IF 3.1 ) Pub Date : 2020-11-19 , DOI: 10.1016/j.jnucmat.2020.152681 Avinash Gopalan , A.K. Bind , Saurav Sunil , T.N. Murty , R.K. Sharma , Akanksha Samanta , Amit Soren , R.N. Singh
The effect of radial hydride on the room temperature fracture toughness of the Zr-2.5Nb pressure tube material with 100% radial hydrides and hydrogen content up to 320wppm was investigated using curved compact tension (CCT) specimens. The hydride continuity coefficients (HCC) representing hydrogen content and hydride orientation were determined between 0 and 1. It was observed that the role of plastic deformation on the fracture toughness mechanism decreases with increase in HCC. On a semi-log scale the fracture toughness of the Zr-2.5Nb pressure tube varied linearly with HCC at room temperature and this is characteristic feature for the Zirconium alloys.
中文翻译:
径向氢化物对Zr-2.5Nb压力管材料室温断裂韧性的影响
使用弯曲压缩张力(CCT)样品研究了径向氢化物对含100%径向氢化物和氢含量高达320wppm的Zr-2.5Nb压力管材料的室温断裂韧性的影响。确定代表氢含量和氢化物取向的氢化物连续性系数(HCC)在0和1之间。观察到,塑性变形对断裂韧性机理的作用随着HCC的增加而降低。在半对数尺度上,Zr-2.5Nb压力管的断裂韧性在室温下随HCC线性变化,这是锆合金的特征。