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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Tensile test of hydrided Zircaloy
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Tensile test of hydrided Zircaloy

机译：氢化锆合金的拉伸试验

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摘要

In order to examine the influence of precipitated zirconium hydride on the failure behavior and fracture strength of light water reactor (LWR) cladding tubes, tensile tests were performed at room temperature for non-hydrided and hydrided Zircaloy sheet-type specimens with gauge section of 10.0 X 5.0 mm and thicknesses of 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 mm. For specimens with thickness more than 2.5 mm, the ultimate tensile strength of the specimens appeared to be independent of thickness, which implied that plane strain condition was attained. For the specimen with 2.5 mm thickness, the ultimate tensile strength increased slightly with increasing average hydrogen concentration. Through microscopic observation of the hydrided specimen surface by scanning electron microscopy (SEM), it was found that matrix/hydride debonding was not generated but that micro-cracks perpendicular to the axial direction were produced at the hydride layer.
机译：为了检查沉淀的氢化锆对轻水反应堆（LWR）熔覆管的破坏行为和断裂强度的影响，在室温下对规格为10.0的非氢化和氢化Zircaloy片状样品进行了拉伸试验X 5.0毫米，厚度为0.5、1.0、1.5、2.0、2.5和3.0毫米。对于厚度大于2.5 mm的试样，试样的极限抗拉强度似乎与厚度无关，这意味着达到了平面应变条件。对于厚度为2.5 mm的样品，极限抗拉强度随平均氢浓度的增加而略有增加。通过扫描电子显微镜（SEM）对水合标本的表面进行显微镜观察，发现没有发生基体/氢化物的剥离，但是在氢化物层上产生了垂直于轴向的微裂纹。

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