Abstract A method was elaborated to measure the deformation of Zr alloy samples in-situ, during oxidation at high temperature (above 900 °C typically) and subsequent cooling. In addition, a model was developed to calculate the internal stresses generated within the multiphase and multilayered material oxidized at high temperature. Comparison of simulation and experimental results confirmed the benefit of making measurements in-situ rather than post-facto. It was shown that internal stresses generated during oxidation at high temperature are potentially very different from those reported for lower temperatures, due in particular to amplified diffusion of oxygen within the metal and increased viscoplasticity.

中文翻译：

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一种研究高温氧化锆合金氧化应力的方法

摘要 阐述了一种原位测量Zr合金样品在高温（通常为900°C以上）氧化和随后冷却过程中变形的方法。此外，还开发了一个模型来计算在高温下氧化的多相和多层材料内产生的内应力。模拟和实验结果的比较证实了现场测量而不是事后测量的好处。结果表明，高温氧化过程中产生的内应力可能与较低温度下所报道的内应力非常不同，特别是由于金属内氧的放大扩散和粘塑性增加。