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Effects of minor alloying elements added in simulated cladding on lattice thermal expansion
Journal of Nuclear Materials ( IF 3.1 ) Pub Date : 2021-08-08 , DOI: 10.1016/j.jnucmat.2021.153240
Jeong Min Ha 1 , Sangjune Park 1 , Eunseo Kwon 1 , Dong Woo Lee 2 , Tae Hyun Kwon 1 , Jeong-Woo Nam 1 , Jeongmook Lee 2, 3 , Jong-Yun Kim 2, 3 , Hangil Lee 4 , Sang Ho Lim 2, 3 , Young-Sang Youn 1
Affiliation  

This study explored the crystallographic characterization of zirconium, zirconium-based samples containing minor alloying elements, simulated Zircaloy-4, and simulated ZIRLO at a temperature range of 30–870 °C using in situ high-temperature X-ray diffraction. The results from Pawley refinement demonstrated that the lattice thermal expansion along the a-axis direction is suppressed by the tin element, in contrast to the other minor alloying elements. Moreover, the simulated ZIRLO possesses the enhanced resistance for lattice thermal expansion compared to the simulated Zircaloy-4, indicating that a ZIRLO cladding has a better performance in suppressing the change in the lattice constants under a thermal environment.



中文翻译:

模拟包层中添加微量合金元素对晶格热膨胀的影响

本研究使用原位高温 X 射线衍射30–870 °C 的温度范围内探索了锆、含有少量合金元素的锆基样品、模拟 Zircaloy-4 和模拟 ZIRLO 的晶体学表征。Pawley 精修的结果表明,与其他次要合金元素相比,锡元素抑制了沿a轴方向的晶格热膨胀。此外,与模拟的 Zircaloy-4 相比,模拟的 ZIRLO 具有增强的晶格热膨胀阻力,表明 ZIRLO 包层在抑制热环境下晶格常数变化方面具有更好的性能。

更新日期:2021-08-25
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