Thermal stability and oxidation behavior of nanostructured Ni-Al alloys with a high fraction of low angle grain boundaries
收藏中国科学院兰州化学物理研究所科学数据中心2025-12-19 更新2026-01-10 收录
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资源简介：
Conventional nanocrystalline dominated by high angle grain boundaries (HAGBs) possesses excellent oxidation
resistance in air but poor thermal stability. Low angle grain boundaries (LAGBs) can improve its thermal stability, but effect on oxidation behavior is unclear. In this work, a nanolaminated Ni-7 wt% Al alloy with grain size
of 56 nm and 85 % fraction of LAGBs was prepared, exhibiting higher thermal stability than conventional
nanocrystalline at 800 ◦C. Its oxidation resistance is superior to coarse-grained alloy, but inferior to the HAGBsrich nanograins due to lower diffusion coefficient of LAGBs. This provides guidance for designing thermally
stable and oxidation-resistant nanostructured alloys.
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2025-12-19
