晶界类型对Ni-Mo-Cr合金不连续析出行为的影响
Effect of Grain Boundary Type on Discontinuous Precipitation in Ni-Mo-Cr Alloy
DOI: 10.12677/app.2026.165048, PDF,   
作者: 冯子龙*, 钟 艺, 谭 伟, 张晓娜#：北京工业大学材料科学与工程学院，北京
关键词: Ni-Mo-Cr合金；不连续析出相；晶界；Ni-Mo-Cr Alloy； Discontinuous Precipitated Phases； Grain Boundaries
摘要: 本文利用扫描电镜和透射电镜，对Ni-20Mo-10Cr (at.%)合金在不同类型晶界处的不连续析出行为进行了研究，分析了退火孪晶界和大角晶界处不连续析出相的特征。研究结果表明，Ni-20Mo-10Cr (at.%)合金在经过800℃/17h热暴露后在晶界和孪晶界处出现了不连续沉淀相。孪晶界处的不连续沉淀相呈针状，具有Mo、Cr元素的富集，大角晶界处的呈胞状组织，仅具有Mo元素的富集。
Abstract: In this paper, the discontinuous precipitation behavior of the Ni-20Mo-10Cr (at.%) alloy at different types of grain boundaries was investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The characteristics of discontinuously precipitated phases at annealing twin boundaries and high-angle grain boundaries were analyzed. The results show that after thermal exposure at 800˚C for 17 h, discontinuously precipitated phases appear at both grain boundaries and twin boundaries in the Ni-20Mo-10Cr (at.%) alloy. The discontinuously precipitated phase at twin boundaries exhibits a needle-like morphology and is enriched in Mo and Cr elements, while that at high-angle grain boundaries exhibits a cellular structure and is enriched only in Mo.
文章引用：冯子龙, 钟艺, 谭伟, 张晓娜. 晶界类型对Ni-Mo-Cr合金不连续析出行为的影响[J]. 应用物理, 2026, 16(5): 526-534. https://doi.org/10.12677/app.2026.165048

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