【摘要】 本文利用扫描电镜和透射电镜，对经过不同条件热暴露实验后的Ni-20Mo-10Cr(at.%)模型合金进行研究，分析析出TCP相的物相类型及元素分布，从而找到TCP相的析出规律。研究结果表明：样品经过900℃/3 h热暴露实验后析出μ相，EDS结果表明合金中产生Mo元素的富集，Cr元素并不富集。样品经过800℃/20 h+900℃/3 h热暴露实验后析出δ相，EDS结果表明合金中产生Mo元素和Cr元素的富集。更多还原

【Abstract】 The Ni-20Mo-10Cr(at. %) model alloy after thermal exposure experiments is studied by scanning electron microscope(SEM) and transmission electron microscope(TEM). The phase types and element distribution of TCP phase are analyzed to show the precipitation law of TCP phase. The result show that μ phase is precipitated after the sample is heated at 900 ℃ for 3 h. The EDS result show that the elemental Mo is enriched in μ phase, but the elemental Cr is not enriched in μ phase. δ phase is precipitated after the heat treatment process of 800 ℃ for 20 h and the succeeding thermal exposure at 900 ℃ for 3 h. Accordingly, EDS result show that Mo and Cr elements are enriched in δ phase.更多还原