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GH169合金是目前应用广泛的高温合金。由于其中γ′相和δ相的化学稳定性非常相近,不易用化学法定量分离,因此其定量分析一直是没有完全解决的难题。本文在用正交实验探讨GH169合金二次相最佳电解条件的基础上,将电解提取与X衍射择优取向校正多峰定量相分析法(MPQ法)相结合,应用开发的MPQ定量相分析软件,对GH169合金的γ′+γ″相和δ相进行了定量分析,得出热处理温度为650～800℃,时效时间为50～100 h(其中650℃为5～500 h)的相变规律,将其与金相分析结果相比较,两者相互吻合。
GH169 alloy is the most widely used high temperature alloy. Because the chemical stability of γ ’phase and δ phase is very similar and it is difficult to quantitatively separate them by chemical methods, the quantitative analysis has not been a complete solution. In this paper, the orthogonal experiment was used to study the optimal electrolysis conditions of the secondary phase of GH169 alloy. Combined with the MPQ method, the MPQ method was applied to the electrolytic extraction and X-ray diffraction analysis. The developed MPQ quantitative phase analysis software , The γ ’+ γ "phase and δ phase of GH169 alloy were quantitatively analyzed, and the phase transformation laws of the heat treatment temperature of 650-800 ℃ and the aging time of 50-100 h (650-600 ℃ for 5-500 h) were obtained. , Compared with the results of metallographic analysis, the two coincide with each other.