通过微光束X射线光光谱学对Inconel 718超合金元素分离的定量表征及其相关性研究
Xuefan Zhou1,2, Dongling Li2,3, Qingqing Zhou1,2
1Beijing Advanced Innovation Centre for Materials Genome Engineering, Central Iron and Steel Research Institution, Beijing 100081, China.
Materials (Basel, Switzerland)
|November 25, 2023
概括
微束X射线光精确地描述了Inconel 718 (IN718) 超合金中的元素微分离. (Nb) 和 (Ti) 显示出最高的分离度,特别是在沉物附近.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 分析化学 分析化学
背景情况:
- 718 (IN718) 是一个基于的超合金,由于其优越的机械和耐腐蚀性,它是航空航天和核工业的关键超合金.
- 造过程中的异质固化导致IN718中的元素分离,对机械性能产生负面影响.
- 准确地描述微分离对于理解和减轻这些影响至关重要.
研究的目的:
- 在IN718超级合金中量化表征元素微分离.
- 为了确定关键合金元素 (Cr,Fe,Mo,Nb,Ti) 的度分布.
- 为了将微分离模式与微观结构特征相关联.
主要方法:
- 使用微束X射线光 (μ-XRF) 进行定量元素微分离分析.
- 优化了IN718合金的μ-XRF测试参数.
- 使用扫描电子显微镜 (SEM) 与能量分散谱法 (EDS) 来分析微观结构和沉分布.
主要成果:
- 确定Cr,Fe,Mo,Nb和Ti的度分布和计算分离度.
- 确定了Nb和Ti作为与其他元素相比显著更高的分离度的元素.
- 在积累了含Nb沉的地区观察到Nb和Ti的严重分离.
结论:
- μ-XRF是IN718中定量微分离分析的有效技术.
- Nb和Ti分离与含有Nb的沉物的存在和分布密切相关.
- 了解这种相关性对于控制IN718合金属性至关重要.
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