添加剂制造的Inconel 625合金在700°C的固态转化
Fan Zhang1, Jan Ilavsky2, Greta Lindwall3
1Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
概括
添加剂制造Inconel 625需要减轻压力. 将热处理降至700°C可以减少有害的三角洲阶段沉,为Inconel 625零件提供了一个有前途的替代品.
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.
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 625是一种基于的超级合金,对增材制造 (AM) 至关重要.
- 补充剂工艺在Inconel 625零件中引发了显著的残余应力.
- 标准的减压热处理 (800~870°C) 会导致有害的三角洲阶段沉.
研究的目的:
- 在700°C的AM Inconel 625中研究固态转化.
- 确定较低温度热处理对三角洲阶段降水的影响.
- 提供微结构动力学数据,以优化AM Inconel 625中的减压.
主要方法:
- 基于同步的现场散射和衍射.
- 外置电子显微镜. 在位电子显微镜.
- 热力学建模.热力学建模.
主要成果:
- 在AM Inconel 625中,三角形阶段降水发生在700°C时.
- 降水率和三角洲阶段的大小在700°C降低,而较高的温度则降低.
- 实验发现与热力学预测一致.
结论:
- 低温 (700°C) 减压热处理是AM Inconel 625的一个可行的选择.
- 在700°C下降的三角洲阶段降水减少了有害影响.
- 该方法可应用于其他AM合金.
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