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热输入和轨道间重叠对Inconel 686接重叠的微观结构和性能的影响
Seyedmohammad Tabaie1, Zahra Khodamoradi1, Trevor Greene2
1School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada.
Materials (Basel, Switzerland)
|July 13, 2024
概括
使用Inconel 686优化超合金接层对于采矿设备的完整性至关重要. 通过控制稀释和微分离,中级热输入和1/2轨道重叠产生了优越的硬度和微观结构.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是一种金工业.
- 腐蚀工程 腐蚀工程
背景情况:
- 采矿和矿物加工设备面临极端温度和腐蚀性条件.
- 超合金接层对于在恶劣环境中保持设备完整性至关重要.
- 合金686是一种关键的Ni-Cr-Mo超合金,用于保护性覆盖.
研究的目的:
- 调查接过程参数对Inconel 686接覆盖物质的影响.
- 确定输入热量,轨道重叠,稀释和微观结构之间的关系.
- 优化接覆层参数,以提高采矿应用中的硬度和完整性.
主要方法:
- 自动气体金属弧与受控的热输入 (弧电压,行驶速度).
- 不同的相邻接轨道重叠百分比 (例如1/2,1/3).
- 使用几何和化学分析量化稀释;通过SEM分析微观结构和微硬度.
主要成果:
- 减少轨道重叠增加了接稀释,最高为13.63% (1/2重叠) 和15.39% (1/3重叠).
- 更高的热量输入和稀释与增加的Mo和Cr微分离和Mo/Cr丰富相位形成相关.
- 在接条件,金结果 (树突间距,微分离,相位形成) 和覆盖硬度之间建立了强烈的联系.
结论:
- 采矿应用的最佳Inconel 686接覆盖是在中级热输入 (4-5kJ·cm-1) 和1/2轨道重叠的情况下实现的.
- 控制接参数可以有效地控制稀释和微分离,从而提高覆盖层硬度.
- 这项研究为优化接覆盖策略提供了一个框架,以提高采矿设备的寿命.
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