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微观结构和IN690Ni基合金/316LN不钢不相似环接头的机械性能,通过惯性摩擦接接
Yiqi Tong1, Liangliang Zhang1, Chao Li1
1School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China.
Materials (Basel, Switzerland)
|April 9, 2024
概括
惯性摩擦接成功连接了Inconel 690和316LN的空洞条. 最佳参数增强了机械性能,通过机械互锁和扩散粘合实现了高拉伸强度和冲击性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 连接技术 连接技术
背景情况:
- 结合不相似的金属合金,如Inconel 690和316LN提出了重大挑战.
- 大直径空洞条应用需要强大而可靠的连接方法.
研究的目的:
- 调查使用惯性摩擦接 (IFW) 连接Inconel 690和316LN的可行性和特性.
- 分析接接头的界面微观结构,机械性能和断裂机制.
- 确定工艺参数对联合质量和性能的影响.
主要方法:
- 惯性摩擦接 (IFW) 用于连接Inconel 690和316LN的大直径空心条.
- 特性包括对界面特征,微观结构,抗拉强度和冲击性进行分析.
- 过程参数,如飞轮速度,摩擦压力和旋转惯性,都被系统地改变.
主要成果:
- IFW创建了具有机械互锁和金结合的接头,具有显著的机械混合区.
- 在混合区内观察到元素扩散,在摩擦表面上积聚碳.
- 随着接能量的增加,关节强度和性增加;优化的参数产生了高性能,达到Inconel 690抗拉强度的94%.
- 基肯德尔效应影响了粘合,在Inconel 690侧观察到优异的金粘合.
结论:
- 惯性摩擦接是一种可行的方法,用于连接Inconel 690和316LN的大直径空心条.
- 优化工艺参数,特别是摩擦压力,对于精制谷物结构和增强机械性能至关重要.
- 该研究为IFW生产的不同合金接头的连接机制和性能提供了宝贵的见解.
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