实验研究和数值建模的跨通造在线弧增材制造的英科内尔718的数值建模
Oleg Yu Smetannikov1, Gleb L Permyakov1, Sergey D Neulybin1
1Department of Welding Production, Metrology and Technology of Material, Perm National Research Polytechnic University, 29 Komsomolsky Prospect, 614990 Perm, Russia.
Materials (Basel, Switzerland)
|January 10, 2026
概括
在Inconel 718的线弧增材制造 (WAAM) 过程中进行交叉造,改进了微观结构并增强了机械性能. 多个造通道提高了材料的强度,并在整个建造过程中保持了造效果.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 金工业是一种金工业.
背景情况:
- 电缆弧增材制造 (WAAM) 是Inconel 718的一个有前途的技术.
- 剩余应力和微结构控制是WAAM的关键挑战.
- 跨通造被探索为一个后加工步骤,以减轻这些问题.
研究的目的:
- 为了研究跨通造对WAAM Inconel 718的微观结构和机械性能的影响.
- 开发和验证一个有限元模型来模拟WAAM期间的交叉造.
- 分析造序列和通过次数对残余应力和应变的影响.
主要方法:
- 使用WAAM进行样本准备,并采用不同的跨度造策略 (单阶段,双阶段).
- 宏观结构分析检查谷物结构和再结晶.
- 机械测试用于评估抗拉强度,度强度和微硬度.
- 使用约翰逊-库克材料常数模拟热力学过程的有限元模型 (FEM).
主要成果:
- 跨通造促进了重新结晶的微观结构,交替的柱状和等轴粒.
- 增加造通道显著提高了拉伸强度,率强度和微硬度.
- FEM准确地预测了实验结果 (在15%的偏差范围内).
- 造过程中塑料变形深度超过融深度,确保效果积累.
- 造序列和通道对残余应变和位移有很大影响,但对残余应力影响最小.
结论:
- 跨通造是一种有效的方法来增强WAAM Inconel 718.18的性能.
- 开发的FEM提供了一个可靠的工具,用于预测跨通道造的影响.
- 优化造参数对于控制剩余应力和改善WAAM中的材料性能至关重要.
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