轨迹策略对WAAM技术中的材料特性的影响
Tran Minh The Uyen1, Pham Son Minh1, Van-Thuc Nguyen1
1HCMC University of Technology and Education, Ho Chi Minh City 71307, Vietnam.
Micromachines
|July 8, 2023
概括
该研究表明,螺旋轨迹优化了低碳钢的线弧增材制造 (WAAM),提高了拉伸强度和可塑性等性能. 其他轨迹带来了多样化的结果,斜斜的齐格扎格路径显示了适度的收益.
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
- 金工业是金工业的一个方面.
背景情况:
- 电弧增材制造 (WAAM) 是一种先进的3D打印技术.
- 了解轨迹对材料性能的影响对于WAAM优化至关重要.
研究的目的:
- 调查不同的打印轨迹如何影响WAAM生产的低碳钢的微观结构和机械特性.
- 确定WAAM低碳钢元件中优质材料性能的最佳轨迹.
主要方法:
- 对四种不同的打印轨迹进行比较分析:螺旋式,曲式,水平式,曲线式.
- 评估微观结构特征 (颗粒大小,形态) 和机械性能 (UTS,延长,弹性模量).
- 使用扫描电子显微镜进行断裂表面分析,以评估柔性.
主要成果:
- 螺旋轨迹 (策略3) 导致了最细的颗粒大小和最高的UTS (616.5MPa,增加24%) 和延长 (47.2%).
- 曲曲折轨迹 (策略2) 产生了最大的颗粒大小,但可与原始电线相比较的弹性模量.
- 所有WAAM样本都表现出带有的柔性骨折行为,表明了良好的性.
结论:
- 螺旋轨迹被确定为WAAM低碳钢的最佳轨迹,显著提高了拉伸强度和柔性.
- 轨迹显著影响热量输入/输出,影响颗粒大小和机械性能.
- 与基线材料相比,WAAM处理在UTS和延伸方面提供了显著的改进.
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