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25CrMo4钢的激光粉床融合:工艺参数对金和机械性能的影响
Agnieszka Kublińska1, Damian Dzienniak1, Maciej Sułowski2
1Department of Manufacturing Systems, Faculty of Mechanical Engineering and Robotics, AGH University of Krakow, A. Mickiewicza 30, 30-059 Krakow, Poland.
Materials (Basel, Switzerland)
|December 11, 2025
概括
优化3D打印参数,如激光功率和扫描速度,对于提高25CrMo4钢的机械性能至关重要. 适当的能量密度可以提高强度,减少缺陷,从而实现先进的增材制造应用.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 3D打印,特别是基于激光的金属粉末床融合 (PBF-LB/M),为25CrMo4.4等高强度钢提供了新的制造途径.
- 了解工艺参数对材料性能的影响对于可靠的增材制造至关重要.
研究的目的:
- 研究关键3D打印参数对25CrMo4钢的金和机械特性的影响.
- 建立能量密度输入和材料性能指标之间的相关性.
主要方法:
- 使用PBF-LB/M制造25CrMo4钢样品,具有不同的激光功率,扫描速度和层厚度.
- 分析体积能量密度 (VED) 和线性能量密度 (LED) 对材料性能的影响.
主要成果:
- 在打印参数 (VED,LED) 和包括硬度,多孔性,曲强度,压力强度和拉伸强度在内的性能之间观察到强烈的相关性.
- 优化VED和LED导致密度提高和缺陷减少.
- 过度的能量输入导致了脆弱性增加.
结论:
- 微调3D打印参数对于实现25CrMo4钢的所需机械性能至关重要.
- 高强度钢的增材制造可以通过精确控制能量密度来推进.
- 这些发现支持3D打印25CrMo4钢在高要求行业的扩大应用.
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