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Updated: Jan 9, 2026

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Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
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基于的复合涂料的机械性能分析,由激光覆盖制备
Shaoping Hu1, Longfeng Sun2, Yanchong Gao1
1School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China.
Materials (Basel, Switzerland)
|December 11, 2025
概括
在EA4T钢上激光覆盖IN718合金需要谨慎的扫描策略. 优化相对于拉伸方向的扫描方向可以改善机械性能并减少复合涂料的缺陷.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 表面工程是什么?表面工程是什么?
背景情况:
- 激光涂层可以创建复合涂层,在基板和涂层之间具有不相似的材料特性.
- 性能不匹配可能导致裂纹和变形,需要机械性能分析.
研究的目的:
- 调查IN718合金激光涂在EA4T钢上的机械性能 (微硬度,耐磨性,抗拉强度).
- 分析扫描策略对外质量和拉伸性能的影响.
- 确定拉伸和扫描方向之间的关系,以了解异构性.
主要方法:
- 在EA4T钢基板上对IN718合金进行激光涂层.
- 复合涂料的微硬度,耐磨性和抗拉强度测试.
- 在与扫描方向相对的不同角度进行拉伸测试,以评估异构性.
主要成果:
- 该研究揭示了扫描方向对拉伸性能影响的明显模式.
- 确定了IN718覆盖层的异性特征.
- 根据所需的覆盖厚度和拉伸性能,确定了最佳的扫描策略.
结论:
- 将扫描方向与拉伸方向平行对齐,对于薄薄的覆盖层来说是最佳的.
- 对齐扫描方向垂直于拉伸方向对于更厚的覆盖层是有益的.
- 结果提供了高性能激光覆盖的理论基础和工艺指导.
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