热喷涂金属材料的机械和微观结构性质在压缩试验中在广泛的应变率范围内进行压缩试验
Artur Wypych1, Tomasz Jankowiak2, Wojciech Sumelka2
1Institute of Materials Engineering, Poznan University of Technology, Jana Pawla II 24, 60-965 Poznan, Poland.
Materials (Basel, Switzerland)
|December 23, 2023
概括
这项研究揭示了一种新型弧线线涂料材料在静态和动态负载后显著增强,显示孔隙性降低和微硬度增加. 该材料有效吸收机械能量,在压力下保持凝聚力和一致性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 表面工程是什么?表面工程是什么?
背景情况:
- 热喷涂涂料对于提高材料性能至关重要.
- 了解各种负载条件下的新型涂料材料的机械行为,对于它们的应用至关重要.
- 弧线线涂层为材料沉积提供了一种独特的方法.
研究的目的:
- 为了研究一种新的弧线线涂料材料的机械行为.
- 为了评估材料对静态和动态负荷的反应,在广泛的延展率范围内.
- 为了分析微观结构的变化,多孔性和微硬度后加载.
主要方法:
- 在切割涂层样本上进行了静态和动态强度阻力测试.
- 对压缩行为进行了检查,应变速率从0.001 1/s到2612 1/s.
- 分裂霍普金森压力杆 (SHPB) 技术被用于研究动态负载效应.
- 进行了微结构分析,包括孔隙性和微硬度测量.
主要成果:
- 观察到涂层孔径的显著减少:静态负载后90%和动态负载后86%.
- 微硬度大幅增加:在静态负载后达到160 HV 0.3/8 ,在动态负载后达到278 HV 0.3/8 .
- 该材料在动态加载时表现出应变率敏感性,并保持凝聚力和一致性.
结论:
- 这种新型的弧线线涂料材料表现出增强的机械性能,包括增加的强度和硬度,由于孔径减少.
- 这些涂料具有显著的能量吸收能力,通过塑性变形和减少孔隙性来吸收能量.
- 这种新材料对在机械应力下要求强大的性能的应用非常有希望.
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