从数字体积相关性中添加制造的AlSi10Mg中的3D细菌模式
Xinyang Gao1, Yubin Zhang1, Lasse Haahr-Lillevang2
1Department of Civil and Mechanical Engineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
Heliyon
|December 27, 2023
概括
这项研究揭示了X射线断层扫描和数字体积相关性如何可以测量AlSi10Mg中的微尺度应变,澄清变形机制. 这种技术使用富含的颗粒作为标记,以了解材料在压力下的行为.
科学领域:
- 材料科学与工程 材料科学与工程
- 增材制造 增材制造 增材制造
- 材料的机械行为
背景情况:
- 基于激光的粉床融合 (L-PBF) 是AlSi10Mg合金的关键添加剂制造技术.
- 在L-PBF加工AlSi10Mg中的微尺度材料变形机制仍然不太清楚.
- 基于表面的扫描电子显微镜 (SEM) 观测缺乏3D体积应变数据.
研究的目的:
- 开发和演示一个3D测量技术的微尺度应变场在散装AlSi10Mg.
- 提高对微观结构层面的材料变形和损伤机制的理解.
- 为研究微观结构特征对机械行为的影响提供一种方法.
主要方法:
- 使用X射线断层扫描来捕获热处理AlSi10Mg的3D微结构数据.
- 采用数字体积相关性 (DVC) 来量化体积应变场.
- 在微观结构中使用富Si的粒子作为DVC分析的自然标记.
主要成果:
- 成功地测量了AlSi10Mg散体中的应变场,空间分辨率为35μm.
- 该方法能够测量超过0.5%的菌株.
- 证明了在增材制造材料中使用X射线断层扫描和DVC进行微尺度菌株分析的可行性.
结论:
- 与DVC相结合的X射线断层扫描为在AlSi10Mg中表征微尺度变形提供了强大的工具.
- 这种技术可以阐明孔隙性和晶体纹理对材料变形和损坏的影响.
- 提升对L-PBF加工AlSi10Mg的理解,这对于优化材料性能和可靠性至关重要.
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