Dendritic deformation modes in additive manufacturing revealed by operando x-ray diffraction
Dendritic deformation modes in additive manufacturing revealed by operando x-ray diffraction
复制标题
原位 X 射线衍射揭示增材制造中的枝晶变形模式
DOI：
10.1038/s43246-023-00404-0
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发表时间：
2023
影响因子：
7.8
通讯作者：
Moridi, Atieh
中科院分区：
文献类型：
--
作者：
Dass, Adrita;Tian, Chenxi;Pagan, Darren C.;Moridi, Atieh
金属增材制造过程中的动态凝固行为直接影响打印部件的构建微观结构、缺陷和机械性能。这些特征的形成是如何由温度变化驱动的（例如，热梯度大小和凝固前沿速度）在金属增材制造中已经被广泛研究，同步加速器X射线成像成为监控这些过程的关键工具。在这里，我们将这些努力扩展到通过在激光熔化过程中使用操作X射线衍射来监测凝固过程中的完全热机械变形。与操作衍射，我们分析了热机械变形模式，如扭转，弯曲，破碎，同化，振荡，和枝晶间生长。理解这些现象可以帮助优化印刷策略，以获得特定的微观结构特征，包括局部取向差，位错亚结构和晶界特征。事后电子背散射衍射分析支持的解释操作衍射结果。
Dynamic solidification behavior during metal additive manufacturing directly influences the as-built microstructure, defects, and mechanical properties of printed parts. How the formation of these features is driven by temperature variation (e.g., thermal gradient magnitude and solidification front velocity) has been studied extensively in metal additive manufacturing, with synchrotron x-ray imaging becoming a critical tool to monitor these processes. Here, we extend these efforts to monitoring full thermomechanical deformation during solidification through the use of operando x-ray diffraction during laser melting. With operando diffraction, we analyze thermomechanical deformation modes such as torsion, bending, fragmentation, assimilation, oscillation, and interdendritic growth. Understanding such phenomena can aid the optimization of printing strategies to obtain specific microstructural features, including localized misorientations, dislocation substructure, and grain boundary character. The interpretation of operando diffraction results is supported by post-mortem electron backscatter diffraction analyses.
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影响因子：
4.6
作者：
V. Thampy;A. Fong;N. Calta;Jenny Wang;Aiden A. Martin;P. J. DePond;Andrew M. Kiss;G. Guss;Q. Xing;R. Ott;Anthony W. van Buuren;M. Toney;J. Weker;M. Kramer;M. Matthews;Christopher J. Tassone;K. Stone
通讯作者：
V. Thampy;A. Fong;N. Calta;Jenny Wang;Aiden A. Martin;P. J. DePond;Andrew M. Kiss;G. Guss;Q. Xing;R. Ott;Anthony W. van Buuren;M. Toney;J. Weker;M. Kramer;M. Matthews;Christopher J. Tassone;K. Stone
使用时间分辨 X 射线衍射原位观察不锈钢焊缝凝固
DOI：
--
发表时间：
2006
期刊：
影响因子：
--
作者：
M. Yonemura;T. Osuki;H. Terasaki;Y. Komizo;Masugu Sato;A. Kitano
通讯作者：
A. Kitano
DOI：
10.1007/s11661-017-4304-6
发表时间：
2017-11-01
影响因子：
2.8
作者：
Lass, Eric A.;Stoudt, Mark R.;Ng, Daniel S.
通讯作者：
Ng, Daniel S.
影响因子：
64.8
作者：
Martin, John H.;Yahata, Brennan D.;Pollock, Tresa M.
通讯作者：
Pollock, Tresa M.
影响因子：
4.6
作者：
Schneiderman B;Chuang AC;Kenesei P;Yu Z
通讯作者：
Yu Z