In-situ characterization of metal laser additive manufacturing using a laser-driven X-ray source

Wen Jiaxing; Guo Hang; Wu Sixin; Zhu Tao; Zeng Gaojie; Peng Mao; Fan Sijie; Ye Hansheng; Gong Qiang; Wei Lai; Fan Quanping; Xiang Xiangjun; Li Song; Wang Shaoyi; Yang Yue; Wei Jianmeng; Wang Hao; Zheng Yinlong; Shen Xianfeng; Qian Jiayi; Zhu Jiacheng; Zhang Zongxin; Wu Yuchi; Wang Wentao; Xu Yi; Huang Shuke; Zhao Zongqing

doi:10.11884/HPLPB202537.250191

Volume 37 Issue 7

Jul. 2025

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Article Navigation > High Power Laser and Particle Beams > 2025 > 37(7): 071001

Wen Jiaxing, Guo Hang, Wu Sixin, et al. In-situ characterization of metal laser additive manufacturing using a laser-driven X-ray source[J]. High Power Laser and Particle Beams, 2025, 37: 071001. doi: 10.11884/HPLPB202537.250191

Citation:

Wen Jiaxing, Guo Hang, Wu Sixin, et al. In-situ characterization of metal laser additive manufacturing using a laser-driven X-ray source[J]. High Power Laser and Particle Beams, 2025, 37: 071001. doi: 10.11884/HPLPB202537.250191

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In-situ characterization of metal laser additive manufacturing using a laser-driven X-ray source

doi: 10.11884/HPLPB202537.250191

1.
Laser Fusion Research Center, CAEP, Mianyang 621900, China
2.
Institute of Mechanical Manufacturing Technology, CAEP, Mianyang 621900, China
3.
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

Received Date: 2025-06-15
Accepted Date: 2025-07-08
Rev Recd Date: 2025-07-08

Available Online: 2025-07-11

Publish Date: 2025-07-09

Abstract

Abstract

Pore defects in metal laser additive manufacturing (AM) typically originate and evolve within the melt pool, exhibiting microscopic and highly transient characteristics. High spatiotemporal resolution X-ray imaging provides a powerful tool for in situ characterization of these processes, which is essential for understanding defect formation mechanisms and optimizing processing parameters. In this study, a high spatiotemporal resolution X-ray imaging technique tailored for metal laser AM was developed utilizing Betatron radiation generated by an ultra-intense, ultrashort pulsed lasers. This technique was employed to perform in-situ characterization of micro-melt pools under various processing conditions. The results show that the Betatron X-ray source allows real-time imaging of melt pool and keyhole dynamics in metal samples with thicknesses on the order of hundreds of micrometers, achieving a spatial resolution of 4 μm. These findings provide a solid foundation for the future application of laser-driven X-ray sources in investigating defect formation mechanisms and advancing process optimization in metal laser AM.
- metal laser additive manufacturing,
- Betatron radiation,
- X-ray imaging,
- in-situ characterization,
- keyhole

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References(9)

References

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