Crack reduction in Inconel 939 with Si addition processed by laser powder bed fusion additive manufacturing

Zhang, Bin; Ding, Hua; Meng, Andrew C.; Nemati, Saber; Guo, Shengmin; Meng, W. J.

doi:10.1016/j.addma.2023.103623

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…This structure is susceptible to segregation and inclusions at melt-pool boundaries due to rapid heat transfer during the laser heating process, resulting in stress concentrations and intergranular cracking. These issues are common in AM nickel-based alloys and contribute to hot cracking, along with other defects like balling, lack of fusion, and keyhole formation [12].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Vibro-Assisted Abrasive Processing on the Surface Roughness and Sub-Surface Microstructure of Inconel 939 Specimen Made by LPBF

Radziejewska,

Marczak,

Maj

et al. 2023

Materials

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This paper presents the research results on the influence of vibration abrasive machining parameters on the surface layer integrity of elements made by LPBF technology from Inconel 939. The research was carried out on samples of various sizes on vibrating smoothing machines. The influence of the size of the processed elements, the type of abrasive shapes, the processing time, and the supporting fluid on the surface roughness and microstructure of the processed elements was analyzed. Tests have shown that as a result of using vibration processing, it is possible to reduce the surface roughness five times to the value of Ra = 1.1 µm. A significant influence of the type of abrasive shapes was found. There was no significant effect of the machining fluid on the process.

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Section: Introductionmentioning

confidence: 99%