Study on Deformation Behavior in Selective Laser Melting Based on the Analysis of the Melt Pool Data

Kai, 张凯 Zhang; Tingting, 刘婷婷 Liu; Changdong, 张长东 Zhang; Wenhe, 廖文和 Liao

doi:10.3788/cjl201542.0903007

Cited by 7 publications

(1 citation statement)

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“…The M2 has an Yb-fiber laser with a laser power providing up to 400 W with a 60 μm laser spot size, the wave length range is 1064-1100 nm. All process were completed in an Argon atmosphere with an oxygen content below 0.1% [10].…”

Section: Experiments Methods 21 Materials and Equipmentmentioning

confidence: 99%

Study on Deformation Behavior of Ti6Al4V Parts Fabricated by Selective Laser Melting

et al. 2018

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During the Selective laser melting process, the accumulation of the residual stress caused by the excessive temperature gradients and the rapid solidification is the main factor causing deformation; and the wetting quality of the meltpool also has an impact. How to control the deformation is the key problem to improve the quality of the parts. In this paper, the thin-wall specimens are divided into four distinct conditions, analyzing the meltpool date collected by the melting pool monitoring system and the simulation of temperature field, the relationship between the process parameters and the deformation under the same energy density is discussed. The results show that the temperature, the width and the intensity of the meltpool increase with the increasing of the laser power and the scanning speed, but the temperature gradients and the rate of the solidification of the meltpool are on the contrary, resulting in the decrease of the residual stress and the deformation of the part, which is help to improve the quality of the part.

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Section: Experiments Methods 21 Materials and Equipmentmentioning

confidence: 99%