Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling

Ren, Guanhui1,2,3,4; Guo, Sai1,2; Zhang, Bi1,2

2023-01-16

10.1186/s10033-022-00827-9

Chinese Journal of Mechanical Engineering   Impact Factor & Quartile

1000-9345

2192-8258

This study is concerned with the surface integrity of Inconel 738LC parts manufactured by selective laser melting (SLM) followed by high-speed milling (HSM). In the investigation process of surface integrity, the study employs ultra-depth three-dimensional microscopy, laser scanning confocal microscopy, scanning electron microscopy, electron backscatter diffractometry, and energy dispersive spectroscopy to characterize the evolution of material microstructure, work hardening, residual stress coupling, and anisotropic effect of the building direction on surface integrity of the samples. The results show that SLM/HSM hybrid manufacturing can be an effective method to obtain better surface quality with a thinner machining metamorphic layer. High-speed machining is adopted to reduce cutting force and suppress machining heat, which is an effective way to produce better surface mechanical properties during the SLM/HSM hybrid manufacturing process. In general, high-speed milling of the SLM-built Inconel 738LC samples offers better surface integrity, compared to simplex additive manufacturing or casting.

Surface integrity Inconel 738LC Selective laser melting High-speed milling

SCI

English

First ; Corresponding

Engineering

Engineering, Mechanical

WOS:000912980900001

SPRINGER

2-s2.0-85146268848

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
2.Shenzhen Key Lab Addit Mfg High performance Mat, Shenzhen 518055, Peoples R China
3.Shenzhen Xinjinquan Precis Techonol Co Ltd, Res & Dev Dept, Shenzhen 518055, Peoples R China
4.Shandong Univ, Sch Mech Engn, Jinan 250061, Peoples R China

Ren, Guanhui,Guo, Sai,Zhang, Bi. Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling[J]. Chinese Journal of Mechanical Engineering,2023,36(1).

Ren, Guanhui,Guo, Sai,&Zhang, Bi.(2023).Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling.Chinese Journal of Mechanical Engineering,36(1).

Ren, Guanhui,et al."Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling".Chinese Journal of Mechanical Engineering 36.1(2023).