Chinese Journal of Mechanical Engineering >

2023 , Vol. 36 >Issue 1: 5 - 5

DOI: https://doi.org/10.1186/s10033-022-00827-9

Intelligent Manufacturing Technology

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

  • Guanhui Ren ,
  • Sai Guo ,
  • Bi Zhang
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  • 1. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
    2. Shenzhen Key Laboratory for Additive Manufacturing of Highperformance Materials, Shenzhen 518055, China;
    3. Research and Development Department, Shenzhen Xinjinquan Precision Techonology Co., Ltd., Shenzhen 518055, China;
    4. School of Mechanical Engineering, Shandong University, Jinan 250061, China

收稿日期: 2021-10-10

  修回日期: 2022-10-11

  网络出版日期: 2023-12-20

基金资助

Supported by Shenzhen Municipal Science and Technology Innovation Commission Projects (Grant Nos. Y01336107, JCYJ20180504165824643, GJHZ20180411143506667, JC YJ20170817111811303 and KQTD20190929172505711)

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

  • Guanhui Ren ,
  • Sai Guo ,
  • Bi Zhang
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  • 1. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
    2. Shenzhen Key Laboratory for Additive Manufacturing of Highperformance Materials, Shenzhen 518055, China;
    3. Research and Development Department, Shenzhen Xinjinquan Precision Techonology Co., Ltd., Shenzhen 518055, China;
    4. School of Mechanical Engineering, Shandong University, Jinan 250061, China

Received date: 2021-10-10

  Revised date: 2022-10-11

  Online published: 2023-12-20

Supported by

Supported by Shenzhen Municipal Science and Technology Innovation Commission Projects (Grant Nos. Y01336107, JCYJ20180504165824643, GJHZ20180411143506667, JC YJ20170817111811303 and KQTD20190929172505711)

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摘要

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 ultradepth 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.

关键词： Surface integrity; Inconel 738LC; Selective laser melting; High-speed milling

本文引用格式

Guanhui Ren , Sai Guo , Bi Zhang . 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) : 5 -5 . DOI: 10.1186/s10033-022-00827-9

Abstract

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 ultradepth 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.

Key words： Surface integrity; Inconel 738LC; Selective laser melting; High-speed milling

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