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Study on Laser-Selective Melting Forming Process of 316L/IN718 Mixed Powder

  • YANG Xuan ,
  • HAN Bao-hong ,
  • HE Wan-heng ,
  • ZHANG Dun-xu
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  • Department of Vehicle and Electrical Engineering, Shijiazhuang Campus, Army Engineering University, Shijiazhuang 050000,China

Received date: 2022-12-01

  Revised date: 2023-01-15

  Accepted date: 2023-02-14

  Online published: 2023-07-14

Abstract

In order to obtain high-density 316L/IN718 mixed metal powder parts, the forming process of 316L/IN718 mixed metal powder was investigated by single fusion channel experiments, single layer experiments and block experiments, based on laser-selective melting (SLM) technology with different laser scanning speeds and scanning pitchs, respectively. Results showed that when 0.54 J/mm ≤ laser line energy density (L) ≤ 0.76 J/mm in a single melt experiment, the effect of melt forming is relatively good. When the laser power (P)=200 W, scanning speed (v) = 280 mm/s, and scanning pitch = 0.12 mm, the blocks with a density of 99.99% could be obtained. Besides, the laser energy density-relative density relationship was obtained by fitting. The process research presented application and promotion value, providing important experimental data and technical support for achieving forming gradient functional materials.

Cite this article

YANG Xuan , HAN Bao-hong , HE Wan-heng , ZHANG Dun-xu . Study on Laser-Selective Melting Forming Process of 316L/IN718 Mixed Powder[J]. Materials Protection, 2023 , 56(5) : 133 -138 . DOI: 10.16577/j.issn.1001-1560.2023.2001

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