Science & Technology Review >

2020 , Vol. 38 >Issue 2: 19 - 25

DOI: https://doi.org/10.3981/j.issn.1000-7857.2020.02.003

Exclusive: New materials of superalloy and advanced materials preparation technology

Progress on application of selective laser melting in preparation of cobalt-based superalloy

  • CHEN Chaoyue ,
  • WANG Xiaodong ,
  • WANG Jiang ,
  • REN Zhongming
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  • 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
    2. State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200444, China

Received date: 2019-12-19

  Revised date: 2020-01-06

  Online published: 2020-04-01

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Abstract

The Cobalt-based superalloy enjoys a high strength and a good heat and corrosion resistance, with a wide range of applications in biomedicine, aerospace and other fields. In recent years, the rapid development of the additive manufacturing technology represented by the selective laser melting technology (SLM) has provided new possibilities for the processing and the application of high-temperature alloys such as the cobalt-based superalloys. Compared with the traditional processing methods, the additive manufacturing technology has many advantages, such as the customization, the fairly easy processing of complex structural parts and the short manufacturing cycle. This paper reviews the applications of the selective laser melting (SLM) technology in the preparation of the cobalt-based superalloys, as well as the tests for the density and mechanical properties, and the influence of the process parameters on the density, the hardness and other mechanical properties such as the roughness, the tensile strength. In order to meet the actual use demand, the postprocessing might be needed and the influence of the postprocessing should be considered.

Key words： cobalt-based superalloy; selective laser melting; laser additive manufacturing

Cite this article

CHEN Chaoyue , WANG Xiaodong , WANG Jiang , REN Zhongming . Progress on application of selective laser melting in preparation of cobalt-based superalloy[J]. Science & Technology Review, 2020 , 38(2) : 19 -25 . DOI: 10.3981/j.issn.1000-7857.2020.02.003

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