Laser rapid manufacturing of special pattern Inco 718 nickel based alloy component

Minlin Zhong, Lin Yang, Wenjin Liu, Ting Huang, Jingjiang He

Research output: Contribution to journalConference articlepeer-review

12 Citations (Scopus)

Abstract

Laser rapid manufacturing based on laser cladding is a novel layer additive manufacturing technology, which can be well used for producing specific material, geometry and properties components normally unavailable or very costly by conventional methods. This paper presents a project research work on laser rapid manufacturing of Inco 718 nickel based alloy component with special pattern for aeronautical application. The required pattern Inco 718 nickel based alloy component was manufactured directly by laser deposition with optimized parameters: laser power: 800W, laser beam diameter: 0.8mm, scanning speed: 0.5m/min, powder feeding rate: 3g/min; The basic microstructure of laser deposited sample is directionally solidified columnar structure, with metallurgical bound to the substrate. Laser deposited component has good metallurgical and compositional and hardness homogeneity. The average hardness is about Hv0.2 440. The tensile strength of the laser deposited Inco 718 sample is respectively 121 and 116 kgf/mm2 at room temperature and at 650°C,which are a little bit less than the data of forged Inco 718 plate 142 and 127 kgf/mm2 due to its directional solidified columnar structure perpendicular to the tensile test force.

Original languageEnglish
Article number12
Pages (from-to)59-66
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5629
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventLasers in Material Processing and Manufacturing II - Beijing, China
Duration: 2004 Nov 102004 Nov 12

Keywords

  • Inco 718
  • Laser rapid manufacturing
  • Mechanical property
  • Microstructure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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