38MnVS6钢中硫元素扩散对激光熔覆涂层形貌和组织的影响

Translated title of the contribution: Effect of Sulfur Diffusion in 38MnVS6 Steel on Morphology and Microstructure of Laser Cladding Layers

Ru Chen, Gang Yu*, Xiuli He, Zhengtao Gan, Shaoxia Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The laser cladding of CoCrW powder on 38MnVS6 steel substrate is conducted, and the effects of active elements in substrate on the morphology and microstructure of laser cladding layer are investigated. The results show that, when the powder feeding rate is 5.60 g•min-1 and the scanning speed is smaller than 5 mm•s-1, the melt pool of cladding layer is relatively deep and the fusion line of cladding layer and substrate is concave downwards. When the scanning speed is higher than 6 mm•s-1, the melt pool is relatively shallow and the fusion line is smooth. The increase of the powder feeding rate makes the change of cladding layer morphology. The sulfur content in substrate determines the temperature coefficient of surface tension, which changes the direction of Maragoni convection and thus influences the final compositions and microstructures of cladding layers.

Translated title of the contributionEffect of Sulfur Diffusion in 38MnVS6 Steel on Morphology and Microstructure of Laser Cladding Layers
Original languageChinese (Traditional)
Article number0602005
JournalZhongguo Jiguang/Chinese Journal of Lasers
Volume45
Issue number6
DOIs
StatePublished - Jun 10 2018

Keywords

  • Active elements
  • Laser cladding
  • Laser technique
  • Microstructure
  • Morphology

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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