Effect of heat treatment on the microstructure of Co–Cr–W alloy fabricated by laser additive manufacturing
作者: Bo RenChangjun ChenMin Zhang
作者单位: 1Soochow University
刊名: Optical Engineering, 2018, Vol.57 (4), pp.041409-041409
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.OE.57.4.041409
关键词: Laser additive manufacturingHeat treatmentCoCrWMicrostructure
原始语种摘要: Stellite 6 cobalt-based alloy powder was used to produce Co–Cr–W alloy using laser additive manufacturing technology, and then different heat treatment strategies were carried out on the deposited sample. The characteristics of microstructure under different heat treatment conditions were investigated using scanning electron microscopy with energy dispersive spectroscopy, transmission electron microscope, and x-ray diffraction. The results show that the as-deposited sample has few cracks or pores, and the microstructure is typical dendritic structure, and lamellar eutectic carbides are rich in Cr in interdendritic. The matrix mainly consists of γ phases and a few ϵ phases. Some γ phases transform into ϵ phases after 900°C/6 h aging treatment and lamellar eutectic carbides transform into...
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  • manufacturing 制造
  • Cr 
  • additive 添加剂
  • fabricated 制造
  • microstructure 微结构
  • treatment 处理
  • alloy 合金
  • transform 变换
  • laser 激光
  • interdendritic 枝晶间的