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Volume 25 Issue 2
Sep.  2013
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Study on microstructure of laser cladding Co-base alloy on nuclear valve parts

  • 1.

    Department of Mechanical Engineering, Central-South Institute of Technology, Hengyang, 421001

  • Received Date: 1999-10-18
    Accepted Date: 2000-01-21
  • Laser cladding of Co-base alloy on the nuclear valve-sealing surface has been performed with a 5kW CO2 flow transverse laser.Optical microscope,SEM,and EDAX have been used to analyze the microstructure,the grain size,the micro-hardness,and the dilution rate.The results show that the microstructure,the grain size,the dilution rate,the width of heat-effect area,and the micro-hardness of the laser cladding coating are much better than those of the spurt welding and the bead welding processing.
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    [2] 王家金.激光加工技术.北京:中国计量出版社,1992
    [3] 陈天佐,李泽高.金属堆焊技术.北京:机械工业出版社,1991
    [4] 王国佑,王万智.钢的化学热处理.北京:中国铁道出版社,1998
    [5] 阎毓禾.高功率激光加工及其应用.天津:天津科学技术出版社,1994
    [6]

    Meijer J. CIRP, 1991;40(1):183～186
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Study on microstructure of laser cladding Co-base alloy on nuclear valve parts

  • 1. Department of Mechanical Engineering, Central-South Institute of Technology, Hengyang, 421001
  • Received Date: 1999-10-18
  • Accepted Date: 2000-01-21
  • Available Online: 2001-03-25

Abstract: Laser cladding of Co-base alloy on the nuclear valve-sealing surface has been performed with a 5kW CO2 flow transverse laser.Optical microscope,SEM,and EDAX have been used to analyze the microstructure,the grain size,the micro-hardness,and the dilution rate.The results show that the microstructure,the grain size,the dilution rate,the width of heat-effect area,and the micro-hardness of the laser cladding coating are much better than those of the spurt welding and the bead welding processing.

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