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Volume 27 Issue 2
Sep.  2013
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Citation:
shu

Study on 18Cr2Ni4W steel treated by carburizing and laser transformation hardening

  • 1.

    Laser Processing Laboratory, Department of Mechanical Engineering, Changchun University of Science and Technology, Changchun, 130022;

  • 2.

    National Laboratory of Materials Modification, Dalian University of Technology, Dalian, 116023

  • Received Date: 2002-05-08
    Accepted Date: 2002-07-29
  • The experiment that 18Cr2Ni4W steels were treated by carburizing and laser transformation hardening was carried out. The microst ructure of the treated steel was studied in detail by SEM,TEM and image analyzer. The results show that the microstructure obviously varies with the change of depth in laser hardened zone;the large amount of residual austenite is produced due to existence of ally elements in the steel during laser transformation hardening,which decrease surface hardness;with the scanning speed going up,the hardness is increased.
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  • [1] 闫毓禾,钟敏霖. 高功率激光及其应用. 天津:天津科技出版社,1994:90～111.
    [2]

    Howes M A.Surface Engineering,1987(7):91～104.
    [3] 李俊昌.激光热处理优化控制研究.北京:冶金工业出版社,1995:1～2.
    [4] 关振中.激光加工工艺手册.北京:中国计量出版社,1998:133～134.
    [5]

    Hu J D,Li Zh,Wang Y F et al.Mater Sci Technol,1992(8):796.
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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 18Cr2Ni4W steel treated by carburizing and laser transformation hardening

  • 1. Laser Processing Laboratory, Department of Mechanical Engineering, Changchun University of Science and Technology, Changchun, 130022;
  • 2. National Laboratory of Materials Modification, Dalian University of Technology, Dalian, 116023
  • Received Date: 2002-05-08
  • Accepted Date: 2002-07-29
  • Available Online: 2003-03-25

Abstract: The experiment that 18Cr2Ni4W steels were treated by carburizing and laser transformation hardening was carried out. The microst ructure of the treated steel was studied in detail by SEM,TEM and image analyzer. The results show that the microstructure obviously varies with the change of depth in laser hardened zone;the large amount of residual austenite is produced due to existence of ally elements in the steel during laser transformation hardening,which decrease surface hardness;with the scanning speed going up,the hardness is increased.

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