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Volume 22 Issue 1
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Citation:
shu

Effects of expansion coefficient of laser cladding layer on cracking sensitivity

  • 1.

    Department of Materials Science & Engineering, HUST, Wuhan, 430074;

  • 2.

    Wuhan University of Technolog, Wuhan, 430070

  • Received Date: 1996-07-05
  • After adjusting components of the Fe-Cr-Ni alloy powder whichis used to laser clad on 45 steel,we find that the expansion coefficient of clad layer and it's cracking sensitivity have been changed,and the cracking sensitivity decrease with lowering of expansion coefficient of clad layer.In this paper we discusse these results and point out that proper selecting the range of the difference of expansion coefficient between clad layer and substrate is beneficial to reduce cracking sensitivity of clad layer.
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  • [1]

    Dekumbis R.Cont relling residual stresses in laser clad coatings.LIM-6,Biminghan U.K.1989:May
    [2]

    Powell J.Steen W M.Vibro laser cladding.In:K.Mukherjee(ed) laser in metallurgy,New York:The metallurgical society of AIM E.1982:92
    [3] 宋武林,朱蓓蒂,甘翠华.et al.中国激光,1995;A22(4):309
    [4]

    Bull S J.Surface and coatings technology,1992;54/55:173
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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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Effects of expansion coefficient of laser cladding layer on cracking sensitivity

  • 1. Department of Materials Science & Engineering, HUST, Wuhan, 430074;
  • 2. Wuhan University of Technolog, Wuhan, 430070
  • Received Date: 1996-07-05
  • Available Online: 1998-01-25

Abstract: After adjusting components of the Fe-Cr-Ni alloy powder whichis used to laser clad on 45 steel,we find that the expansion coefficient of clad layer and it's cracking sensitivity have been changed,and the cracking sensitivity decrease with lowering of expansion coefficient of clad layer.In this paper we discusse these results and point out that proper selecting the range of the difference of expansion coefficient between clad layer and substrate is beneficial to reduce cracking sensitivity of clad layer.

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