Measurement of residual stress in multitrack laser-clad coating

HU Mu-lin; XIE Chang-sheng; HUANG Kai-jin

In order to study cracking problem in multitrack laser-clad coating,model and method to measure the residual stress distributed along depth of laser-clad coating are established.Residual stress in the upper layer of multitrack overlapping laser-clad WF218 Nickle-based coating presents as tensile stress,while in the transition zone between coating and substrate,the residual stress presents as compressive stress.Test results show that this technique is helpful to characterize the residual stress distribution in laser-clad coating.

Corresponding author: HU Mu-lin, humulin@163.com;

1. National Laboratory of Plastic Forming Simulation and Mould Technology, Department of Materials Science and Engineering, HUST, Wuhan 430074, China

Received Date: 2005-05-19

Accepted Date: 2005-11-25

Available Online: 2006-05-25

Abstract: In order to study cracking problem in multitrack laser-clad coating,model and method to measure the residual stress distributed along depth of laser-clad coating are established.Residual stress in the upper layer of multitrack overlapping laser-clad WF218 Nickle-based coating presents as tensile stress,while in the transition zone between coating and substrate,the residual stress presents as compressive stress.Test results show that this technique is helpful to characterize the residual stress distribution in laser-clad coating.

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Reference (11)

[1]	DURANTON P,DEVAUX J,ROBIN V et al.3-D modeling of multipass welding of a 316L stainless steel pipe[J].Journal of Materials Processing Technology,2004,153～154:457～463.
[2]	YA M,MARQUETTE P,BELAHCENE F et al.Residual stresses in laser welded aluminum plate by use of ultrasonic and optical methods[J].Materials Science and Engineering,2004,382A(1～2):257～264.
[3]	FRICKE S,KEIM E,SCHMIDT J.Numerical weld modeling-a method for calculating weld-induced residual stresses[J].Nuclear Engineering and Design,2001,206(2～3):139～150.
[4]	GIANNAKOPOULOS S S.A new method for estimating residual stresses by instrumented sharp indentation[J].Acta Materialia,1998,46(16):5755～5767.
[5]	LI H,SUN L Z,LI J B et al.X-ray stress measurement and FEM analysis of residual stress distribution near interface in bonded ceramic/metal compounds[J].Scripta Materialia,1996,34(9):1503～1508.
[6]	PERRY A J,SUE J A,MARTIN P J.Practical measurement of the residual stress in coatings[J].Surface and Coatings Technology,1996,81(1～2):17～28.
[7]	LIU Sh H,ZHOU L Z,WAN P T.Investigation on laser induced thermal stress bending[J].Laser Technology,2001,25(4):258～262(in Chinese).
[8]	ZOU Sh K,WANG J,WANG H M et al.Fatigue growth rate of laser shock processed metal sheet[J].Laser Technology,2002,26(3):189～191(in Chinese).
[9]	IORDANNOVA I,FORCEY K S.Texture and residual stresses in thermally sprayed coatings[J].Surface and Coatings Technology,1997,91(3):174～182.
[10]	FRANCOIS M,PINA J,DIAS A et al.Residual stresses and crystallographic texture in hard-chromium electroplated coatings[J].Surface and Coatings Technology,1997,96(2～3):148～162.
[11]	HU M L.Study on the theory of materials consistency for laser cladding design[D].Wuhan:Huazhong University of Science & Technology,2001.21～24(in Chinese).

Measurement of residual stress in multitrack laser-clad coating

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References

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通讯作者: 陈斌, bchen63@163.com

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