Modification of Plasma Spurt Spraying on Improving Fatigue Property of Welded Joint

Xiao Hui Zhao; Yu Liu

doi:10.4028/www.scientific.net/AMM.556-562.494

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 556-562Modification of Plasma Spurt Spraying on Improving...

Modification of Plasma Spurt Spraying on Improving Fatigue Property of Welded Joint

Abstract:

The present paper introduces a modification method of welded joint, plasma spurt spraying (MPSS), for improving the fatigue life of welding structure. Nickel-base alloy powder was used to spray the welded joint of Q235B steel. The high cycle fatigue tests of specimens treated by MPSS were carried out to obtain the S-N curves. Meanwhile, numerical simulation was performed to obtain the residual stress field after spraying. Test results show that the fatigue strength of welded joint by MPSS is higher than that of as-welded joint. Based on the test results and simulation results, it can be concluded that MPSS improves fatigue strength mainly through the decrease of stress concentration and residual stress.

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Periodical:

Applied Mechanics and Materials (Volumes 556-562)

Pages:

494-497

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.556-562.494

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Online since:

May 2014

Authors:

Xiao Hui Zhao, Yu Liu*

Keywords:

Fatigue, Fusion, Numerical Simulation, Weld

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* - Corresponding Author

References

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