Reflectivity of 30CrMnSiA steel under continuous-wave laser repeated irradiation

Jin Yunsheng; Tan Fuli; Li Mu; Zhang Yongqiang; Zhao Jianheng

doi:10.3788/HPLPB20122412.2827

Volume 24 Issue 12

Nov. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(12): 2827-2830

Rao Huanle, Liu Zhengkun, Liu Ying, et al. Cerium oxide polishing to improve uniformity of diffraction efficiencyof beam sampling grating[J]. High Power Laser and Particle Beams, 2013, 25: 1609-1610. doi: 10.3788/HPLPB20132507.1609

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Jin Yunsheng, Tan Fuli, Li Mu, et al. Reflectivity of 30CrMnSiA steel under continuous-wave laser repeated irradiation[J]. High Power Laser and Particle Beams, 2012, 24: 2827-2830. doi: 10.3788/HPLPB20122412.2827

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Reflectivity of 30CrMnSiA steel under continuous-wave laser repeated irradiation

doi: 10.3788/HPLPB20122412.2827

1.
Institute of Fluid Physics,CAEP,P.O.Box 919-113,Mianyang 621900,China

Received Date: 2012-04-07
Rev Recd Date: 2012-06-08
Publish Date: 2012-11-05

Abstract

Abstract

The reflectivity characteristic of 30CrMnSiA steel under continuous-wave laser repeated irradiation is explored, by using the double-beam reflectivity measurement device. The reflectivity under only once laser irradiation is compared with that in the process of laser irradiation, cooling, laser re-irradiation. It is found that the reflectivity under the laser re-irradiation is basically the same with the reflectivity corresponding to the maximum temperature in the process of the first laser irradiation, and begins to change only when the temperature exceeds the maximum temperature, and the variation trend of the reflectivity under the laser re-irradiation is the same with that under only once laser irradiation. It indicates that the reflectivity on the surface is related to the maximum surface temperature. The further study results show that the maximum surface temperature could affect the surface oxide layer and the oxide layer thickness does not change in the cooling and re-irradiation process.
- high-power laser,
- reflectivity,
- repeated loading,
- 30CrMnSiA steel

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