Effect of Nanosecond Ultraviolet Laser Radiation on the Structure and Adhesion Properties of Metals and Alloys

Mikolutsky, S. I.; Khomich, Yu. V.

doi:10.1134/s0031918x21020083

Cited by 9 publications

(1 citation statement)

References 10 publications

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“…In particular, laser treatment of a number of metals with frequency-pulsed ultraviolet (UV) radiation of nanosecond duration made it possible to increase the adhesion properties of a number of metals, which increased the quality of their diffusion welding [16][17][18][19][20][21]. Such processing consisted of impact the material surface to scanning frequency-pulse radiation of suprathreshold power.…”

Section: Introductionmentioning

confidence: 99%

Features of Brass Processing with Powerful Ultraviolet Lasers of Nanosecond Duration

Kaplunov

Malinsky

Mikolutskiy

et al. 2022

MSF

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We investigated the process of laser heat treatment of polished brass samples (36% zinc, containing a small amount of lead, which does not dissolve in the alloy and is in the form of inclusions, having micron and submicron size) by impacting to a series of 25 - 30 ultraviolet (UV) pulses of a Nd:YAG laser (third harmonic, wavelength λ = 355 nm, duration τ = 10 ns, pulse repetition rate f = 10 Hz, pulse energy density ~ 0.15 - 1.0 J/cm2) in the stationary spot mode. Copper and its alloys absorb up to 90% of the energy of this laser. It is found that the relaxation of the absorbed energy of laser radiation in the metal occurs nonuniformly. Defects in the metal structure such as grain boundaries and lead inclusions are visualized. Traces of crystallographic sliding appear inside some grains. With an increase in the number of impacting impulses, accumulation of damage is observed. A further increase in the radiation energy density leads to an aggravation of the observed phenomena.

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