Features of Brass Processing with Powerful Ultraviolet Lasers of Nanosecond Duration-Reference-Cited by-同舟云学术

Features of Brass Processing with Powerful Ultraviolet Lasers of Nanosecond Duration

Published:2022-01-11 Issue: Volume:1049 Page:11-17
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Kaplunov Ivan¹,Malinskiy Taras²^ORCID,Mikolutskiy S.I.³,Rogalin Vladimir³,Khomich Yuriy³^ORCID,Zheleznov Vladislav³^ORCID,Ivanova Aleksandra¹^ORCID

Affiliation:

1. Tver State University

2. Institute for Electrophysics and Electric Power RAS

3. Institute for Electrophysics and Electric Power of the RAS

Abstract

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.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.1049.11.pdf

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