著作(論文等)

Basic information

Name YOSHIMURA Toshihiko

論文名

Processing of magnesium alloy by energy-intensive multifunction cavitation in a strong magnetic field with laser light excitation and associated sonoluminescence

著者名

Toshihiko Yoshimura, Tomoya Noda, Masataka Ijiri

掲載誌名等

Results in Materials

掲載年月

2023-03

18

100391

開始頁

1

 

 

終了頁

11

出版者(日本語)

 

出版者(英語)

ELSEVIER

発表形態

Research paper

概要

This work developed a novel metal processing technique referred to as laser-assisted magnetic energy-intensive multifunction cavitation. This technology employs a strong magnetic field to focus bubble energy while applying sonic radiation around a waterjet cavitation jet. Individual bubbles in the cavitation cloud undergo repeated isothermal expansion and adiabatic compression, raising the temperature and pressure of the bubbles. In addi-tion, the presence of a magnetic field over the region between the nozzle exit and the cavitation cloud in which cavitation primarily occurs greatly increases the number and energy density of charged bubble collisions based on the Lorentz force acting between the bubbles. The application of laser light to the charged bubble cloud provides multiphoton excitation that increases the charges of the ions within each bubble, leading to more active collisions. This enhanced cavitation treatment technology was applied to AZ31B magnesium alloy and was found to improve the functionality of the metal.