Fragmentation of Nonmetallic Inclusions during Local Remelting upon Laser Steel Processing

In this paper, we study the features of partial dissolution and contact melting of nonmetallic inclusions under conditions of anomalous mass transfer that promotes their fragmentation in the surface layer of hardened steel products. The mechanisms and conditions for laser melting of inclusions, mech...

Full description

Saved in:
Bibliographic Details
Published inSteel in translation Vol. 50; no. 3; pp. 203 - 208
Main Authors Gubenko, S. I., Nikul’chenko, I. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.03.2020
Springer Nature B.V
Subjects
Chemistry and Materials Science
Contact melting
Fragmentation
Laser beam melting
Laser processing
Lasers
Mass transfer
Materials Science
Melting
Nonmetallic inclusions
Solidification
Steel products
Surface layers
steel
melting
laser processing
fragmentation
nonmetallic inclusions
Online AccessGet full text

Cover

More Information
Summary:In this paper, we study the features of partial dissolution and contact melting of nonmetallic inclusions under conditions of anomalous mass transfer that promotes their fragmentation in the surface layer of hardened steel products. The mechanisms and conditions for laser melting of inclusions, mechanical destruction of solid and liquid inclusions, and the formation of satellite particles are discussed. Inclusion fragmentation upon laser processing is shown to determine the steel hardening level. Based on a study of fast melting and solidification, laser processing changes the structure and properties of nonmetallic inclusions in the surface hardened layers of steel products. The use of the obtained results will allow the development of laser processing modes, thus affecting the size, structure, distribution and content of nonmetallic inclusions in the hardened layers of the products.
ISSN:0967-0912
1935-0988
DOI:10.3103/S0967091220030043