Laser surface treatment of AISI 304 steel with the presence of B4C particles at the surface

B. S. Yilbas*, F. Patel, C. Karatas

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

14 Scopus citations

Abstract

AISI 304 steel surface is pre-prepared to form a thin carbon film containing 5% B4C particles prior to the laser-treatment process. The carbon film improved the absorption of the incident beam and accommodated B4C particles uniformly at the workpiece surface. The morphological and the metallurgical changes are examined in the treated layer by using optical and electron microscopes, energy dispersive spectroscopy, and X-ray diffraction. The microhardness and the residual stress formed at the treated surfaces are measured. It is found that the laser-treated surface is free from asperities and defect sites. The microhardness of the laser-treated surface increases significantly, which is attributed to the presence of B4C particles at the treated surface. In addition, the residual stress increases with the addition of B4C particles at the surface. The nitride phases are formed at the treated surface, which also contribute to the microhardness increase at the surface.

Original languageEnglish
Title of host publicationLaser Surface Engineering
Subtitle of host publicationProcesses and Applications
PublisherElsevier Inc.
Pages97-105
Number of pages9
ISBN (Electronic)9781782420798
ISBN (Print)9781782420743
DOIs
StatePublished - 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.

Keywords

  • AISI 304 steel
  • BC
  • Laser
  • Surface treatment

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy

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