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Laser Surface Engineering by Jonathan R. Lawrence, David Waugh

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4

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

B.S. Yilbas1; F. Patel1; C. Karatas2    1 King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia2 Hacettepe University, Ankara, Turkey

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 ...

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