Journal
OPTICS AND LASER TECHNOLOGY
Volume 64, Issue -, Pages 227-234Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2014.05.015
Keywords
Steel; Laser remelting; Microstructure
Categories
Funding
- Project 985-High Performance Materials of Jilin University
- National Natural Science Foundation of China [51005097, 51275200]
- Project 985-Bionic Engineering Science and Technology Innovation
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In this study, the surface of H13 steel was treated using laser surface remelting. Some important characteristics of the treated zone (biomimetic strengthening units) were investigated, e.g. size, cross-sectional morphology, microstructure and hardness as functions of average peak power density and effective peak power density. The results indicate that different combinations of average peak power density and effective peak power density could vary the appearance of cross-sectional morphology, microstructure and hardness. An appropriate range of EPPD for preparing the treated zone was acquired: 595-1448 W/mm(2). In this range, the depth/width ratio of 0.31-0.47 and microhardness of 559-667 HV were obtained. (C) 2014 Elsevier Ltd. All rights reserved.
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