The laser direct deposition iron-based alloy coating with high wear resistance

DOI

10.2991/icmmbe-16.2016.51How to use a DOI?

Keywords

laser direct deposition; iron-based alloys; wear-resistant coatings

Abstract

Using Fe55 spherical fluxed alloy power as the raw material, a Fe-based alloy coating on the surface of steel was deposited by a semiconductor laser under the optimal process parameters. The microstructure and properties of the samples were analyzed by means of OM, SEM, XRD, the micro-hardness and frictional testers. The experimental results showed that a high chromium Fe-based coating with metallurgical bonded on the substrate was deposited using the optimized process parameters with the laser power of 1900W; the spot size of 6mm×4mm, the scanning speed of 5mm/s, and the overlapping ratio of 30%. The thickness of the coatings without cracks and porous was 4 mm. The microstructure of the coating was mainly cellular and dendrite crystal. The phases of the coatings are composed of -(Fe, Ni) solid solution, Fe-Cr-Ni, Cr-Fe-B solid solution, and Cr23C6 particles. The microhardness of the coating rised to 750HV which was 4 times that of Q235 steel substrate with hardness of 175HV, the wear resistance was 27 times that of the steel substrate.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Suiyuan Chen
AU  - Hui Li
AU  - Lamei Liu
AU  - Jing Liang
AU  - Changsheng Liu
PY  - 2016/09
DA  - 2016/09
TI  - The laser direct deposition iron-based alloy coating with high wear resistance
BT  - Proceedings of the6th International Conference on Mechatronics, Materials, Biotechnology and Environment (ICMMBE 2016)
PB  - Atlantis Press
SP  - 259
EP  - 263
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmbe-16.2016.51
DO  - 10.2991/icmmbe-16.2016.51
ID  - Chen2016/09
ER  -