The laser direct deposition iron-based alloy coating with high wear resistance
- 10.2991/icmmbe-16.2016.51How to use a DOI?
- laser direct deposition; iron-based alloys; wear-resistant coatings
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.
- © 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/).
Cite this article
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 -