Fabrication, microstructure and micromechanical properties of Fe-based metallic glass coating manufactured by laser

Zhang, P. and Zhang, Q. and Yan, H. and Yu, Z. and Yang, J. and Chen, J. and Wu, D. and Shi, H. and Tian, Y. and Ma, S. and Lei, W. (2021) Fabrication, microstructure and micromechanical properties of Fe-based metallic glass coating manufactured by laser. Surface and Coatings Technology, 405: 126726. ISSN 0257-8972

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Abstract

Iron-based amorphous alloys have received extensive attention due to their high hardness, elastic modulus/limit and wear/corrosion resistance. In this research, an attempt has been made to develop an amorphous coating of Fe-Cr-Mo-C-B-Y metallic glass coating on the steel substrate through laser surface treatment. During the test, various process parameters are used to determine the position of the amorphous phase. After coating, the microstructure and phase distribution of the coating were analyzed by scanning electron microscope, X-ray diffraction and transmission electron microscope. Mechanical properties of the coating were analyzed by using microhardness testing, abrasion resistance and nanoindentation methods. The results show that the coating thickness varies directly with the incident laser power and interaction time. The microstructure of the coating can be divided into three layers: the first layer (columnar crystals), the second layer (the crystalline phase filled with the unit structure) and the third layer (the unit structure consists of a crystalline phase and an amorphous phase). As the heat input of laser cladding decreases, the volume fraction of the amorphous phase increases, and the average microhardness and nanohardness increase.

Item Type:

Journal Article

Journal or Publication Title:

Surface and Coatings Technology

Additional Information:

This is the author’s version of a work that was accepted for publication in Surface and Coatings Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Surface and Coatings Technology, 405, 2021 DOI: 10.1016/j.surfcoat.2020.126726

Uncontrolled Keywords:

/dk/atira/pure/subjectarea/asjc/2500/2505

Subjects:

?? amorphous coatingcomposite coatinglaser claddingmetallic glassnanoindentationamorphous alloyscrystal structureglassiron alloysmicrohardnessmicrostructurescanning electron microscopysurface treatmentthickness measurementtransmission electron microscopywear ??

Departments:

Faculty of Science and Technology > Engineering

ID Code:

150962

Deposited By:

ep_importer_pure

Deposited On:

21 Jan 2021 11:18

Refereed?:

Yes

Published?:

Published