In This Work, a Ni-Alloy Deloro-22 Was Laser-Deposited on a Ti–6Al–4V Bar Substrate with Multiple Sets of Laser Processing Parameters. the Purpose Was to Apply Laser Surface Modification to Synthesize Different Combinations of Ductile TiNi and Hard Ti2Ni Intermetallic Phases on the Surface of Ti–6Al–4V in Order to Obtain Adjustable Surface Properties. Scanning Electron Microscopy, Energy Dispersion Spectroscopy, and X-Ray Diffraction Were Applied to Reveal the Deposited Surface Microstructure and Phase. the Effect of Processing Parameters on the Resultant Compositions of TiNi and Ti2Ni Was Discussed. the Hardness of the Deposition Was Evaluated, and Comparisons with the Ti–6Al–4V Bulk Part Were Carried Out. They Showed a Significant Improvement in Surface Hardness on Ti–6Al–4V Alloys after Laser Processing, and the Hardness Could Be Flexibly Adjusted by using This Laser-Assisted Surface Modification Technique.


Materials Science and Engineering

Second Department

Mechanical and Aerospace Engineering


National Science Foundation, Grant CMMI 1625736

Keywords and Phrases

Laser Surface Modification; Microstructure; Surface Hardness; Ti–6Al–4V Alloy; Ti–Ni Alloy

International Standard Serial Number (ISSN)


Document Type

Article - Journal

Document Version

Final Version

File Type





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Creative Commons Licensing

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Publication Date

01 Feb 2023