Laser Powder Cladding of Ti-6Al-4V α/β Alloy

Article English OPEN
Samar Reda Al-Sayed Ali ; Abdel Hamid Ahmed Hussein ; Adel Abdel Menam Saleh Nofal ; Salah Elden Ibrahim Hasseb Elnaby ; Haytham Abdelrafea Elgazzar ; Hassan Abdel Sabour (2017)
  • Publisher: MDPI AG
  • Journal: Materials, volume 10, issue 10 (issn: 1996-1944, eissn: 1996-1944)
  • Related identifiers: pmc: PMC5666984, doi: 10.3390/ma10101178
  • Subject: QC120-168.85 | microhardness | Engineering (General). Civil engineering (General) | co-axial laser cladding process | Technology | Article | TA1-2040 | T | wear resistance | Electrical engineering. Electronics. Nuclear engineering | TK1-9971 | Microscopy | laser surface treatment | titanium alloys | QH201-278.5 | Descriptive and experimental mechanics

Laser cladding process was performed on a commercial Ti-6Al-4V (α + β) titanium alloy by means of tungsten carbide-nickel based alloy powder blend. Nd:YAG laser with a 2.2-KW continuous wave was used with coaxial jet nozzle coupled with a standard powder feeding system. Four-track deposition of a blended powder consisting of 60 wt % tungsten carbide (WC) and 40 wt % NiCrBSi was successfully made on the alloy. The high content of the hard WC particles is intended to enhance the abrasion resistance of the titanium alloy. The goal was to create a uniform distribution of hard WC particles that is crack-free and nonporous to enhance the wear resistance of such alloy. This was achieved by changing the laser cladding parameters to reach the optimum conditions for favorable mechanical properties. The laser cladding samples were subjected to thorough microstructure examinations, microhardness and abrasion tests. Phase identification was obtained by X-ray diffraction (XRD). The obtained results revealed that the best clad layers were achieved at a specific heat input value of 59.5 J·mm−2. An increase by more than three folds in the microhardness values of the clad layers was achieved and the wear resistance was improved by values reaching 400 times.
  • References (38)
    38 references, page 1 of 4

    Li, J., Chen, C., Squartini, T., He, Q.. A study on wear resistance and microcrack of the Ti3Al/TiAl + TiC ceramic layer deposited by laser cladding on Ti-6Al-4V alloy. Appl. Surf. Sci.. 2010; 257: 1550-1555

    Kartal, G., Timur, S., Urgen, M., Erdemir, A.. Electrochemical boriding of titanium for improved mechanical properties. Surf. Coat. Technol.. 2010; 204: 3935-3939

    Savalani, M.M., Ng, C.C., Li, Q.H., Man, H.C.. In situ formation of titanium carbide using titanium and carbon-nanotube powders by laser cladding. Appl. Surf. Sci.. 2012; 258: 3173-3177

    Tian, Y.S., Chen, C.Z., Li, S.T., Huo, Q.H.. Research progress on laser surface modification of titanium alloys. Appl. Surf. Sci.. 2005; 242: 177-184

    Tian, Y.S., Chen, C.Z., Chen, L.X., Huo, Q.H.. Microstructures and wear properties of composite coatings produced by laser alloying of Ti-6Al-4V with graphite and silicon mixed powders. Mater. Lett.. 2006; 60: 109-113

    Ion, J.C.. Laser Processing of Engineering Materials: Principles, Procedure and Industrial Application. 2005

    Jang, J.H., Joo, B.D., Van Tyne, C.J., Moon, Y.H.. Characterization of deposited layer fabricated by direct laser melting process. Met. Mater. Int.. 2013; 19: 497-506

    Zhang, D., Cai, Q., Liu, J., He, J., Li, R.. Microstructural evolvement and formation of selective laser melting W-Ni-Cu composite powder. Int. J. Adv. Manuf. Technol.. 2013; 67: 2233-2242

    Mok, S.H., Bi, G., Folkes, J., Pashby, I.. Deposition of Ti-6Al-4V using a high power diode laser and wire, Part I: Investigation on the process characteristics. Surf. Coat. Technol.. 2008; 202: 3933-3939

    Sachdev, A.K., Kulkarni, K., Fang, Z.Z., Yang, R., Girshov, V.. Titanium for automotive applications: Challenges and opportunities in materials and processing. JOM. 2012; 64: 553-565

  • Metrics
    No metrics available
Share - Bookmark