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Mechanical Strengthening and Microstructural Evolutions of Ni-B Based Hardfacing Alloys Influenced by Titanium Additions

Received: 31 January 2019     Accepted: 11 March 2019     Published: 13 April 2019
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Abstract

The microstructure and mechanical behaviour of Ni-B binary alloys have been enhanced in this study by varied titanium additions. The alloys investigated were chosen from the nickel-rich region of the Ni-B-Ti system. The microstructure of the alloys was examined using Optical Microscope (OM) and Scanning Electron Microscope (SEM) equipped with Energy Dispersive X-ray Analyzer (EDXA). The addition of titanium led to the formation of various complex phases and a ternary phase τ was observed in the study. The addition of titanium to the Ni-B alloys was found to enhance the mechanical properties of the ternary alloys. Microhardness value of the alloys was observed to increase from 216.2 HV with zero Ti in Ni-B alloys to 1530.7 HV in alloys with 11 wt. % Ti. The stiffness of the alloys was also found to increase as deduced from elastic modulus value of 513.77 to 1046.51 N/m2 in Alloys C. Remarkable improvement in physical properties of the Ni-based ternary alloys is due to the formation of various hard boride phases and grain size reduction occasioned by the increase in titanium content.

Published in Advances in Materials (Volume 8, Issue 2)
DOI 10.11648/j.am.20190802.11
Page(s) 41-47
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Ni-B Alloys, Ti Addition, Microstructure, Microhardness, Ternary Alloy, Stiffness

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  • APA Style

    Zeblon Meshack Ebimobowei, Ajenifuja Emmanuel, Ajao John Adegbindin. (2019). Mechanical Strengthening and Microstructural Evolutions of Ni-B Based Hardfacing Alloys Influenced by Titanium Additions. Advances in Materials, 8(2), 41-47. https://doi.org/10.11648/j.am.20190802.11

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    ACS Style

    Zeblon Meshack Ebimobowei; Ajenifuja Emmanuel; Ajao John Adegbindin. Mechanical Strengthening and Microstructural Evolutions of Ni-B Based Hardfacing Alloys Influenced by Titanium Additions. Adv. Mater. 2019, 8(2), 41-47. doi: 10.11648/j.am.20190802.11

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    AMA Style

    Zeblon Meshack Ebimobowei, Ajenifuja Emmanuel, Ajao John Adegbindin. Mechanical Strengthening and Microstructural Evolutions of Ni-B Based Hardfacing Alloys Influenced by Titanium Additions. Adv Mater. 2019;8(2):41-47. doi: 10.11648/j.am.20190802.11

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  • @article{10.11648/j.am.20190802.11,
      author = {Zeblon Meshack Ebimobowei and Ajenifuja Emmanuel and Ajao John Adegbindin},
      title = {Mechanical Strengthening and Microstructural Evolutions of Ni-B Based Hardfacing Alloys Influenced by Titanium Additions},
      journal = {Advances in Materials},
      volume = {8},
      number = {2},
      pages = {41-47},
      doi = {10.11648/j.am.20190802.11},
      url = {https://doi.org/10.11648/j.am.20190802.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20190802.11},
      abstract = {The microstructure and mechanical behaviour of Ni-B binary alloys have been enhanced in this study by varied titanium additions. The alloys investigated were chosen from the nickel-rich region of the Ni-B-Ti system. The microstructure of the alloys was examined using Optical Microscope (OM) and Scanning Electron Microscope (SEM) equipped with Energy Dispersive X-ray Analyzer (EDXA). The addition of titanium led to the formation of various complex phases and a ternary phase τ was observed in the study. The addition of titanium to the Ni-B alloys was found to enhance the mechanical properties of the ternary alloys. Microhardness value of the alloys was observed to increase from 216.2 HV with zero Ti in Ni-B alloys to 1530.7 HV in alloys with 11 wt. % Ti. The stiffness of the alloys was also found to increase as deduced from elastic modulus value of 513.77 to 1046.51 N/m2 in Alloys C. Remarkable improvement in physical properties of the Ni-based ternary alloys is due to the formation of various hard boride phases and grain size reduction occasioned by the increase in titanium content.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Mechanical Strengthening and Microstructural Evolutions of Ni-B Based Hardfacing Alloys Influenced by Titanium Additions
    AU  - Zeblon Meshack Ebimobowei
    AU  - Ajenifuja Emmanuel
    AU  - Ajao John Adegbindin
    Y1  - 2019/04/13
    PY  - 2019
    N1  - https://doi.org/10.11648/j.am.20190802.11
    DO  - 10.11648/j.am.20190802.11
    T2  - Advances in Materials
    JF  - Advances in Materials
    JO  - Advances in Materials
    SP  - 41
    EP  - 47
    PB  - Science Publishing Group
    SN  - 2327-252X
    UR  - https://doi.org/10.11648/j.am.20190802.11
    AB  - The microstructure and mechanical behaviour of Ni-B binary alloys have been enhanced in this study by varied titanium additions. The alloys investigated were chosen from the nickel-rich region of the Ni-B-Ti system. The microstructure of the alloys was examined using Optical Microscope (OM) and Scanning Electron Microscope (SEM) equipped with Energy Dispersive X-ray Analyzer (EDXA). The addition of titanium led to the formation of various complex phases and a ternary phase τ was observed in the study. The addition of titanium to the Ni-B alloys was found to enhance the mechanical properties of the ternary alloys. Microhardness value of the alloys was observed to increase from 216.2 HV with zero Ti in Ni-B alloys to 1530.7 HV in alloys with 11 wt. % Ti. The stiffness of the alloys was also found to increase as deduced from elastic modulus value of 513.77 to 1046.51 N/m2 in Alloys C. Remarkable improvement in physical properties of the Ni-based ternary alloys is due to the formation of various hard boride phases and grain size reduction occasioned by the increase in titanium content.
    VL  - 8
    IS  - 2
    ER  - 

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Author Information
  • Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

  • Centre for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Nigeria

  • Centre for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Nigeria

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