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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.

DOI 10.11648/j.am.20190802.11
Published in Advances in Materials (Volume 8, Issue 2, June 2019)
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), 2024. Published by Science Publishing Group

Keywords

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

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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; Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South Africa

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

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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://download.sciencepg.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
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    DO  - 10.11648/j.am.20190802.11
    T2  - Advances in Materials
    JF  - Advances in Materials
    JO  - Advances in Materials
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    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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