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Volume 25 Issue 1
Jan.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(1): 80-87
S. Arunkumar, P. Kumaravel, C. Velmurugan,  and V. Senthilkumar, Microstructures and mechanical properties of nanocrystalline NiTi intermetallics formed by mechanosynthesis, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 80-87. https://doi.org/10.1007/s12613-018-1549-z
Cite this article as:
S. Arunkumar, P. Kumaravel, C. Velmurugan,  and V. Senthilkumar, Microstructures and mechanical properties of nanocrystalline NiTi intermetallics formed by mechanosynthesis, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 80-87. https://doi.org/10.1007/s12613-018-1549-z
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研究论文

Microstructures and mechanical properties of nanocrystalline NiTi intermetallics formed by mechanosynthesis

  • Vinayaka Mission's Kirupananda Variyar Engineering College, Salem 636308, Tamilnadu, India

  • Institute of Road and Transport Technology, Erode 638316, Tamilnadu, India

  • National Institute of Technology, Trichy 620015, Tamilnadu, India

  • 通讯作者:

    S. Arunkumar    E-mail: shaiarun1978@gmail.com

  • The formulation of nanocrystalline NiTi shape memory alloys has potential effects in mechanical stimulation and medical implantology. The present work elucidates the effect of milling time on the product's structural characteristics, chemical composition, and microhardness for NiTi synthesized by mechanical alloying for different milling durations. Increasing the milling duration led to the formation of a nanocrystalline NiTi intermetallic at a higher level. The formation of nanocrystalline materials was directed through cold fusion, fracturing, and the development of a steady state, which were influenced by the accumulation of strain energy. In the morphological study, uninterrupted cold diffusion and fracturing were visualized using transmission electron microscopy. Particle size analysis revealed that the mean particle size was reduced to~93 μm after 20 h of milling. The mechanical strength was enhanced by the formation of a nanocrystalline intermetallic phase at longer milling time, which was confirmed by the results of Vickers hardness analyses.
    • Research Article

    Microstructures and mechanical properties of nanocrystalline NiTi intermetallics formed by mechanosynthesis

    + Author Affiliations
      Abstract
    • The formulation of nanocrystalline NiTi shape memory alloys has potential effects in mechanical stimulation and medical implantology. The present work elucidates the effect of milling time on the product's structural characteristics, chemical composition, and microhardness for NiTi synthesized by mechanical alloying for different milling durations. Increasing the milling duration led to the formation of a nanocrystalline NiTi intermetallic at a higher level. The formation of nanocrystalline materials was directed through cold fusion, fracturing, and the development of a steady state, which were influenced by the accumulation of strain energy. In the morphological study, uninterrupted cold diffusion and fracturing were visualized using transmission electron microscopy. Particle size analysis revealed that the mean particle size was reduced to~93 μm after 20 h of milling. The mechanical strength was enhanced by the formation of a nanocrystalline intermetallic phase at longer milling time, which was confirmed by the results of Vickers hardness analyses.
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