Effect of cold rolling on the magnetic susceptibility of Zr-14Nb alloy

Ryota Kondo, Ryota Shimizu, Naoyuki Nomura, Hisashi Doi, Suyalatu, Yusuke Tsutsumi, Kazutaka Mitsuishi, Masayuki Shimojo, Kazuhiko Noda, Takao Hanawa

研究成果: Article

22 引用 (Scopus)

抜粋

The magnetic susceptibility of cold-rolled Zr-14Nb was evaluated to apply a new metallic medical device used for magnetic resonance imaging (MRI). The magnetic susceptibility of cold-rolled Zr-14Nb decreased up to the reduction ratio of 30%, then gradually decreased up to the ratio of 90%. Transmission electron microscopic observation revealed the strain-induced formation of ω phase after cold rolling at the reduction ratio of 5%, indicating that the initial decrease in magnetic susceptibility was caused by the formation of the ω phase. The ω phase was saturated at the reduction ratio of 30%. The formation of the ω phase could be explained on the basis of the increase in the Young's modulus and Vickers hardness of cold-rolled Zr-14Nb. The effect of texture formation on these properties was not obvious in the cold-rolled Zr-14Nb. Because of the strain-induced formation of the ω phase, the magnetic susceptibility of Zr-14Nb can be reduced by cold rolling to as low as that of as-cast Zr-9Nb, which is one-third that of Ti and Ti alloys. Therefore, cold-workable Zr-14Nb with low magnetic susceptibility could be a promising alloy for medical devices under MRI.

元の言語English
ページ(範囲)5795-5801
ページ数7
ジャーナルActa Biomaterialia
9
発行部数3
DOI
出版物ステータスPublished - 2013 3 1

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering
  • Molecular Biology

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    Kondo, R., Shimizu, R., Nomura, N., Doi, H., Suyalatu, Tsutsumi, Y., Mitsuishi, K., Shimojo, M., Noda, K., & Hanawa, T. (2013). Effect of cold rolling on the magnetic susceptibility of Zr-14Nb alloy. Acta Biomaterialia, 9(3), 5795-5801. https://doi.org/10.1016/j.actbio.2012.10.046