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

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5795-5801
Number of pages7
JournalActa Biomaterialia
Volume9
Issue number3
DOIs
Publication statusPublished - 2013 Mar 1

Keywords

  • Cold rolling
  • Magnetic susceptibility
  • Phase constitution
  • Young's modulus
  • Zr-Nb alloy

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Effect of cold rolling on the magnetic susceptibility of Zr-14Nb alloy'. Together they form a unique fingerprint.

  • Cite this

    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