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Reverse martensitic phase transformation induced in Nb–Co multilayers by ion irradiation

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Abstract

A reverse martensitic phase transformation was observed in Nb-enriched Nb-Co multilayers induced by room temperature 200 ke V xenon ion mixing. Further experiments revealed that this bcc-fcc transition proceeds in two steps, i.e., bcc-hcp and hcp-fcc. A crystallographic model is proposed to explain the two-step transition through shearing and sliding, which are mediated by irradiation-induced defects and strain in the films. In addition, the existence of the hcp and fcc metastable states in the Nb-Co system was confirmed by high-temperature solid state interdiffusion of the corresponding multilayers.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    B. X. Liu & Z. J. Zhang

  2. Center of Condensed Matter and Radiation Physics, CCAST (World Laboratory), Beijing, 100080, China

    B. X. Liu

Authors
  1. B. X. Liu
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  2. Z. J. Zhang
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Liu, B.X., Zhang, Z.J. Reverse martensitic phase transformation induced in Nb–Co multilayers by ion irradiation. Journal of Materials Research 9, 357–361 (1994). https://doi.org/10.1557/JMR.1994.0357

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  • DOI: https://doi.org/10.1557/JMR.1994.0357

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