Formation of the Fe23Zr6 phase in an Fe-Zr alloy Academic Article uri icon

abstract

  • This study confirms the existence of Fe23Zr6 in an Fe-9.8 at.% Zr alloy. This phase forms from the -Fe + Fe2Zr eutectic during high temperature annealing. Previously, Fe23Zr6 formation was explained by simple diffusion of iron atoms into the Laves intermetallic; however, this mechanism does not explain the presence of -Zr within the Fe23Zr6 phase. We have proposed a two-step mechanism for Fe23Zr6 formation: Fe2Zr decomposes into Fe23Zr6 + -Zr, and -Zr reacts with -Fe to form more Fe23Zr6. The slow kinetics of Fe23Zr6 formation is due to its dependence on atomic diffusion through the intermetallic phases.

published proceedings

  • Scripta Materialia

author list (cited authors)

  • Abraham, D. P., Richardson, J. W., & McDeavitt, S. M.

citation count

  • 35

complete list of authors

  • Abraham, Daniel P||Richardson, James W||McDeavitt, Sean M

publication date

  • July 1997