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Non Equilibrium Structures in Ion Implanted B2 Type Fe-Al and NiTi Ordered Alloys.

Published online by Cambridge University Press:  15 February 2011

P. Moine ,
J. P. Riviere ,
N. Junqua  and
J. Delafond
P. Moine
Affiliation:
Laboratoire de Metallurgie Physique Universite de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers, France
J. P. Riviere
Affiliation:
Laboratoire de Metallurgie Physique Universite de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers, France
N. Junqua
Affiliation:
Laboratoire de Metallurgie Physique Universite de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers, France
J. Delafond
Affiliation:
Laboratoire de Metallurgie Physique Universite de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers, France
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Abstract

Two b.c.c. ordered alloys Fe-40 at % Al and Ni-Ti have been investigated by transmission electron microscopy after self ion implantation Al+ and Ni+ respectively. Partially disordered regions are observed in the Fe-40 at % Al. On the contrary, in the Ni-Ti alloy, complete transformation to the amorphous state occured. During post implantation annealings, the precipitation of a new f.c.c. phase is observed in the Fe-40 at % Al ordered alloy, in the amorphous Ni-Ti the recrystallization occurs in a temperature range 400 – 550°C; the new phase has a structure either martensite type or B2 type with modulatiens.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 7 , 1981 , 243
Copyright
Copyright © Materials Research Society 1982

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References

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