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Effects of Nitrogen and Helium Ion Implantation on Uniaxial Tensile Properties of 316 SS Foils

Published online by Cambridge University Press:  25 February 2011

J. A. Spitznagel ,
B. O. Hall ,
N. J. Doyle ,
Raman Jayram ,
R. W. Wallace ,
J. R. Townsend  and
M. Miller
J. A. Spitznagel
Affiliation:
Westinghouse R&D Center, Pittsburgh, PA 15235;
B. O. Hall
Affiliation:
Westinghouse R&D Center, Pittsburgh, PA 15235;
N. J. Doyle
Affiliation:
Westinghouse R&D Center, Pittsburgh, PA 15235;
Raman Jayram
Affiliation:
University of Pittsburgh, Pittsburgh, PA 15260;
R. W. Wallace
Affiliation:
University of Pittsburgh, Pittsburgh, PA 15260;
J. R. Townsend
Affiliation:
University of Pittsburgh, Pittsburgh, PA 15260;
M. Miller
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
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Abstract

Implantation of nitrogen into steels is known to affect surface sensitive mechanical properties. Tensile properties of thin foils implanted with either nitrogen or helium at 300 K have been measured. Fluences greater than 1 × 1016 ions/cm2 raise the yield stress and fracture stress and reduce the plastic strain to failure. Both nitrogen and helium give comparable stress-strain responses for equal average concentrations of implanted ions. The mechanical response is discussed in terms of plastic flow of laminated structures and hardening mechanisms. Initial results of atom probe field ion microscopy examinations of nitrogen implanted Fe-15 wt.% Cr-12 wt.% Ni alloy are described.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 27: Symposium E – Ion Implantation and Ion Beam Processing of Materials , 1983 , 597
Copyright
Copyright © Materials Research Society 1984

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References

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