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High Energy Proton Irradiation of Pure Titanium

Published online by Cambridge University Press:  21 March 2011

Teresa Leguey ,
Claude Bailat ,
Nadine Baluc  and
Max Victoria
Teresa Leguey
Affiliation:
Centre of Research in Plasma Physics, Association EURATOM-Swiss Confederation, Swiss Federal Institute of Technology - Lausanne, 5232 Villigen-PSI, OVGA/6, Switzerland
Claude Bailat
Affiliation:
Centre of Research in Plasma Physics, Association EURATOM-Swiss Confederation, Swiss Federal Institute of Technology - Lausanne, 5232 Villigen-PSI, OVGA/6, Switzerland
Nadine Baluc
Affiliation:
Centre of Research in Plasma Physics, Association EURATOM-Swiss Confederation, Swiss Federal Institute of Technology - Lausanne, 5232 Villigen-PSI, OVGA/6, Switzerland
Max Victoria
Affiliation:
Centre of Research in Plasma Physics, Association EURATOM-Swiss Confederation, Swiss Federal Institute of Technology - Lausanne, 5232 Villigen-PSI, OVGA/6, Switzerland
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Abstract

Polycrystalline specimens of hcp pure titanium have been irradiated at 300-320 K with 590 MeV protons to doses ranging between 10-3 and 3×10-2 dpa. Combination of tensile deformation experiments and transmission electron microscopy observations revealed that irradiation produces slight hardening of the material, related to the irradiation-induced formation of defect clusters, but not significant loss of ductility. Plastic deformation of irradiated titanium is homogeneous. It occurs via propagation of dislocations through a cloud of defect clusters, leading to their annihilation and the formation of a cellular dislocation structure together with twins. This mechanical behavior is similar to what was previously observed for pure fcc metals, the formation of twins being however intrinsic to deformation of hcp titanium.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 650: Symposium R – Microstructural Processes in Irradiated Materials-2000 , 2000 , R3.1
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

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