Local modification of hardness in FeCu alloys by using swift heavy ion irradiation

Supersaturated Fe–1.2wt.% Cu alloys were irradiated with 200MeV Xe and 200MeV Au ions at elevated temperatures. To make an irradiated region and an unirradiated region in specimens, a masking plate was put on the specimen during the irradiation. After the irradiation, the hardness was measured by us...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2007-04, Vol.257 (1-2), p.397-401
Main Authors: Nakagawa, Shou, Hori, F., Chimi, Y., Ishikawa, N., Kitagawa, M., Oshima, R., Tobita, T., Taniguchi, R., Suzuki, M., Iwase, A.
Format: Article
Language:English
Subjects:
Ion irradiation
Local modification of hardness
Nano-indentation
Radiation enhanced segregation
Supersaturated alloys
Vickers hardness
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Summary:Supersaturated Fe–1.2wt.% Cu alloys were irradiated with 200MeV Xe and 200MeV Au ions at elevated temperatures. To make an irradiated region and an unirradiated region in specimens, a masking plate was put on the specimen during the irradiation. After the irradiation, the hardness was measured by using a conventional microhardness tester or a nano-indenter. We have found that the hardness only in irradiated region increases by the irradiation. The boundary of irradiated and unirradiated regions can be clearly identified by the difference in hardness. The present result implies that swift heavy ion irradiation can be used for the local modification of hardness in Fe–Cu supersaturated alloys.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2007.01.263