Radiation-induced softening of Fe-Mo alloy under high- temperature electron irradiation

Effect of radiation-induced change of mechanical properties of Fe-5 wt.% Mo alloy irradiated with electrons (2 MeV) at room temperature and 400°C has been investigated. Mechanical properties were estimated by Miniaturized Disk Bend Test technique. Effect of radiation softening of the alloy is ascert...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-04, Vol.130 (1), p.12016-12019
Main Author: Tsepelev, A
Format: Article
Language:English
Subjects:
Annealing
Bend properties
Bend tests
Electron irradiation
Ferrous alloys
Iron
Irradiation
Mechanical properties
Molybdenum
Phase composition
Radiation
Radiation effects
Room temperature
Softening
Strengthening
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Summary:Effect of radiation-induced change of mechanical properties of Fe-5 wt.% Mo alloy irradiated with electrons (2 MeV) at room temperature and 400°C has been investigated. Mechanical properties were estimated by Miniaturized Disk Bend Test technique. Effect of radiation softening of the alloy is ascertained the value of which was increased with temperature rise. With the purpose of separation of thermal and radiation contributions into the effects, the tests were carried out for specimens annealed in the same thermal conditions (temperature and duration of annealing) just as during irradiation. Thermal annealing and electron irradiation at 400°C is found to bring to multidirectional effects of the alloy strengthening and softening respectively. It is concluded that irradiation suppresses the effect of thermal-induced strengthening and stimulates a softening of the alloy due to more significant changes in the structure and phase composition of it.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/130/1/012016