Void swelling in molybdenum alloys in situ observed by a high-voltage electron microscope. [Helium ions]

Conference · Thu Jan 01 04:00:00 EST 1981 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:6453621

Igata, N; Kohyama, A; Nomura, S

As a simulation of neutron radiation damage, in situ observations were made by a 1250-kV high-voltage electron microscope (HVEM) with the specimens heated to 1350 K. The objective was to clarify the elemental process of void swelling the effect of preinjected helium, and the effect of rhenium addition on void swelling in molybdenum alloys. Dose dependence and temperature dependence of void swelling were analyzed by the linear after-incubation-swelling model. Helium preinjection made the in situ HVEM experiment more effective as a simulation experiment of fusion reactor and fast breeder reactors. Rhenium addition was very effective in suppressing void swelling in molybdenum alloys and in shifting slightly higher the peak swelling temperature.

• Research Organization: Univ of Tokyo, Jpn
• OSTI ID: 6453621
• Report Number(s): CONF-800609-
• Conference Information: Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)
• Country of Publication: United States
• Language: English

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ALLOYS
BREEDER REACTORS
ELECTRON MICROSCOPY
ELEMENTS
FLUIDS
GASES
HELIUM
MATERIALS
MICROSCOPY
MOLYBDENUM ALLOYS
NONMETALS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RARE GASES
REACTOR MATERIALS
REACTORS
RHENIUM ADDITIONS
RHENIUM ALLOYS
SIMULATION
SWELLING
THERMONUCLEAR REACTOR MATERIALS
VERY HIGH TEMPERATURE
VOIDS