Radiation hardening in neutron-irradiated molybdenum and its alloys. [> 1 MeV]
Molybdenum and its alloys (molybdenum-titanium-zirconium (TZM) and Mo-0.56Nb) were neutron-irradiated in the Japan Research Reactor-2 and the Japan Material Testing Reactor at temperature between 873 and 1263 K to fluences in the range 1.2 to 3.0 x 10/sup 24/ neutrons/m/sup 2/ (E >1 MeV). The effect of these irradiations on mechanical properties was investigated and interpreted in terms of change in microstructure Radiation hardening caused by voids was observed. The ductile-to-brittle transition temperature (DBTT) of the irradiated molybdenum and TZM was above room temperature, but below 773 K. The total elongation avove 773 K suggested the irradiation temperature dependence of DBTT in the irradiated molybdenum. Results suggest that the Mo-056Nb alloy is a good candidate material for use as a heat protection wall of a fusion reactor.
- Research Organization:
- Jpn At Energy Res Inst, Ibaraki
- OSTI ID:
- 6187094
- Report Number(s):
- CONF-800609-
- Journal Information:
- Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States); ISSN ABASC
- Country of Publication:
- United States
- Language:
- English
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BARYONS
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DUCTILITY
ELEMENTARY PARTICLES
ELEMENTS
EMBRITTLEMENT
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