High temperature tensile testing of modified 9Cr–1Mo after irradiation with high energy protons
2003; Elsevier BV; Volume: 318; Linguagem: Inglês
10.1016/s0022-3115(03)00023-0
ISSN1873-4820
AutoresM.B. Toloczko, M.L. Hamilton, S.A. Maloy,
Tópico(s)Metal and Thin Film Mechanics
ResumoThis study examines the effect of tensile test temperatures ranging from 50 to 600 °C on the tensile properties of a modified 9Cr–1Mo ferritic steel after high energy proton irradiation at about 35–67 °C to doses from 1 to 3 dpa and 9 dpa. For the specimens irradiated to doses between 1 and 3 dpa, it was observed that the yield strength and ultimate strength decreased monotonically as a function of tensile test temperature, whereas the uniform elongation (UE) remained at approximately 1% for tensile test temperatures up to 250 °C and then increased for tensile test temperatures up to and including 500 °C. At 600 °C, the UE was observed to be less than the values at 400 and 500 °C. UE of the irradiated material tensile tested at 400–600 °C was observed to be greater than the values for the unirradiated material at the same temperatures. Tensile tests on the 9 dpa specimens followed similar trends.
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