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Irradiation Effects on Impact Behavior of 12Cr-1MoVW and 21⁄4Cr-1Mo Steels

出版	ASTM International, 1992
URL	http://books.google.com.hk/books?id=Yl99zgEACAAJ&hl=&source=gbs_api

註釋Charpy impact tests were conducted on 12Cr-1MoVW steel after irradiation in the fast flux test facility (FFTF) and the Oak Ridge research reactor (ORR). One-half-size and one-third-size Charpy specimens were irradiated in FFTF at 365°C. After irradiating half-size specimens to 10 and 17 dpa, a shift in ductile-brittle-transition temperature (DBTT) of 160°C was observed for both fluences, indicating a saturation in the shift. A shift in DBTT of 151 °C was observed for the one-third-size specimens after irradiation to 10 dpa. One-third-size specimens of 12Cr-1MoVW steel irradiated to 7 dpa in the ORR at 330 and 400°C developed shifts in DBTT of 200 and 120°C, respectively, somewhat above and below the shifts observed after irradiation at 365°C in FFTF. This correspondence of results in the mixed-spectrum ORR and the fast-spectrum FFTF is in marked contrast to large differences observed between specimens irradiated in the mixed-spectrum high flux isotope reactor and the fast spectrum experimental breeder reactor.