【作者】 俞方华； 郑万辉； 王承宝； 孙继光； 赵卓雍；

【Author】 Yu Fanghua Zheng Wanhui Wan Chengbao Sun Jiguang Zhao Zhuoyong (Shanghai Institute of Nuclear Research,Chinese Academy,Shanghai,201800,China) (Shanghai Alloy Plant,Shanghai,201800,China) (Beijing Institute of Noniron Research,Beijing,100088,China)

【机构】 中国科学院上海原子核研究所； 上海合金厂； 北京有色金属研究总院；

【摘要】 用HVEM在1MeV和550℃下实地研究了Si和Ti对316钢辐照肿胀的影响,含Si量1%(wt)的316钢在辐照剂量≤11dpa时和含Ti0.1%(wt)的一样,能强烈抑制辐照肿胀;但在>15dpa后,含Si量1%的钢肿胀率远大于对比316纯合金,含Ti量0. 5%(wt)能完全抑制辐照空洞产生,但诱导了Ti析出物,Si(1%)和Ti(0.1%)的联合作用,能完全抑制辐照空洞产生,也同样有少量Ti析出物。更多还原

【Abstract】 In this paper we describe the effect of minor addition Si or Ti as weel as both Si and Ti on swelling behaviour of a"pure"316 alloy,irradiated with 1 MeV electron.The alloys in solution-annealed state are irradiated at 550 dgree centregred in the high voltage electron microscope.Silicon can decrease essentially the voids nucleation rate and the number of voids but it canot decreas the size of voids on the central area of radiation. Silicon inhibit swelling only when the influenced dose is not more than 11 dpa,but it canot prevent from swelling when the influence dose is more of 11 dpa.The 316 alloy with 1%wt Si has even larger swelling rate than the"pure"alloy,influenced dose that is more than 7 dpa. Although titanum increases largely the number of voids,can decreas appearently the size of voids,it can effectly inhibit swelling.The 316 alloy with 0.1%wt Ti have far lower swelling rate than the"pure"alloy.While the 316 alloy with 0.5%wt Ti can completely prevent from swelling under the influence of dose amounting to 33 dpa,but there are many Ti particles segregated on radiation area.However,the number and the size of Ti particle increase with radiation dose,ranging 6 dpa to 33 dpa. Experemental results show that the combining effect of both Si and Ti can completely prevent from swelling of the 316 alloys owing to adding Si,adding only 0.1%wt Ti is enough to absolutlly provent from swelling of the 316 alloy under radiation dose ammounting to 33 dpa.There are some Ti particales segregated on the circle of central area,but the nmuber and size of the particles increase slightly with the dose.更多还原