Effect of Deuterium Ion Implantation on Microstructures of Fe-M (M=V, W, Ta) Alloys

查看全文 作　　者：Shaoning [1]JIANG;Farong [1]WAN;Yi [1]LONG;Jianchao [1]HE;Pingping [1]LIU;Somei [2]OHNUKI;Naoyuki [2]HASHIMOTO 机构地区：[1]School of Materials Science and Engineering, University of Science and Technology Beijing;[2]Faculty of Engineering, Hokkaido University 出　　处：《Acta Metallurgica Sinica(English Letters)》索引2013年第26卷第3期,共4页 基　　金：financially supported by the National Natural Science Foundation of China (No. 50971030);the National Basic Research Program of China(Nos. 2009GB109004 and 2011GB108002);the Core University Program of Japan Society for the Promotion of Science 摘　　要：To study the effect of tungsten, vanadium and tantalum on the microstructures in CLAM (China Low Activation Martensitic) steel after irradiation respectively, the microstructures of Fe-M (M= V ,W, Ta) model alloys were investigated after implanted deuterium ions using an ion accelerator at 773 K. After implanted deuterium ion, TEM (Transmission Electron Microscope) observation and EDX (Energy Dispersive X-ray Spectrom) analysis have been carried out. The result showed that tiny voids were observed in all model alloys after implanted the same dose of deuterium ions. The swelling rate in FeTa alloy was the smallest among the three alloys. Unlike FeW and FeV alloys, there was the segregation in FeTa alloy under a fluence of 5×1017 D + /cm2 at 773 K. A theoretical analysis showed that the void growth in FeTa alloy slowed down due to tantalum segregation near voids. It indicates that tantalum plays an important role in the improved irradiation resistance of CLAM steel. 关 键 词：Ions implantation VOID RADIATION-INDUCED SEGREGATION SWELLING