Effect of Deuterium Ion Implantation on Microstructures of Fe-M （M=V, W, Ta） Alloys
来源期刊：Acta Metallurgica Sinica2013年第3期
论文作者：Shaoning JIANG Farong WAN Yi LONG Jianchao HE Pingping LIU Somei OHNUKI Naoyuki HASHIMOTO
文章页码：303 - 306
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.
Shaoning JIANG1，Farong WAN1，Yi LONG1，Jianchao HE1，Pingping LIU1，Somei OHNUKI2，Naoyuki HASHIMOTO2
1. School of Materials Science and Engineering, University of Science and Technology Beijing2. Faculty of Engineering, Hokkaido University
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.
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