کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7963702 1514166 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Defect distribution in ion-irradiated pure tungsten at different temperatures
ترجمه فارسی عنوان
توزیع ناهنجی در تنگستن خالص یون تشدید شده در دماهای مختلف
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
Tungsten (W) has been selected as the armor materials for divertor in fusion reactors. To investigate the temperature dependent microstructural evolution under fusion relevant environment, pure W was irradiated with dual beam of 6.4 MeV Fe3+ and 1 MeV energy degraded He+ at 300 °C, 500 °C, 700 °C and 1000 °C. The overall distribution of microstructures were observed. At 300 °C, a high dislocation density zone (HDDZ) appeared at the end of radiation area. The HDDZ gradually disappeared with increasing irradiation temperature, instead, a low dislocation density zone (LDDZ) appeared between the front zone (FZ) and diffusion zone (DZ). At all the irradiation temperatures, both dislocation lines and loops were observed, while bubbles were observed only at 500 °C and above. Loop rafts appeared in the whole irradiated area from 300 °C to 700 °C, but only in the defect diffusion zone (DZ) at 1000 °C. Dislocation loop denuded zone was formed along grain boundaries, suggesting that grain boundaries suppress the formation of dislocation loops. Bubbles at grain boundaries tended to have a larger size than those in the matrix, indicating that bubble growth was accelerated in grain boundaries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 480, November 2016, Pages 207-215
نویسندگان
, , ,