Effects of Cr and W on defects evolution in irradiated F82H model alloys

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• 作者：Shaosong Huang^a ; ^{huangshaosong1@126.com" class="auth_mail" title="E-mail the corresponding author} ; Qiu Xu^b ; Toshimasa Yoshiie^b
• 关键词：Structural ; Nuclear materials ; Defects ; Radiation damage ; Positron annihilation
• 刊名：Materials Letters
• 出版年：2016
• 出版时间：1 September 2016
• 年：2016
• 卷：178
• 期：Complete
• 页码：272-275
• 全文大小：718 K

文摘

The effects of Cr and W solute atoms on the evolution of irradiation-induced defects in Fe-8Cr and Fe-8Cr-2W alloys upon annealing after low-temperature neutron and electron irradiation were investigated by using positron annihilation lifetime measurements. Vacancy defects behavior at elevated temperatures showed that added solute Cr and W in Fe clearly suppress void growth. The void swelling suppression by Cr was explained using configuration-trapping model. For the W solute effects, the results of two types of irradiation support the solute and dislocation interaction model. Related results are important for the fabrication of improved radiation-resistant materials for fission or fusion reactors.