工程科学学报2016，Vol.38Issue(3)：385-390,6.DOI:10.13374/j.issn2095-9389.2016.03.013
高温注氢对钒合金微观结构的影响
Effect of hydrogen implantation at high temperature on the microstructural evolution of vanadium alloys
摘要
Abstract
The microstructure evolution of V-4Cr, V-4Ti and V-4Cr-4Ti alloys was studied before and after hydrogen implanta-tion at 500℃. Before hydrogen implantation the matrix of V-4Cr alloy is clean, while parallel and vertical needle-like precipitates exist in the matrix of the other two alloys, and there are a lot of dislocations around the precipitates. After hydrogen implantation at 500℃ a large amount of uneven-distributed black dot defects and defect clusters appear in V- 4Cr alloy. Besides the black dot defects, a lot of bubbles are found in V-4Ti and V-4Cr-4Ti alloys, and the average size of bubbles in V-4Cr-4Ti alloy is smaller than that in V-4Ti alloy. In addition, the dissolution phenomena of the precipitates happen in the both alloys. There are very few bubbles found near the grain boundary in the range of 25 nm in V-4Cr-4Ti alloy, which probably indicate that the defects, such as bubbles, caused by irradiation can be restrained by the existing of grain boundaries in this material.关键词
钒合金/注氢/组织演变/析出相/气泡Key words
vanadium alloys/hydrogen implantation/microstructural evolution/precipitates/bubbles引用本文复制引用
张高伟,万发荣,姜少宁,孙锦秀,李顺兴,龙毅,詹倩,杨善武..高温注氢对钒合金微观结构的影响[J].工程科学学报,2016,38(3):385-390,6.基金项目
国家磁约束核聚变能发展专项资金资助项目(2011GB108002,2014GB120000) （2011GB108002,2014GB120000）
国家自然科学基金资助项目(51071021,51471026) （51071021,51471026）
