【摘 要】
：
Helium ion irradiation at 350℃ was performed to study equilibrium segregation and radiation-induced segregation (RIS) of Cr at grain boundaries in reduced acti
【机 构】
：
Key Laboratory of Advanced Materials of Ministry of Education,School of Materials Science and Engine
论文部分内容阅读
Helium ion irradiation at 350℃ was performed to study equilibrium segregation and radiation-induced segregation (RIS) of Cr at grain boundaries in reduced activation ferritic/martensitic steels. Cr concentration at grain boundary was measured by scanning transmission electron microscopy with an energy-dispersive spectrometer. The measured Cr concentration at grain boundaries in heat treated zone was 11.7 and 12.8 wt.％in irradiated zone, respectively, which matched well to the calculated results from Mclean and modified Perk model. Equilibrium segregation and RIS of Cr mechanisms were theoretically analysed. The analysis indicates that as temperature rises, equilibrium Cr segregation decreases monotoni-cally, while RIS of Cr has a bell-shape profile, which increases first and then decreases. It is also shown that at low and high temperatures, equilibrium segregation of Cr is higher than that of RIS; at intermediate temperatures, equilibrium Cr segregation is lower than RIS.
其他文献
There are four types of Mg–Al–Si–O inclusions observed in the Mg-treated Al-deoxidized ultra-low-carbon steel con-taining trace Si, including SiO2, 2MgO·SiO
目前,直播带货发展迅猛,呈现出多元主体共同推进、双向实时互动、满足沉浸式体验的特性.通过定量研究的方法验证直播带货模式下影响消费者购买意愿的因素模型,指出关键因素,
Vlog作为一种记录个人生活的视频影像,近几年风靡国内,虽然数量、质量和平台成熟度不及国外,但发展势头迅猛.作为Vlog的创作者,Vlogger主导和把控视频的整个进程.吸引受众、
以南昌八一起义纪念馆为例,探讨在新媒体背景下,馆藏革命文物数字化的必要性,并尝试提出革命文物数字化的基本路径,以实现文物管理更科学,利用更广泛,宣传更深入,让文物在新
摘要：随着高考的来临，广大教师及学生都投入了积极的复习备考之中。想在短短一年的时间内掌握相关的考试内容，对三校生而言难度是非常大的。对此，教师在指导学生进行复习的过程中，要充分体现学生学习的灵活性，提高复习效率，让短时间的复习起到立竿见影的效果，使学生积极应战高考。针对三校生生物高考的复习指导做了一些探究，效果明显。 关键词：三校生；高考；生物复习；策略 为了学生能在生物高考中应对自如，取得良
共享是媒介的基本属性,参照Stokes的共享经济研究框架,整合共享经济背景下媒体共享模式在协同生产、学习、消费与金融方面的表现,并在市场与非市场两种逻辑下思考该模式对于
以煤质活性炭为原料,制备了碳酸钾(K2CO3)改性活性炭,模拟烧结烟气条件,考察了其在有SO2、CO2和O2条件下的NOx 吸附效果.试验表明:0.65 mol/L K2CO3改性活性炭的NOx 吸附量最
新媒体时代背景下,抖音用户的引流是以垂直度、匹配度、赞播比、完播率为基础形成的一种获取一定量粉丝的增量模式。经研究发现,抖音标签根据用户的自我发展定位不同,可分为
以人民日报、新华社、央视新闻为例,探讨新媒体语境下主流媒体微信公众号新闻标题所呈现的特征.通过文本分析发现,主流媒体微信公众号倾向于使用长标题以显示更多信息,选择社