Al-Si共晶合金与1Cr18Ni9Ti不锈钢的相容性研究  

Study on Compatibility between Al-Si and 1Cr18Ni9Ti

作　　者：兰军[1] 查五生[1] 邹从沛[2] 刘改华[1] 王正云[1] 

机构地区：[1]西华大学材料科学与工程学院,成都610039 [2]中国核动力研究设计院,成都610041

出　　处：《核动力工程》2007年第6期76-79,共4页Nuclear Power Engineering

摘　　要：用粉末冶金法制备了Al-Si共晶合金与1Cr18Ni9Ti不锈钢反应堆扩散偶。采用电子显微镜(SEM)、能谱分析仪(EDS)、X射线衍射仪(XRD)研究了扩散偶在560℃和650℃时的相容性及扩散层形成机理。结果表明,扩散温度对两种材料之间的相容性有显著影响;650℃时,Al-Si共晶合金与1Cr18Ni9Ti之间通过浸润和扩散反应形成了比较明显的扩散层。XRD谱也表明,扩散层中存在Fe2Al5化合物;560℃时Al-Si共晶合金与1Cr18Ni9Ti之间仅发生固相反应,形成的扩散层很薄,二者相容性较好。The couple of Al-Si eutectic alloy and 1Cr18Ni9Ti stainless steel canister used in reactor was prepared by powder-metallurgy method. The compatibility and diffusion mechanics between them at 560℃ and 650℃ were investigated. The compatibility is greatly determined by diffusion temperature. At 650℃,SEM, EDS and XRD showed that the dramatic diffusion layer formed due to the infiltration and diffusion reaction. The Fe2Al5 has been found in the diffusion layer. At 560℃, there is a solid state reaction only between the Al-Si eutectic alloy and 1Cr18Ni9Ti.The diffusion layer is very thin, which has showed a very good compatibleness between them.

关 键 词：中子吸收材料 AL-SI共晶合金 1CR18NI9TI 相容性 扩散 

分 类 号：TG146.2[一般工业技术—材料科学与工程]