Al-Si共晶合金与1Cr18Ni9Ti不锈钢的相容性研究

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Study on Compatibility between Al-Si and 1Cr18Ni9Ti

1. College of Material Science and Engineering, Xihua University, Chengdu, 610039, China;
2. Nuclear Power Institute of China, Chengdu, 610041, China

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。
- 中子吸收材料 /
- Al-Si共晶合金 /
- 1Cr18Ni9Ti /
- 相容性 /
- 扩散
Abstract: 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.
- Neutron absorbing material /
- Al-Si eutectic alloy /
- 1Cr18Ni9Ti /
- Compatibility /
- Diffusion