Molten salt reactors (MSRs), which represent a widely implemented reactor type, are subject to severe conditions, which significantly impact structural materials. Hence, in this study, the bimetal composite plate (Inconel 617/Ni-201) was developed by hot rolling to meet the demands of alloy structural materials employed in future high-temperature MSRs. The results of the bending test indicate that the interface of the two metals was well bonded. The tensile properties and microstructure, especially at the bimetallic interface of the composite plate, were tested and characterized using tensile testing machine, transmission electron microscopy (TEM), and scanning electron microscopy. TEM analysis of the bimetal interface confirmed that the two materials were in a metallurgical bonding state. Moreover, the tensile properties of the bimetal composite plate were mainly determined by the Inconel 617. In addition to the elongation at room temperature, the tensile properties of the composite plate were superior to those of Hastelloy N alloy, which is a well-known and potential structural material for use in MSRs. In this study, the tensile properties of the composite plate after long-term high-temperature aging were also tested to determine its applicability to future high-temperature MSRs.

熔融盐反应堆（MSR）代表了一种广泛实施的反应堆类型，它经受着严峻的条件，这会严重影响结构材料。因此，在这项研究中，通过热轧开发了双金属复合板（Inconel 617 / Ni-201），以满足未来高温MSR中所用合金结构材料的需求。弯曲试验的结果表明两种金属的界面结合良好。使用拉伸测试机，透射电子显微镜（TEM）和扫描电子显微镜对拉伸性能和微观结构（尤其是复合板的双金属界面处）进行了测试和表征。双金属界面的TEM分析证实这两种材料处于冶金结合状态。此外，双金属复合板的拉伸性能主要由Inconel 617确定。除了在室温下的伸长率外，复合板的拉伸性能还优于哈氏合金N合金，这是一种众所周知的潜在结构用于MSR的材料。在这项研究中，还测试了复合板在长期高温老化后的拉伸性能，以确定其在未来高温MSR中的适用性。