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首页> 外文期刊>Transactions of the American nuclear society >Measurement and Modeling of Mechanical Behavior of V-SiC Interfacial Joints for Fusion Applications
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Measurement and Modeling of Mechanical Behavior of V-SiC Interfacial Joints for Fusion Applications

机译：融合应用中V-SiC界面接头力学行为的测量与建模

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摘要

Development of materials and associated joining technologies are the greatest challenges to deployment of nuclear fusion reactors. SiC and V are among the few identified candidate materials which can operate in a fusion environment. While V is expected to be find use in blanket components, SiC based composites are suitable for structural applications on account of its excellent thermos-mechanical and neutronic properties. However currently the use of these materials (especially SiC based composites) is limited by the availability of joining technologies that can work satisfactorily in a fusion environment. Additionally in a multi-material system like a fusion reactor, joining dissimilar materials (ceramics-metals) can be even more challenging on account of the anticipated thermal expansion mismatches. This paper describes one such technique which is anticipated to reduce the effect of huge thermal expansion mismatches by using compositional grading achieved by mean of successive film/interlayer deposition and heat treatment to achieve limited sub-surface reactive alloying. The applicability of this technique is briefly described here to SiC-V joints along with the results of modeling the mechanical behavior of these joints both under uniform and gradient heating scenarios.
机译：材料的开发和相关的连接技术是部署核聚变反应堆的最大挑战。 SiC和V是少数可以在熔融环境中运行的候选材料。尽管人们期望将V用于毯状组件，但基于SiC的复合材料因其出色的热机械特性和中子特性而适合于结构应用。但是，目前，这些材料（尤其是SiC基复合材料）的使用受到在融合环境中可以令人满意地工作的连接技术的限制。另外，在诸如聚变反应堆的多材料系统中，由于预期的热膨胀失配，连接异种材料（陶瓷-金属）可能更具挑战性。本文介绍了一种这样的技术，该技术有望通过使用通过连续进行膜/层间沉积和热处理来实现有限的次表面反应性合金化的成分分级来降低巨大的热膨胀失配的影响。这里简要介绍了该技术对SiC-V接头的适用性，以及在均匀加热和梯度加热情况下对这些接头的机械性能进行建模的结果。

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