Creep Lifetime Analysis on First Wall Structure Material for CFETR

Creep Lifetime Analysis on First Wall Structure Material for CFETR
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CFETR 第一壁结构材料的蠕变寿命分析

DOI:
10.1007/s10894-015-9948-x
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发表时间:
2015-06
影响因子:
1.1
通讯作者:
Shi Jingyi
Shi Jingyi
中科院分区:
工程技术3区
文献类型:
--
作者:
Zhang Xiansheng;Peng Lei;Ma Bing;Bai Yongan;Shi Jingyi

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中国聚变工程试验堆是类​​似ITER的超导托卡马克反应堆,具有较大的工作时间系数。包层结构材料的寿命对聚变反应堆的安全性、可靠性和经济性起着重要作用,在工程设计中应认真考虑。高温始终是聚变反应堆概念设计的主要目标之一。而结构材料在高温下的蠕变性能对于失效机制和寿命分析具有重要意义。对候选结构材料进行了氦冷却固体增殖毯第一壁的蠕变寿命分析。结果发现,316L(N) 具有比 Eurofer 更好的蠕变寿命性能。为了在 0.3 MW/m2 表面热通量下获得可接受的蠕变寿命,可能存在改变壁厚以及改进第一壁的冷却能力和出口温度的空间。
China fusion engineering test reactor is an ITER-like superconducting tokamak reactor, which has a big duty time factor. Lifetime of structure material in blanket play an important role in the safety, reliability and economy of fusion reactor, which should be careful considered in the engineering design. High temperature is always one of the main targets in the fusion reactor concept design. And creep performance under high temperature of structure material is important in the failure mechanisms and lifetime analysis. Creep lifetime analysis of first wall in helium cooled solid breeder blanket was conducted for candidate structural materials. It is found that 316L(N) have a better creep lifetime performance than Eurofer. For an acceptable creep lifetime at 0.3 MW/m2surface heat flux, there could be space for wall thickness change and improvement of cooling ability and outlet temperature of first wall.
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