The thermal stability of dispersion-strengthened tungsten as plasma-facing materials: a short review
The thermal stability of dispersion-strengthened tungsten as plasma-facing materials: a short review
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作为面向等离子体材料的弥散强化钨的热稳定性：简短回顾
DOI：
10.1007/s42864-019-00022-9
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发表时间：
2019-09
期刊：
影响因子：
--
通讯作者：
C.S. Liu
中科院分区：
文献类型：
--
作者：
T. Zhang;Z.M. Xie;J.F. Yang;T. Hao;C.S. Liu
聚变能发展的一项关键挑战是面向等离子体的材料。钨基材料因其高熔化温度、高热导率、高热负荷电阻、低氚保留和低溅射产率而成为磁约束核聚变反应堆中面向等离子体组件（PFC）的有希望的候选者。在聚变反应堆中，PFC 暴露在高热通量下，因为存在一些瞬态事件，例如等离子体破坏、边缘局域模式和垂直位移事件 (VDE)。特别是，在VDE中，10-100MW m−2的热通量持续时间为毫秒到几秒，可以引起再结晶，然后改变钨基等离子体材料的微观结构，导致微观结构不稳定。然后，导致材料性能的显着下降，例如机械强度和断裂韧性的降低、延性至脆性转变温度的升高以及耐辐射/高热负荷性的降低。因此，人们致力于尽可能提高钨基材料的热稳定性，如氧化物弥散强化、碳化物弥散强化、K气泡弥散强化等。在这里，通过评估各种弥散强化钨材料的再结晶温度和相应的硬度演变来回顾其热稳定性。此外，还提出了可能的发展趋势。
One key challenge for the development of fusion energy is plasma-facing materials. Tungsten-based materials are promising candidates for plasma-facing components (PFCs) in the magnetic confinement nuclear fusion reactors because of their high melt temperature, high-thermal conductivity, high-thermal load resistance, low tritium retention, and low sputtering yield. In fusion reactors, PFCs are exposed to high-thermal flux, because there are some transient events such as plasma disruptions, edge-localized modes, and vertical displacement events (VDEs). Especially, in VDEs, a heat flux of 10–100 MW m−2with duration of milliseconds-to-several seconds can induce recrystallization and then change the microstructure of tungsten-based plasma-facing materials, leading to instability of microstructures. Then, a significant degradation of material properties is caused such as a reduction of mechanical strength and fracture toughness, a rise in the ductile-to-brittle-transition temperature well, and decrease of irradiation/high-thermal load resistance. Therefore, many efforts were devoted to improve the thermal stability of tungsten-based materials as high as possible, such as oxide dispersion strengthening, carbide dispersion strengthening, and K bubbles dispersion strengthening. Here, the thermal stabilities of various dispersion-strengthened tungsten materials are reviewed by evaluating their recrystallization temperature and the corresponding hardness evolutions. In addition, the possible development trends are proposed.
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DOI：
10.1016/j.ijrmhm.2010.05.006
发表时间：
2010-11-01
影响因子：
3.6
作者：
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DOI：
10.1016/s0920-3796(01)00494-x
发表时间：
2001-11
期刊：
--
影响因子：
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