Tungsten foil laminate for structural divertor applications – Basics and outlook
Tungsten foil laminate for structural divertor applications – Basics and outlook
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DOI：
10.1016/j.jnucmat.2012.01.010
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发表时间：
2012-04
影响因子：
3.1
通讯作者：
J. Reiser;M. Rieth;B. Dafferner;A. Hoffmann
中科院分区：
文献类型：
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作者：
J. Reiser;M. Rieth;B. Dafferner;A. Hoffmann
几年来，人们一直在尝试合成一种具有低脆韧转变温度和高断裂韧性的钨材料，可用于结构部件。在这项工作中，我们展示了如何实现钨的延展性：通过合成由钨箔制成的层压板。本文表明，钨箔在室温下进行拉伸试验是延性。现在的想法是通过组装几层这种延展性钨箔来将钨箔的延展性材料特性扩展到大块。通过这样做，可以合成钨层压板。该层压板的特征在于夏比冲击试验，并将结果与钨板材料进行比较。钨层压板的结果非常出色：室温下接近2 J的能量吸收，100°C下为5 J，300°C下为10 J（根据KLST标准测量）。更令人震惊的是用再结晶钨箔（退火1小时/1800°C）合成的钨层压板获得的结果。在此，脆韧转变是在500°C下，这与再结晶板材料（lh/2000°C）相比是至少500°C的改进。作为最后一步，我们介绍了第一个可用于结构应用的韧性钨管：由钨箔制成的钨管。
It has been attempted for several years to synthesize a tungsten material with a low brittle-to-ductile transition temperature and a high fracture toughness that can be used for structural parts. In this work, we show how to realize the ductilization of tungsten: by synthesizing a laminate made of tungsten foil. This paper shows that tungsten foil is ductile in a tensile test performed at room temperature. The idea now is to expand the ductile material properties of the tungsten foil to a bulk, by assembling several layers of this ductile tungsten foil. By doing this, a tungsten laminate can be synthesized. This laminate is characterized by a Charpy impact test and the results are compared to tungsten plate material. The results of the tungsten laminate are excellent: nearly 2J of energy absorption at room temperature, 5J at 100°C and 10J at 300°C (measured by KLST standard). Even more overwhelming are the results obtained from a tungsten laminate synthesized with recrystallized tungsten foil (annealed for 1h/1800°C). Here, the brittle ductile transition is at 500°C, which is an improvement of at least 500°C compared to recrystallized plate material (1h/2000°C). As a last step we present the first ductile tungsten pipe that can be used for structural applications: a tungsten pipe made of tungsten foil.