首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Effect of annealing on microstructure, texture and hardness of ITER-specification tungsten analyzed by EBSD, vickers micro-hardness and nano-indentation techniques
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Effect of annealing on microstructure, texture and hardness of ITER-specification tungsten analyzed by EBSD, vickers micro-hardness and nano-indentation techniques

机译:EBSD,VICKER微硬度和纳米压痕技术分析的浸入钨钨的微观结构,质地和硬度的影响

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Tungsten and its alloys have been extensively studied to be used as materials for plasma facing components (PFCs) in future nuclear fusion reactors. Under fusion operating conditions, the surface of PFCs will experience high heat flux exposure which will affect some microstructural features of the material. In the present work, the effect of annealing temperature on microstructure, texture and mechanical behavior of ITER-specification commercial pure tungsten was investigated by combining Electron Backscatter Diffraction (EBSD), Vickers micro-hardness and nano-indentation techniques. The samples were analyzed in the as-received and in the annealed conditions. Annealing was done for 1 hat three different temperatures: 1300 degrees C, 1500 degrees C and 1800 degrees C. Three stages in microstructural evolution were observed: recovery at 1300 degrees C, recrystallization at 1500 degrees C and grain growth at 1800 degrees C. As the annealing temperature increases and recrystallization takes place, alpha-fiber texture components are strengthened. Simultaneously, a reduction in both Vickers and nano-indentation hardness is found. (C) 2019 Elsevier B.V. All rights reserved.
机译:已经广泛地研究了钨及其合金以用作未来核聚体反应堆中的等离子体面向浆料部件(PFC)的材料。在融合操作条件下,PFC的表面将体验高热量曝光,这会影响材料的一些微观结构特征。通过结合电子反向散射衍射(EBSD),维氏微型硬度和纳米凹槽,研究了退火温度对浸渍商业纯钨的微观结构的微观结构,质地和力学行为的影响。在接收和退火条件下分析样品。退火为1颗帽子进行三种不同的温度:1300℃,1500℃和1800℃。观察到微观结构演化中的三个阶段:在1300℃下回收,再结晶为1500℃并在1800℃下晶粒生长。发生退火温度和再结晶,加强了α-纤维纹理组分。同时,发现维氏和纳米压痕硬度的降低。 (c)2019 Elsevier B.v.保留所有权利。

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