Microstructure Development in Neutron Irradiated Tungsten Alloys
Microstructure Development in Neutron Irradiated Tungsten Alloys
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DOI：
10.2320/matertrans.mbw201025
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发表时间：
2011-07
影响因子：
1.2
通讯作者：
Takashi Tanno;M. Fukuda;S. Nogami;A. Hasegawa
中科院分区：
文献类型：
--
作者：
Takashi Tanno;M. Fukuda;S. Nogami;A. Hasegawa
这项工作的目的是研究中子辐照条件，特别是温度，对辐照钨铼 (W-Re) 合金辐照硬化和微观结构发展的影响。中子辐照在 JOYO 中进行，温度范围为 400 至 750 °C，最高为 1.54 dpa。使用 TEM 进行显微维氏硬度测试和微观结构观察。 538℃辐照的WRe合金的辐照硬化明显大于其他温度辐照的辐照硬化。在538℃辐照的纯钨和钨铼合金中分别观察到细小的孔隙和细小的针状或板状析出物，且具有高数密度。精细复杂的微观结构似乎是特征辐射硬化的原因。 [doi:10.2320/matertrans.MBW201025]
The aim of this work is to investigate the influence of neutron irradiation condition, especially temperature, on irradiation hardening and microstructure development in irradiated tungsten-rhenium (W-Re) alloys. Neutron irradiations were carried out in JOYO at the range of 400 to 750 � C, up to 1.54 dpa. Micro Vickers hardness tests and micro structural observations using a TEM were performed. Irradiation hardening of WRe alloys irradiated at 538 � C were clearly larger than those irradiated at other temperatures. Fine voids and fine needle- or plate-like precipitates were observed in pure W and W-Re alloys irradiated at 538 � C, respectively, with high number density. The fine complex microstructure seems to be the cause of the characteristic irradiation hardening. [doi:10.2320/matertrans.MBW201025]