Effect of neutron irradiation on low temperature toughness of TiC-dispersed molybdenum alloys
Effect of neutron irradiation on low temperature toughness of TiC-dispersed molybdenum alloys
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中子辐照对TiC弥散钼合金低温韧性的影响
DOI：
10.1016/s0022-3115(96)00427-8
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发表时间：
1996
影响因子：
3.1
通讯作者：
Y. Hiraoka
中科院分区：
文献类型：
--
作者：
Y. Kitsunai;H. Kurishita;M. Narui;H. Kayano;Y. Hiraoka
研究了中子辐照对最近开发的用于聚变应用的TiC弥散钼合金的低温韧性的影响。在JMTR中，在573和773 K之间的受控循环温度下，对TiC添加量为1.0 wt%和TZM的两种合金的小型弯曲棒试样（1 × 1 × 20 mm）进行8 × 1023 n/m2（En> 1 MeV）辐照，并通过冲击三点弯曲进行测试。结果表明，在辐照条件下，所开发的合金具有比TZM高得多的韧性，并且韧性随着TiC含量的增加而增加。此外，具有1.0重量% TiC的合金的延展性通过照射急剧增加，约5倍，而不管是否发生显著的照射硬化。这种显着的延性bX射线照射是第一次发现的材料，并讨论了与辐射增强沉淀。
The effect of neutron irradiation on the low temperature toughness of TiC-dispersed molybdenum alloys that were recently developed for fusion applications was studied. Miniaturized bend bar specimens, 1 by 1 by 20 mm, of both the alloys with TiC additions to 1.0 wt% and TZM were irradiated to 8 × 1023n/m2(En> 1 MeV) at controlled cyclic temperatures between 573 and 773 K in the JMTR and were tested by impact three-point bending. It was shown that under irradiation conditions the developed alloys exhibited much higher toughness than TZM and the toughness increased with increasing TiC content. In addition, the ductility of the alloy with 1.0 wt% TiC increased drastically by the irradiation, by about five times, regardless of the occurrence of significant irradiation hardening. This notable ductilization bX irradiation is the first found in materials and is discussed in connection with radiation enhanced precipitates.