Comparison of swelling and cavity microstructural development for type 316 stainless steel irradiated in EBR-II and HFIR
Comparison of swelling and cavity microstructural development for type 316 stainless steel irradiated in EBR-II and HFIR
复制标题
316 型不锈钢在 EBR-II 和 HFIR 中辐照后的膨胀和空洞微观结构发展比较
DOI：
10.1016/0022-3115(84)90602-0
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发表时间：
1984
影响因子：
3.1
通讯作者：
P. Maziasz
中科院分区：
文献类型：
--
作者：
P. Maziasz
在EBR-II(高达75dpa)和HFIR(高达61dpa)中，20%冷加工316不锈钢(316)在500-650°C辐照一次加热后的膨胀和空洞组织的比较表明，在HFIR中发现较高的氦生成量抑制了空洞的生长和膨胀。在HFIR中，CW 316中形成了许多小气泡，而不是空洞，并阻止了空洞的转化。然而，在EBR-II和HFIR中500-550°C辐照的溶液退火(SA)316的相似比较得出了相反的结论：在HFIR中，氦促进了空穴膨胀。与EBR-II相比，在HFIR中，SA 316中有更多的气泡在低通量下形核，但双峰分布和快速粗化最终导致高膨胀，因为HFIR中含有高浓度的基质和与沉淀相关的空洞。CW 316在HFIR中的抗膨胀性的一个关键似乎是在进化的早期阶段开发了一个充分以空腔为主的下沉系统。
Comparison of swelling and cavity microstructures for one heat of 20% cold-worked (CW) type 316 stainless steel (316) irradiated at 500–650°C in EBR-II (up to 75 dpa) and HFIR (up to 61 dpa) suggests that void growth and swelling are suppressed by the higher helium generation found in HFIR. Instead of voids, many small bubbles develop in the CW 316 in HFIR and resist conversion to voids. However, similar comparison of solution-annealed (SA) 316 irradiated in EBR-II and HFIR at 500–550°C leads to an opposite conclusion; void swelling is enhanced by helium in HFIR. Many more bubbles nucleate in SA 316 at low fluence in HFIR compared to EBR-II, but bimodal distributions and rapid coarsening eventually lead to high swelling due to high concentrations of matrix and precipitate-associated voids in HFIR. A key to the swelling resistance of the CW 316 in HFIR appears to be the development of a sufficiently cavity-dominated sink system in the early stages of evolution.