One-dimensional migration of interstitial clusters in SUS316L and its model alloys under electron irradiation
One-dimensional migration of interstitial clusters in SUS316L and its model alloys under electron irradiation
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DOI：
10.1080/14786435.2011.642318
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发表时间：
2012-03
影响因子：
1.6
通讯作者：
Y. Satoh;H. Abe;S.W. Kim
中科院分区：
文献类型：
--
作者：
Y. Satoh;H. Abe;S.W. Kim
利用高压电子显微镜原位观察了奥氏体不锈钢SUS 316L及其模型合金Fe-18 Cr-13 Ni、Fe-18 Cr-13 Ni-0.012C和Fe-18 Cr-13 Ni-1.7Mn（质量百分比）中间隙原子团簇的一维迁移。这种一维迁移被证实发生沿着110纳米方向在所有这些合金在1250-kV电子辐照下，在室温下，在不规则的间隔。一维迁移的频率与电子束强度成正比，在相同的辐照强度下，一维迁移的频率约为高纯铁的1/10。四种合金中的一维迁移距离均小于10 nm，远小于高纯铁中的一维迁移距离。四种合金中一维迁移的频率和距离没有明显的差异，表明微量溶质/杂质元素对SUS 316L的一维迁移没有明显的影响。
The one-dimensional (1D) migration of interstitial clusters in austenitic stainless steel SUS316L and its model alloys, namely, Fe–18Cr–13Ni, Fe–18Cr–13Ni–0.012C, and Fe–18Cr–13Ni–1.7Mn (mass %), was examined using in situ observation by high-voltage electron microscopy. Such 1D migration was confirmed to occur along the ⟨110⟩ direction at irregular intervals in all these alloys under 1250-kV electron irradiation at room temperature. The frequency of 1D migration was found proportional to electron beam intensity, and was about 1/10 that in high-purity iron under the same irradiation intensity. The distance of 1D migration in the four alloys was less than 10 nm, which was much shorter than that in high-purity iron. No clear difference in the frequency or distance of 1D migration was observed among the four alloys, suggesting that minor solute/impurity elements have no apparent effect on 1D migration in SUS316L.