Self-ion irradiation response of (CoCrFeNi)94Ti2Al4 alloy containing coherent nanoprecipitates
Self-ion irradiation response of (CoCrFeNi)94Ti2Al4 alloy containing coherent nanoprecipitates
复制标题
含有相干纳米沉淀物的(CoCrFeNi)94Ti2Al4合金的自离子辐照响应
DOI：
10.1016/j.jnucmat.2021.152889
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发表时间：
2021-06
影响因子：
3.1
通讯作者：
Jin K.
中科院分区：
文献类型：
--
作者：
Zheng Y.;Lu W.;Qian F.;Jia N.;Dou Y.;He X.;Yang W.;Wang J.;Xue Y.;Jin K.
摘要：为了研究相干纳米沉淀物对辐照诱导高熵合金显微组织变化的影响以及纳米沉淀物在辐照下的稳定性，采用2.7 MeV Fe离子在823 K下辐照单相CoCrFeNi和含CoCrFeNi的94Ti2Al4合金。随着L12相干纳米沉淀的引入，辐照诱导的位错环的尺寸明显减小，并且延迟了断裂环的不断裂。与CoCrFeNi中Ni和Co都向环中分离不同，在（CoCrFeNi）94Ti2Al4中，Ni在环中的富集受到纳米沉淀物共存的抑制。此外，虽然辐照后纳米沉淀物有轻微的粗化和溶解现象，但与传统镍基合金相比，其稳定性得到了提高。
Abstract In order to investigate the impact of coherent nanoprecipitates on the irradiation-induced microstructural change in high-entropy alloys and the stability of nanoprecipitates under irradiation, the single-phase CoCrFeNi and the coherent nanoprecipitate-containing (CoCrFeNi)94Ti2Al4 alloys were irradiated with 2.7 MeV Fe ions at 823 K. With the introduction of L12 coherent nanoprecipitates, the size of irradiation-induced dislocation loops is significantly reduced and the unfaulting of faulted loops is delayed. Unlike that both Ni and Co are segregated towards the loops in CoCrFeNi, the enrichment of Ni at loops is suppressed in (CoCrFeNi)94Ti2Al4 with the co-existence of nanoprecipitates. Furthermore, although minor coarsening and dissolution of nanoprecipitates are observed after irradiation, the stability is enhanced compared with some conventional Ni-based alloys.
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影响因子：
3.1
作者：
Shi Shi-Shi;M. He;K. Jin;H. Bei;I. Robertson
通讯作者：
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影响因子：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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