Irradiation-enhanced α′ precipitation in model FeCrAl alloys
Irradiation-enhanced α′ precipitation in model FeCrAl alloys
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DOI：
10.1016/j.scriptamat.2016.02.002
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发表时间：
2016-04-15
影响因子：
6
通讯作者：
Field, K. G.
中科院分区：
文献类型：
--
作者：
Edmondson, P. D.;Briggs, S. A.;Field, K. G.
不同成分的FeCrAl模型合金（Fe（10-18）Cr（10-6）Al at.%）已经在类似于320的中子辐照下辐照到类似于7个位移/原子（dpa）的损伤水平，以使用原子探针层析成像研究对辐照诱导的富Cr α '沉淀物形成的成分影响。在所有合金中，观察到这些沉淀物的显著数密度。原子簇的组成进行了研究，发现原子簇的平均Cr含量在51.1和62.5at.%之间取决于初始组合物。这显著低于二元FeCr合金中α '的Cr含量。还观察到Al从α '沉淀物中的显著分配。爱思唯尔有限公司出版
Model FeCrAl alloys with varying compositions (Fe(10-18)Cr(10-6)Al at.%) have been neutron irradiated at similar to 320 to damage levels of similar to 7 displacements per atom (dpa) to investigate the compositional influence on the formation of irradiation-induced Cr-rich alpha' precipitates using atom probe tomography. In all alloys, significant number densities of these precipitates were observed. Cluster compositions were investigated and it was found that the average cluster Cr content ranged between 51.1 and 62.5 at.% dependent on initial compositions. This is significantly lower than the Cr-content of alpha' in binary FeCr alloys. Significant partitioning of the Al from the alpha' precipitates was also observed. Published by Elsevier Ltd.