Direct fabrication of single-crystal-like structure using quasi-continuous-wave laser additive manufacturing
Direct fabrication of single-crystal-like structure using quasi-continuous-wave laser additive manufacturing
复制标题
使用准连续波激光增材制造直接制造类单晶结构
DOI：
10.1016/j.jmst.2020.04.043
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发表时间：
2021-01-10
影响因子：
10.9
通讯作者：
Song, Lijun
中科院分区：
文献类型：
--
作者：
Xiao, Hui;Cheng, Manping;Song, Lijun
The synchronously periodic re-melting of molten pool was firstly introduced in additive manufacturing to promote the epitaxial growth of columnar structure using a novel quasi-continuous-wave (QCW) laser. The epitaxial growth of columnar structure was intensified and the single-crystal-like sample with highly oriented "zigzag" columnar grains was produced. The modified molten-pool geometry and the synchronously high-frequency re-melting of the molten pool contribute to the formation of single-crystal-like structure. This work reports a new route to promote the continuously epitaxial growth of dendrites for fabrication of single-crystal-like sample. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
