Variation of crystal orientation during epitaxial growth of dendrites by laser deposition
Variation of crystal orientation during epitaxial growth of dendrites by laser deposition
复制标题
激光沉积枝晶外延生长过程中晶体取向的变化
DOI:
10.1016/j.jmst.2017.05.002
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发表时间:
2017-05
期刊:
影响因子:
--
通讯作者:
Hu Zhuang-Qi
中科院分区:
文献类型:
--
作者:
Wang Guo-Wei;Liang Jing-Jing;zhou Yi-Zhou;Jin Tao;Sun Xiao-Feng;Hu Zhuang-Qi
A nickel-based superalloy was deposited onto a single crystal substrate based on epitaxial laser metal forming (E-LMF). The microstructure development in two depositions has been researched. For the first time, the crystal orientation of dendrites varying beyond 20° was found when the dendrites deflected in deposition. In addition, a new grain boundary was found between different orientation dendrites in a grain, and the detected grain boundary angle was 23°. The result shows that flowing field in laser pool is responsible for this phenomenon.
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