材料科学
因科镍合金
Laves相
包层(金属加工)
纹理(宇宙学)
激光器
复合材料
冶金
光学
金属间化合物
合金
图像(数学)
物理
人工智能
计算机科学
作者
Jianhua Yao,Juehui Li,Hua Ge,Yong Hu,Fei Wang,Jiaming Mao,Yunfeng Liu,Qunli Zhang,Liang Wang
标识
DOI:10.1016/j.jmrt.2023.10.176
摘要
Element segregation and texture control are two prominent challenges for Inconel 718 repairing via laser cladding. Hence, the electromagnetic field was introduced in the laser cladding of Inconel 718 in this paper. The effect of thermal-electromagnetic convection, magnetic torque, and electromigration induced by electromagnetic field on element segregation and texture of Inconel 718 was studied. Results show element segregation is suppressed due to thermal-electromagnetic convection and electromigration. More Nb and Ti are solid-dissolved into the γ matrix. The average fraction of the Laves phase reduces from 6.44% to 4.04%, while the morphology of the Laves phase is modified from long-chain-like to discrete wormlike and exhibits smaller size, owing to modified element segregation. Moreover, magnetic torque drives the rod crystal to rotate with the applied electromagnetic field and thereby the long axis of the rod crystal deviates from <001> direction. The maximum multiple of uniform density decreases from 7.54 to 2.97. This study provides a promising method to weaken texture and element segregation in laser additive manufacturing.
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