TY - JOUR
T1 - Effects of deposition variables on molten pool temperature during laser engineered net shaping of Inconel 718 superalloy
AU - Liu, Zhichao
AU - Li, Tao
AU - Ning, Fuda
AU - Cong, Weilong
AU - Kim, Hoyeol
AU - Jiang, Qiuhong
AU - Zhang, Hongchao
N1 - Publisher Copyright:
© 2019, Springer-Verlag London Ltd., part of Springer Nature.
PY - 2019/5/19
Y1 - 2019/5/19
N2 - The molten pool temperature during laser engineered net shaping (LENS) could directly affect the microstructure and phase compositions of materials in the molten pool, thereby affecting the mechanical properties of the fabricated parts. To achieve a well-built solid structure, the research on fundamentals and methods of molten pool thermal behavior monitoring is of great significance. Using a high-resolution infrared camera, this paper realized real-time temperature tracking of Inconel 718 deposition in the LENS process. The effects of deposition variables, such as laser power and scanning speed, on the molten pool temperature and cooling rate have been investigated. In addition, the effects of the molten pool temperature on the molten pool depth and dendrite arm spacing (DAS) have been analyzed. The results suggest that the molten pool temperature increases with increasing of the laser power while it drops first and then rises with increasing of the scanning speed. The molten pool temperature increases nonlinearly with increasing of the number of layers during the material deposition process.
AB - The molten pool temperature during laser engineered net shaping (LENS) could directly affect the microstructure and phase compositions of materials in the molten pool, thereby affecting the mechanical properties of the fabricated parts. To achieve a well-built solid structure, the research on fundamentals and methods of molten pool thermal behavior monitoring is of great significance. Using a high-resolution infrared camera, this paper realized real-time temperature tracking of Inconel 718 deposition in the LENS process. The effects of deposition variables, such as laser power and scanning speed, on the molten pool temperature and cooling rate have been investigated. In addition, the effects of the molten pool temperature on the molten pool depth and dendrite arm spacing (DAS) have been analyzed. The results suggest that the molten pool temperature increases with increasing of the laser power while it drops first and then rises with increasing of the scanning speed. The molten pool temperature increases nonlinearly with increasing of the number of layers during the material deposition process.
KW - Inconel 718
KW - Infrared camera
KW - Laser engineered net shaping
KW - Molten pool temperature measurement
UR - http://www.scopus.com/inward/record.url?scp=85059589645&partnerID=8YFLogxK
U2 - 10.1007/s00170-018-03245-1
DO - 10.1007/s00170-018-03245-1
M3 - Article
AN - SCOPUS:85059589645
SN - 0268-3768
VL - 102
SP - 969
EP - 976
JO - International Journal of Advanced Manufacturing Technology
JF - International Journal of Advanced Manufacturing Technology
IS - 1-4
ER -