Wentao Liu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Wentao Liu has a total of 20 co-authors. Here are the top co-authors by number of shared publications:
Chengyuan Zhao
1 shared publicationHongyao Yu
1 shared publicationHua Zhang
1 shared publication- Hua Zhang
Institute for Advanced Studies in Precision Materials, Yantai University, Yantai, China
1 shared publication Jiachen Jiang
1 shared publication- Jing-Cheng Zhou
Institute for Advanced Studies in Precision Materials, Yantai University, Yantai 264005, China
1 shared publication
Latest Publications
- 14 April 2026
- Published by Elsevier in Materials Science and Engineering: A
- Vol. 963
Microstructural evolution and creep mechanism in SiCf/Ti2AlNb composites at elevated temperatures
- 14 April 2026
- Published by Elsevier in Materials Science and Engineering: A
- Vol. 963
Microstructural evolution and creep mechanism in SiCf/Ti2AlNb composites at elevated temperatures
- Open Access
Effects of Process Parameters on Defect Formation in Laser Additive Manufacturing of a Novel Ni-Based Superalloy
Laser additive manufacturing offers significant advantages for fabricating and repairing complex components. However, the complex solidification and remelting processes in nickel-based superalloys for additive manufacturing can introduce defects such as voids and cracks. Therefore, process parameters are crucial, as they significantly impact solidification and remelting, thereby affecting defect formation. In this study, laser-directed energy deposition was employed to evaluate the effects of our key process parameters on the formation of voids and cracks in a novel superalloy. The findings reveal that laser power and linear energy density significantly influence the void content and crack density. However, the influence of other process parameters on defect formation is relatively minimal. The optimal parameter space is characterized by a laser power range of 600~700 W, a linear energy density range of 60~90 J/mm and a powder feeding rate of 0.7~0.8 rpm. Moreover, the precipitation of fine MC-type carbides near the dendrites and grain-boundary misorientations within the range of 31~42° are associated with a higher propensity for crack formation. These insights provide a valuable reference for controlling the process parameters and understanding the cracking mechanisms in laser additive manufacturing of superalloys.
Open AccessEffects of Process Parameters on Defect Formation in Laser Additive Manufacturing of a Novel Ni-Based Superalloy
Laser additive manufacturing offers significant advantages for fabricating and repairing complex components. However, the complex solidification and remelting processes in nickel-based superalloys for additive manufacturing can introduce defects such as voids and cracks. Therefore, process parameters are crucial, as they significantly impact solidification and remelting, thereby affecting defect formation. In this study, laser-directed energy deposition was employed to evaluate the effects of our key process parameters on the formation of voids and cracks in a novel superalloy. The findings reveal that laser power and linear energy density significantly influence the void content and crack density. However, the influence of other process parameters on defect formation is relatively minimal. The optimal parameter space is characterized by a laser power range of 600~700 W, a linear energy density range of 60~90 J/mm and a powder feeding rate of 0.7~0.8 rpm. Moreover, the precipitation of fine MC-type carbides near the dendrites and grain-boundary misorientations within the range of 31~42° are associated with a higher propensity for crack formation. These insights provide a valuable reference for controlling the process parameters and understanding the cracking mechanisms in laser additive manufacturing of superalloys.