Jiaxuan Cai, Le Wan, Shihong Shi, Jie Wu, Qiang Yang, Tuo Shi, Mengying Cheng. Effects of temperature field on properties of micro-structure of AlSi10Mg with laser metal deposition[J]. Infrared and Laser Engineering, 2022, 51(5): 20210366
- Infrared and Laser Engineering
- Vol. 51, Issue 5, 20210366 (2022)
Fig. 1. Schematic of Ar-supplied protective hollow beam deposition nozzle
Fig. 2. Micromorphology of AlSi10Mg powder
Fig. 3. Infrared thermal imager to collect temperature field data and thermocouple to collect temperature data of substrate
Fig. 4. Dimension of tensile sample
Fig. 5. Parameter quantitative characterization process of temperature field with typical molten pool
Fig. 6. Curves of quantitative parameters of temperature field and laser absorptivity with laser power
Fig. 7. Comparison of the temperature fields between 600 W laser power and 900 W laser power. (a), (b) 2D infrared thermogram; (c), (d) Magnifed molten pool 2D infrared thermogram with isotherm
Fig. 8. Comparison of the temperature felds between 600 W and 900 W laser power. (a), (b) 3D temperature point cloud map; (c), (d) Temperature curves of vertical and horizontal to the scanning direction
Fig. 9. [in Chinese]
Fig. 9. Microstructures of as-deposited sample under different A T. (a) 631.8 ℃/P =600 W; (b) 948.1 ℃/P =900 W
Fig. 10. α -aluminum grain size (a) and micro-hardness (b) of LMD parts with different P /A T
Fig. 11. As-deposited thin-wall samples with different A T. (a) 857.7 ℃; (b) 1428.2 ℃
Fig. 12. Porosity and ultimate tensile strength UTS (MPa) of as-deposited thin-wall samples with different A T
Fig. 13. Tensile properties of as-deposited samples with molten pool A T of 857.7 ℃
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Table 1. Chemical composition of AlSi10Mg alloy powder
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