Infrared and Laser Engineering, Volume. 51, Issue 5, 20210366(2022)

Effects of temperature field on properties of micro-structure of AlSi10Mg with laser metal deposition

Jiaxuan Cai1, Le Wan1、*, Shihong Shi1, Jie Wu1, Qiang Yang2, Tuo Shi3, and Mengying Cheng1
Author Affiliations
  • 1Institute of Laser Manufacturing Technology, School of Mechanical and Electrical Engineering, Suzhou University, Suzhou 215021, China
  • 2Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi’an 710065, China
  • 3School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, China
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    Figures & Tables(15)
    Schematic of Ar-supplied protective hollow beam deposition nozzle
    Micromorphology of AlSi10Mg powder
    Infrared thermal imager to collect temperature field data and thermocouple to collect temperature data of substrate
    Dimension of tensile sample
    Parameter quantitative characterization process of temperature field with typical molten pool
    Curves of quantitative parameters of temperature field and laser absorptivity with laser power
    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
    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
    [in Chinese]
    Microstructures of as-deposited sample under different AT. (a) 631.8 ℃/P=600 W; (b) 948.1 ℃/P=900 W
    α-aluminum grain size (a) and micro-hardness (b) of LMD parts with different P/AT
    As-deposited thin-wall samples with different AT. (a) 857.7 ℃; (b) 1428.2 ℃
    Porosity and ultimate tensile strength UTS (MPa) of as-deposited thin-wall samples with different AT
    Tensile properties of as-deposited samples with molten pool AT of 857.7 ℃
    • Table 1. Chemical composition of AlSi10Mg alloy powder

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      Table 1. Chemical composition of AlSi10Mg alloy powder

      ElementAlSiMgFeTiNiMnCuP
      Composition (mass fraction) Bal.9.99%0.44%0.43%0.05%0.009%0.0086%0.011%0.0085%
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    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

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    Paper Information

    Category: Lasers & Laser optics

    Received: Jun. 2, 2021

    Accepted: --

    Published Online: Jun. 14, 2022

    The Author Email: Le Wan (wanle9@qq.com)

    DOI:10.3788/IRLA20210366

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