A method for establishing a material gene library based on laser micrometallurgy
A technology for establishing a method and a gene bank, applied in the field of laser additive, can solve the problems of insufficient use of laser additive manufacturing technology, different microstructures and properties, etc., to achieve the effect of easy application and promotion, overcoming slow speed and simple steps
Active Publication Date: 2020-05-12
CHANGAN UNIV
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Problems solved by technology
In the process of laser additive manufacturing components, due to the non-equilibrium structure and micro-region stress concentration caused by the rapid melting characteristics of high-energy laser beams, the microstructure and properties of laser additive manufacturing alloys are different from traditional processing technologies, so they cannot Give full play to the advantages of laser additive manufacturing technology
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[0046] Such as Figure 1 to Figure 7 As shown, a method for establishing a material gene bank based on laser micro-area metallurgy of the present invention comprises the following steps:
[0047] Step 1. Build a laser micro-area metallurgy system: place the base 10 horizontally on the test bench, put mixed powder 14 into the base 10 through the feeding subsystem, and use the laser generation subsystem 12 to micro-metallurgy the mixed powder 14 into a laser additive alloy test Sample 15, the substrate 10, the feeding subsystem and the laser generating subsystem 12 constitute a laser micro-area metallurgy system;
[0048] The base body 10 is a ceramic base body, and the ceramic base body is provided with N spherical grooves 11 arranged in an array. The value of depth h is The distance between two adjacent grooves 11 is 0.5 cm to 1 cm, where N is a positive integer not less than 100;
[0049] It should be noted that the base body 10 adopts a ceramic base body to avoid wetting...
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Abstract
The invention discloses a method for establishing a material gene library based on laser micro-area metallurgy, including steps: 1. Construct a laser micro-area metallurgy system; 2. Determine the type of metal powder and prepare various metal powders of sufficient quality; 3. Move the feeder; 4. Fix the total mass of the mixed powder and control the output of various metal powders according to the mass ratio of various metal powders; 5. Mix and release various metal powders; 6. Complete the mixing powder in all grooves on the substrate Putting in; 7. Set the laser processing parameters of the laser generation subsystem and perform micro-area metallurgy; 8. Establish the corresponding relationship between the composition of the laser-added alloy sample and the microstructure, and perform micro-nano indentation on the laser-added alloy sample Test; 9. Training BP neural network model; 10. Establishment of laser additive alloy sample material gene library. The high-energy laser beam of the present invention smelts the mixed powder pre-placed in the groove on the base body at a fixed point and micro-area, and realizes micro-area alloying of metal materials based on the strong convection of the laser melting pool.
Description
technical field [0001] The invention belongs to the technical field of laser material addition, and in particular relates to a method for establishing a material gene library based on laser micro-area metallurgy. Background technique [0002] Laser additive manufacturing has developed rapidly in a brand-new manufacturing method, realizing the concept transformation from the traditional "subtractive manufacturing, equal material manufacturing" to "additive manufacturing". Based on powder, it uses high-energy laser beams to form solid parts layer by layer through cladding. Laser additive manufacturing technology greatly reduces the time from product development to market launch, and greatly reduces product development costs, especially making product manufacturing faster, flexible, personalized, and diversified. It has incomparable advantages in small batch production. In the process of laser additive manufacturing components, due to the non-equilibrium structure and micro-r...
Claims
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IPC IPC(8): B22F3/105G01N3/40G01N23/22B33Y10/00B33Y30/00B33Y50/00
CPCY02P10/25
Inventor 张凤英胡腾腾邱莹王坤王刚艾诚
Owner CHANGAN UNIV