Method for establishing material gene library based on laser micro metallurgy
A technology for establishing methods and gene banks, applied in the field of laser additive manufacturing, can solve the problems of not being able to fully utilize laser additive manufacturing technology, microstructure and performance, etc., and achieve the effects of easy application and promotion, slow speed and simple steps
Active Publication Date: 2019-05-14
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 metallurgy. The method for establishing the material gene library based on the laser micro metallurgy comprises the steps that 1, a laser micro metallurgical system is established; 2, a metal powder type is determined, and sufficient mass of various types of metal powders are prepared; 3, a discharging device is moved; 4, total mass of a mixed powder is fixed, and output of the various types of metal powders is controlled according to the mass ratio of the various types of metal powders; 5, the various types of metal powders are mixed and discharged; 6, the mixing powders are discharged in all grooves on a substrate; 7, laser processing parameters of a laser generation subsystem are set, and micro metallurgy is performed; 8, a corresponding relationship between composition of a laser addictive alloy sample and a microscopic structure, and the laser additive alloy sample is subjected to a micro-nano indentation test; 9, a BP neural network model is trained; and 10, a laser additive alloy sample material gene library is established. According to the method for establishing the material genelibrary based on the laser micro metallurgy, the mixed powders preset in the grooves on the substrate is subjected to a fix-point and micro metallurgy through a high-energy laser beam, and micro alloying of the metal materials is realized based on the strong convection of the laser molten 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