Use of Impact Treatment for Structural Modification and Improvement of Mechanical Properties of CuAl7 Bronze Obtained by Electron Beam Additive Manufacturing (EBAM)

Филиппов, А. В.; Khoroshko, E. S.; Shamarin, N. N.; Колубаев, Е. А.; Tarasov, S. Yu.

doi:10.1007/s11182-023-02864-w

Cited by 1 publication

(2 citation statements)

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“…The most frequent courses of events under such impacts are phase transformations and recrystallizations. In [29], using a model experiment as an example, a positive effect of interlayer impact treatment on the mechanical characteristics of CuAl7 bronze obtained via EBAM is shown. In particular, the use of interlayer impact treatment promotes the formation of equiaxed recrystallized grains with annealing twin boundaries.…”

Section: Introductionmentioning

confidence: 96%

“…et al distinguish them as three stages: thermal modeling, metallurgical modeling, and mechanical modeling [31]. To take into account deformations during welding and surfacing, it is necessary to carry out thermomechanical modeling [24][25][26][27][28][29]32,33]. The finite element method allows the prediction of residual stresses and deformations that depend on temperature gradients [34].…”

Section: Introductionmentioning

confidence: 99%

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Aluminum Bronze Crystallization on Deformed Base during Electron Beam Additive Manufacturing

Nikonov

Лычагин

Bibko

et al. 2023

Metals

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To obtain products by using additive manufacturing (AM) methods, it is necessary to take into account the features of the formed internal structure of the material. The internal structure depends on the 3D printing parameters. To predict it, it is effective to use computer modeling methods. For this purpose, using the example of aluminum bronze, the influence of the base structure and heat input during surfacing on the grain structure of the deposited layers was studied. To create numerical models, we used data obtained from electron backscatter diffraction (EBSD) analysis of samples. The heterogeneity of the formation of the structure in each selected zone is established, which indicates the heterogeneity of heat input in local areas of the material in one mode of surfacing. For typical cases of crystallization, modeling using the molecular dynamics (MD) method of crystallization processes with different heat inputs to the base with characteristics specified based on experimental data was carried out. It was established that the amount of heat input determines the degree of melting and the inherited defectiveness of growing crystals. The formation of misorientation boundaries and crystallization centers of new grains is determined by the conditions of joint growth of grains with given crystallographic parameters of the computational model. The grain structure obtained as a result of simulation is consistent with the experimentally observed structure of the samples.

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Section: Introductionmentioning

confidence: 96%