Problems of Analyzing Microstructure Images in Assessing the Impact of Technological Parameters of Combined Strain Wave Hardening on the Quality of the Surface Layer

The problems of analysis of metallographic images and the way to solve them using modern software for the analysis of metallographic images are described. In this paper, we consider the problem of analyzing the microstructure of parts obtained as a result of alternating surfacing operations by the 3DMP method and wave thermal deformation hardening (HTSH), based on the expansion of the technological capabilities of the previously known wave work hardening (WSH). The analysis of the characteristic dimensions of the structural components of the synthesized samples, hardened according to different strategies of HTFS, is carried out in the SIAMS software package in the "Multi-phase analysis" section. A brief explanation of the features of using the software for a particular case is given. As a result of metallographic studies using the SIAMS software of the microstructure of parts obtained as a result of alternating surfacing operations by the 3DMP method and HTDU, the characteristic sizes of particle colonies and fine particles of crushed dendrites in each deposited layer were determined, and the nature of the distribution of structural components over the cross section of the samples in the direction of surfacing was revealed.

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Finite Element Modeling and Visualization of Additive Ring Growing by 3DMP Method

Kirichek¹,

Barinov²,

Fedonina³

2020

Proceedings of the 30th International Conference on Computer Graphics and Machine Vision (GraphiCon 2020). Part 2

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The aim of the work is to obtain a finite element model of the additive growing process in the general case of a complex-shaped product using the 3DMP (3D Metal Print) method of wire deposition / surfacing by gas metal arc welding, visualization of the forming temperature fields. The problem is solved using the example of an elementary ring by creating a scalable model in the Ansys software package. The stages of creating a finite element model as well as the results of its approbation in the analysis of temperatures are given. The model visualizes the nature of the influence of the deposition / surfacing parameters on the temperature fields that are formed and dynamically change with the movement of the wire feedstock. In this case, the conditions of additive free shaping of a closed-form product are of no small importance. It becomes possible to visually assess the degree of heating and the volume of heated metal in the hazardous area, proceed further to the calculation of stress and strain fields in the grown product, and choose the correct technological parameters of the process. The obtained visual information makes it possible to perform a qualitative and quantitative assessment of the additive shaping result, to determine the required intensity of heat removal, which contributes to the grown product quality improvement as a whole.

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Problems of Analyzing Microstructure Images in Assessing the Impact of Technological Parameters of Combined Strain Wave Hardening on the Quality of the Surface Layer

Cited by 3 publications

References 5 publications

Selection of the pulse generator for wave deformation hardening

Selection of the pulse generator for wave deformation hardening

The Problems of Analyzing the Dependence of the Sizes of Structural Components of Samples Synthesized by the 3DMP Method on the Strategy of Wave Thermal Deformation Hardening

Finite Element Modeling and Visualization of Additive Ring Growing by 3DMP Method

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