研究目的
Optimization of production process of Mg tubes produced with laser dieless drawing method and related microstructural analysis.
研究成果
The study successfully applied an approximate model for optimization, identifying optimal parameter combinations for producing uniformly shaped tubes with minimal critical deformation. Microstructural analysis revealed that the Laser Dieless Drawing process produces smooth tubes with unchanged grain size and good mechanical properties.
研究不足
The process is sensitive to multiple parameters, and there is a very limited number of combinations of control parameters that lead to uniformly shaped tubes. The simulation time for one run of the FEM code is almost three days, making the optimization process time-consuming.
1：Experimental Design and Method Selection
The methodology involves a laser dieless drawing process for producing tubes from AZ31 magnesium alloy, utilizing a previously developed finite element model for numerical optimization. The optimization is multi-objective, aiming to maximize the uniformity of the resulting tube and minimize its critical deformation.
2：Sample Selection and Data Sources
Samples are tubes produced from AZ31 magnesium alloy, with initial dimensions of 5 mm outer diameter and 4 mm internal diameter.
3：List of Experimental Equipment and Materials
Laser for heating, equipment for drawing and rotating the sample, finite element model for simulation, and various microscopic techniques for microstructural analysis.
4：Experimental Procedures and Operational Workflow
The process involves local laser heating of a tube with concurrent drawing and rotation. Parameters such as drawing speed and laser power are optimized using a finite element model and a Radial Basis Function meta-model.
5：Data Analysis Methods
The analysis includes microstructural examination using AFM, SEM, and light microscopy, and micromechanical testing with nanoindentation to assess hardness, elastic modulus, and viscous properties.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
