Effect of friction conditions on phase transformation characteristics in hot forging process of Ti-6Al-4 V turbine blade

Luo, Shiyuan; Wang, Qiang; Zhang, Po; Li, Jia; Liu, Qinglong

doi:10.1016/j.jmrt.2019.12.041

Cited by 20 publications

(7 citation statements)

References 36 publications

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“…In the process of establishing the FE model, the elastic deformation of the workpiece can usually be ignored under the high-temperature plastic deformation condition. Therefore, the workpiece was considered as a plastic body, while the tools were regarded as rigid bodies [ 25 , 29 , 30 ]. So as to reducing the time of FE simulation and improve the simulation accuracy, the model of FE simulation was constructed using half of the cylinder for the cylindrical samples with symmetry.…”

Section: Resultsmentioning

confidence: 99%

Simulation and Experimental Study of Dynamical Recrystallization Kinetics of TB8 Titanium Alloys

et al. 2020

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The dynamic recrystallization (DRX) behavior in the hot working of TB8 titanium alloy was studied by using the experiment and finite element simulation (FEM) method. The results showed that the DRX behavior of TB8 titanium alloys was drastically affected by the hot processing parameters. The rising deformation temperature and reducing strain rate led to an augmentation in the grain size (dDRX) and volume fraction (XDRX) of DRX grains. In view of the true stress–strain curves gained from the experiment, the dDRX and XDRX models of DRX grains were constructed. Based on the developed models for DRX of TB8 titanium alloy, the isothermal forging process of the cylindrical samples was simulated by the DEFORM-3D software. The distributions of the effective strain and XDRX for DRX were analyzed. A comparison of the dDRX and XDRX of DRX grains in the central regions of the samples between the experimental and FEM results was performed. A good correlation between the experimental and simulation results was obtained, indicating that the established FEM model presented good prediction capabilities.

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Section: Resultsmentioning

confidence: 99%

Simulation and Experimental Study of Dynamical Recrystallization Kinetics of TB8 Titanium Alloys

et al. 2020

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“…Moreover, for α phase, its average volume fraction (favg(α)) and standard deviation (fsd(α)) values are obtained by [6]:…”

Section: Evaluation Indexesmentioning

confidence: 99%

“…Titanium drums are crucial aeroengine components, which have a significant influence on the reliability of aircrafts [1]. According to previous works, the forging of titanium aeronautic components is a difficult operation [2][3][4], and friction conditions greatly affect the temperature and phases of forged parts [5,6], further impacting the corrosion resistance and fatigue life of final parts [7,8]. Hence, an investigation of friction effects on temperature and phases within titanium forged drums is of vital importance and urgent necessity to optimize their ultimate mechanical properties and service life.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Friction Conditions on Temperature and Phases Within Forged Ti-6Al-4V Aeroengine Drum

Luo

Jiang

Zhang

et al. 2021

Preprint

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Friction conditions significantly impact the temperature and phases of titanium forged parts, further directly affecting the microstructures and mechanical properties of final parts. In this paper, a 2D simplified FE model combined with phase transition equations is developed to simulate Ti-6Al-4V drum forging procedure. Then, friction effects on the temperature and phases of the forged drum are numerically analyzed and verified by experiments. Results indicate that unlike little influence on α+β phase, improving friction obviously decreases the general levels of temperature and β phase and increases the homogeneities of α and β phases within the forged drum, which are associated with cooling rates and the heating effects of friction and deformation.

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“…So that in the sample and experiment that have used a special type of coolant, grain size up to about 25~50µm have been achieved. Luo et al [15] investigated on the effect of friction conditions on structural properties in the hot forging process of Ti6Al4V turbine blade. The results showed that friction had a significant effect on the microstructures of Ti workpieces and further affects their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Investigation Experimental and Finite Element Method of Mechanical Properties of Hot Forging on Ti6Al4V Alloy

Tagimalek

Maraki

Mahmoodi

et al. 2021

IJEE

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Forging is one of the oldest and the most important processes of metal forming. The process occurs due to the waxy deformation of metal. In the forging process, the die walls control the material flow and the mechanical properties of the workpiece are significantly improved. Today's world industries, financing costs play a leading role in production. These categories have entered the industry to create a variety of simulation and numerical modeling methods to eliminate this problem. Simulation and experimental test, mechanical properties in the hot forging process in high-cost materials are of great interest to researchers. In this paper, the mechanical properties of hot forging in Ti6Al4V alloy are investigated. According to the obtained results, it can be found that a very close agreement has been made on experiments reported in literature and the simulation. Depending on the results, the strain rate Z-axis showed the shear bands appeared exactly on the 45-degree plates and in the sample center. In fact, the intersection of the band's sample center is the max strain applied to the die. This area has been created with an effective strain and stress at all depths of the workpiece and gradually expands.

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Effect of friction conditions on phase transformation characteristics in hot forging process of Ti-6Al-4 V turbine blade

Cited by 20 publications

References 36 publications

Simulation and Experimental Study of Dynamical Recrystallization Kinetics of TB8 Titanium Alloys

Simulation and Experimental Study of Dynamical Recrystallization Kinetics of TB8 Titanium Alloys

Numerical Analysis of Friction Conditions on Temperature and Phases Within Forged Ti-6Al-4V Aeroengine Drum

Investigation Experimental and Finite Element Method of Mechanical Properties of Hot Forging on Ti6Al4V Alloy

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