Extrusion limit diagram of IN 690 super-alloy tube based on hot processing map

Sun, Chaoyang; Xiang, Yu; Li, Geng; Zuo, Xun; Wang, Mengqi; Zhang, Qingdong

doi:10.1007/s00170-016-9271-3

Cited by 13 publications

(2 citation statements)

References 25 publications

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“…However, the results obtained by previous studies reveal that the poor formability and narrow processing temperature range of high strength rare earth magnesium alloys severely restrict their application and promotion [15]. However, with the aid of material physical models and processing maps, the formability of high strength rare earth magnesium alloys can be predicted and the optimal technological parameters can be obtained to replace the traditional trial and error method, which provides a reliable guarantee for the accurate control of product quality [16,17]. To date, many experiments have been carried out using this method to predict the forming ability of commercial magnesium alloys and the main prediction method is to establish two-dimensional processing maps based on the strain rate and temperature.…”

Section: Introductionmentioning

confidence: 99%

3D Processing Maps of Cast Mg‐9Gd‐3Y Alloy and Numerical‐Experimental Verification

Luo

2021

Advances in Materials Science and Engineering

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The hot compression behavior of Mg-9Gd-3Y (GW93) alloy was investigated by carrying out isothermal compression tests at the deformation temperature range of 300–450°C and strain rate range of 0.001–1s−1. Considering the influence of the strain on the formability of the GW93 alloy, three-dimensional (3D) processing maps were established based on the dynamic material model. The 3D processing maps indicate that the formability of the material improved with the decrease of the strain rate and the increase of the heating temperature, and the material at lower heating temperature mostly underwent flow instability. The formable processing region of the hot deformation of the GW93 alloy was concentrated within the temperature range of 380–450°C and the strain rate range of 0.001–0.01 s−1. Subsequently, the 3D processing maps were embedded into the finite element (FE) software DEFORM-3D by means of user subroutines, and the formability of GW93 alloy during the isothermal plane strain forging process was predicted. The FE simulation results revealed that the formability of the material at low strain rate improved compared with that at high strain rate under the same temperature. Finally, an isothermal plane strain forging technological experiment was carried out, and the microstructure of the formed sample was analyzed. The experimental result is in good agreement with that of the numerical simulation. Combined with microstructural observation, the accuracy of the simulation results and the 3D processing maps of the GW93 alloy was verified.

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Section: Introductionmentioning

confidence: 99%

3D Processing Maps of Cast Mg‐9Gd‐3Y Alloy and Numerical‐Experimental Verification

Luo

2021

Advances in Materials Science and Engineering

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“…In addition to aluminum alloys, ELD was also constructed to determine suitable extrusion parameters for other alloys. For example, Sun et al (2017) constructed an ELD for the superalloy Inconel 600 with a high nickel content, based on hot processing map.…”

Section: Introductionmentioning

confidence: 99%

Construction of three-dimensional extrusion limit diagram for magnesium alloy using artificial neural network and its validation

Bai

Fang

Zhou

2020

Journal of Materials Processing Technology

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Conventional extrusion limit diagram (ELD) involves only two extrusion processvariables and as such it does not account for the combined effects of multiple process parameters on the extrusion process with respect to pressure requirement and extrudate temperature. Attempts were made in the present research to construct three-dimensional (3D) ELD for a magnesium alloy in the space of initial billet temperature, extrusion ratio and extrusion speed. A method to build 3D ELD by integrating finite element (FE) simulations, extrusion experiments and artificial neural networks (ANN) was developed. In addition to initial billet temperature, extrusion ratio and extrusion speed, the temperature difference between the extrusion tooling and billet, the size of the billet and the shape complexity of the extrudate were taken g m s T g

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Determination of Hot Workability of 5Cr5MoSiV1 Steel Based on Hot Processing Map

Shang,

Wang,

Hao

et al. 2024

steel research int.

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The evaluation of the hot workability of 5Cr5MoSiV1 steel with high deformation resistance is crucial for the controllability of the hot forging process. Based on the isothermal compression at deformation temperature of 950–1200 °C and strain rate of 0.01–10 s−1, the flow behavior of 5Cr5MoSiV1 steel is demonstrated. As the strain rate increases, the typical characteristics of the true stress–strain curve indicate that the dynamic softening mechanism changes from dynamic recrystallization to dynamic recovery. Moreover, the hot working window determined by the hot processing map from the modified J–C constitutive model is constructed for the forging process of the material. Through microstructure verification, the optimal hot working window is within the range of deformation temperature from 1000 to 1185 °C and strain rate from 0.01 to 0.202 s−1. Furthermore, the forging upsetting tests of the large cylindrical specimens are used to confirm the insecurity of hot deformation parameters outside the optimum hot working window. The implementation of this study can provide a theoretical basis for the determination of hot forging process parameters for 5Cr5MoSiV1 steel.

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Extrusion limit diagram of IN 690 super-alloy tube based on hot processing map

Cited by 13 publications

References 25 publications

3D Processing Maps of Cast Mg‐9Gd‐3Y Alloy and Numerical‐Experimental Verification

3D Processing Maps of Cast Mg‐9Gd‐3Y Alloy and Numerical‐Experimental Verification

Construction of three-dimensional extrusion limit diagram for magnesium alloy using artificial neural network and its validation

Determination of Hot Workability of 5Cr5MoSiV1 Steel Based on Hot Processing Map

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