Modelling the yield point phenomena during deformation at elevated temperatures: case study on Inconel 600

Momeni, Amir; Ebrahimi, Ghanbar; Ezatpour, H.R.

doi:10.1080/14786435.2018.1493236

Cited by 7 publications

(1 citation statement)

References 34 publications

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“…Beyond that, higher temperatures during the DRV stage can lower dislocation movement resistance and encourage the creation of a dislocation unit cell structure. [ 32 ] As the alloy was more readily deformed at higher temperatures in the DRX stage, the grains were more easily bent, revealing that the change in grain boundary angle and the DRX process were simpler to realize. [ 33 ] When the temperature was raised to 1250 °C, the subgrains with sharp borders appear and new DRX grains were created, and a considerable number of dislocations were absorbed by the transition of the grain boundary angle, triggering a small dislocation density.…”

Section: Resultsmentioning

confidence: 99%

Hot Deformation Behavior of a Novel Cr–Mo–V Hot Work Die Steel

Zhao

Tan

Jia

et al. 2023

steel research int.

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Herein, high‐temperature hot compression tests are carried out to investigate the hot deformation behavior of a novel Cr–Mo–V hot work die steel. Meanwhile, a strain compensation Arrhenius constitutive equation is created, and the fitting correlation coefficient R between the experimental and predicted values is 0.98921, with a mean average absolute relative error (AARE) of 3.82%. According to the results, the hot deformation constitutive equation of the novel Cr–Mo–V steel can predict the flow stress of hot deformation with high accuracy. Furthermore, the equations for critical stress (strain), peak stress (strain), and Zener–Holomon parameters are constructed, and they demonstrate a satisfactory linear fit. Additionally, a hot processing map of the novel Cr–Mo–V steel is developed at strains of 0.4, 0.5, 0.6, and 0.7. By analyzing the hot processing map and viewing the microstructure, this study concludes that the optimal hot processing parameters of the novel Cr–Mo–V steel are 1050–1150 °C and 0.8–1 s−1 at a strain of 0.7, with a peak power dissipation efficiency of nearly 0.68.

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Section: Resultsmentioning

confidence: 99%