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microstructural evolution of gcr15 steel during

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Microstructural evolution during ageing of AlCuLi

Abstract In this study, atom probe tomography was used to investigate the microstructure of the alloy AA2198 (Al1.35 Cu3.55 Li0.29 Mg0.08 Ag) over a range of ageing conditions to examine the evolution of phases in the alloy, in particular aiming to reveal the nucleation mechanism of the strengthening T1 phase. T1 precursor phases were observed from early ageing, most of which were Accelerating Cementite Precipitation during the Non In this work, the non-isothermal process of GCr15 bearing steel after quenching and tempering (QT) under different tensile stress (0, 20, 40 MPa) was investigated by kinetic analysis and microstructural observation. The Kissinger method and differential isoconversional method were employed to assess

Austenite grain growth behavior of a GCr15 bearing steel

Isothermal homogenization heat treatments for a GCr15 bearing steel cast billet were performed at temperatures of 10001250 °C and holding times of 30180 min. The grain size of austenite was measured with a metallographic microscope through the linear intercept method. Mechanism of the Microstructural Evolution of In this study, vacuum low-pressure carburizing heat treatments were carried out on 18Cr2Ni4WA case-carburized alloy steel. The evolution and phase transformation mechanism of the microstructure of the carburized layer during low-temperature tempering and its effect on the surface hardness were studied. The results showed that the carburized layer of the 18Cr2Ni4WA steel was composed of a large Microstructure Evolution and Mechanical Properties to produce GCr15 steel ingots and the microstructure, non-metallic inclusions, chemical composition and mechanical properties of the ingots were analyzed to investigate the effect of TSMF during the ESR pro-cess. The transverse section of the ingots indicated that the application of a 130 mT static magnetic field

Microstructure Evolution in Nb-Ti Micro-Alloyed Steel

With the aid of the model, the paper analyzes detailedly the distribution and evolution of microscopic field-variables in rolled piece during the whole rolling process of GCr15 steel rod. Multi-field coupled numerical simulation of hot reversible In this paper, based on rolling technology of hot reversible rolling mill, a multi-filed coupled finite element (FE) model of hot reversible rolling process of large dimension cross-section GCr15 steel rod is established. Thermal, mechanical and microstructural phenomena during the rolling process are coupled in the model. By employing grain growth experiment, double and single hit hot On the Microstructural Evolution of 4130 Steel During Hot Title:On the Microstructural Evolution of 4130 Steel During Hot Compression VOLUME:5 ISSUE:1 Author(s):Mohamadreza Nourani, Vahid Sajadifar, Mostafa Ketabchi, Abbas S. Milani and Spiro Yannacopoulos Affiliation:School of Engineering, University of British Columbia, Kelowna, BC V1V1V7, Canada. Keywords:Austenite grain size, dynamic recrystallization, flow stress, hot compression

Preliminary Research on Response of GCr15 Bearing Steel

The characteristics of microstructural change of bearing steel (GCr15) were studied. It was found that the hardness of the material increased after the cyclic compressive load, and the inclusions interacted with the matrix material. In the local microregion a white etching area Study of Static Recrystallization Behaviors of GCr15 Steel Dec 19, 2014 · In order to study the static recrystallization behavior of GCr15 steel during hot deformation process, two-pass hot compression experiments were conducted on Gleeble-3500 thermo-simulation system at the test temperatures from 850 to 1150 °C strain rate from 0.01 to 1 s 1, strain from 0.05 to 0.15 and inter-stage delay time from 1 to 100 s, respectively. The effects of temperature, strain Study of Static Recrystallization Behaviors of GCr15 Steel Dec 19, 2014 · In order to study the static recrystallization behavior of GCr15 steel during hot deformation process, two-pass hot compression experiments were conducted on Gleeble-3500 thermo-simulation system at the test temperatures from 850 to 1150 °C strain rate from 0.01 to 1 s1, strain from 0.05 to 0.15 and inter-stage delay time from 1 to 100 s, respectively.

Subsurface Dynamic Deformation and Nano-structural

Aug 20, 2019 · Dry sliding tribological properties of normalized 40Cr steel pins against quenched and tempered GCr15 discs were investigated under various sliding distances through disc-on-pin contact configuration. Microstructural feature evolution and strain-hardening behavior of worn subsurface in 40Cr pins were systematically analyzed using scanning electron microscopy and transmission Three-Dimensional Cellular Automata Simulation of the The austenitizing process of GCr15 steel was simulated, and the anisotropy of grain growth rate during austenitization was demonstrated by simulation results. By comparing the simulation results with the experimental data, it was found that the calculated results of the three-dimensional cellular automaton model established in this paper were Microstructure Evolution and Mechanical Properties to produce GCr15 steel ingots and the microstructure, non-metallic inclusions, chemical composition and mechanical properties of the ingots were analyzed to investigate the effect of TSMF during the ESR pro-cess. The transverse section of the ingots indicated that the application of a 130 mT static magnetic field

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