Simulation on extrusion process of TiAl alloy

Si, Jiayong; Gao, Fan; HAN, Pengbiao; Zhang, Ji

doi:10.1016/j.intermet.2010.08.021

Cited by 12 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ACCEPTED MANUSCRIPT 14 shown in figure 8. In these maps, the counter line number represented the power dissipation efficiency (η) and the shadow domain indicated instability region( ).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…There was few investigations on the hot workability and deformation ability of secondary or multi-step deformation for TiAl alloy. In general, hot extrusion was an effective way to refine and homogenize the microstructure, eliminate casting/powder metallurgy defects and fabricate high-performance performs of TiAl alloy [13][14][15]. Thus it was very meaningful to investigate the hot deformation workability of as-extruded TiAl alloy.…”

mentioning

confidence: 99%

See 1 more Smart Citation

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

Jiang

Zhang

2015

Materials & Design

View full text Add to dashboard Cite

“…ACCEPTED MANUSCRIPT 14 shown in figure 8. In these maps, the counter line number represented the power dissipation efficiency (η) and the shadow domain indicated instability region( ).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

mentioning

confidence: 99%

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

Jiang

Zhang

2015

Materials & Design

View full text Add to dashboard Cite

“…To further comprehend the effect of REEs on the hot workability and the regularity of experimental materials dur-ing thermoplastic deformation, it is necessary to study the processing map proposed by Prasad and Gegel. 33,34) To date, the processing map based on the dynamic material model (DMM) has been widely adopted to optimize hot working processes of metallic materials, such as superalloy, 35) Titanium alloys, 36) Aluminum alloys, 37) and Magnesium alloys. 38) In the DMM model, the total power P consists of two complementary parts, which can be defined as follows:…”

Section: Hot Workability Of Steelmentioning

confidence: 99%

Effect of Rare Earth Elements on Microstructure and Hot Workability of AISI T15 High Speed Steel

et al. 2022

View full text Add to dashboard Cite

To investigate the effect of rare earth elements (REEs) on hot workability and the microstructure evolution of AISI T15 high-speed steel (HSS), hot compression tests were conducted using a Gleeble-1500D thermal simulation machine at the temperature of 1 000-1 150°C and the strain rate of 0.01-10 s − 1 . The experimental results show that the flow stress of the modified samples by REEs is lower than that of REEs-free samples under the same conditions, indicating that REEs cause a reduction in deformation resistance (stress level) and improve the deformability of the as-cast high alloy steels at elevated temperatures. A hyperbolic-sine function was adopted to characterize the flow stress as a function of deformation temperature and strain rate and the apparent activation energy of T15 HSS before and after adding REEs were determined to be approximately 557.3 kJ/mol and 513.97 kJ/mol, respectively. Therefore, it is inferred that REEs are beneficial to the occurrence of dynamic recrystallization (DRX), which has also been demonstrated through the determination of characteristic points on the stress-strain curves and the evolution of microstructure. The metallographic analysis also indicates that REEs refine the recrystallized grains and eutectic carbide network and make the deformed microstructure more uniform. Additionally, the maps of power dissipation and instability based on the Dynamic Materials Modeling approach (DMM) were established to evaluate the effect of REEs on hot workability.

show abstract

“…Damage generally relates to the likelihood of fracture in a slab, which occurs when the damage factor C reaches a critical value C* [22]. After the hot rolling process, edge cracking is often found on the lateral parts of the slab.…”

Section: Damage Factormentioning

confidence: 99%

“…where σ*, σ, 𝜀̅ and 𝜀 𝑓 denote the maximum component of tensile stress, the effective stress, the effective strain and the fracture strain, respectively. The normalized Cockcroft-Latham criterion during metalworking has been associated with fracture strain (𝜀 𝑓 ) measured from uniaxial tension tests [22,24], which correspond to the C* value. In this work, a C* value of 0.37 was selected according to the hot tensile test results for a similar steel presented by Wang et al [25].…”

Section: Damage Factormentioning

confidence: 99%

3D-FEM Simulation of Hot Rolling Process and Characterization of the Resultant Microstructure of a Light-Weight Mn Steel

et al. 2021

View full text Add to dashboard Cite

Computational simulation has become more important in the design of thermomechanical processing since it allows the optimization of associated parameters such as temperature, stresses, strains and phase transformations. This work presents the results of the three-dimensional Finite Element Method (FEM) simulation of the hot rolling process of a medium Mn steel using DEFORM-3D software. Temperature and effective strain distribution in the surface and center of the sheet were analyzed for different rolling passes; also the change in damage factor was evaluated. According to the hot rolling simulation results, experimental hot rolling parameters were established in order to obtain the desired microstructure avoiding the presence of ferrite precipitation during the process. The microstructural characterization of the hot rolled steel was carried out using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that the phases present in the steel after hot rolling are austenite and α′-martensite. Additionally, to understand the mechanical behavior, tensile tests were performed and concluded that this new steel can be catalogued in the third automotive generation.

show abstract

Simulation on extrusion process of TiAl alloy

Cited by 12 publications

References 8 publications

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

The hot deformation behavior and processing map of Ti–47.5Al–Cr–V alloy

Effect of Rare Earth Elements on Microstructure and Hot Workability of AISI T15 High Speed Steel

3D-FEM Simulation of Hot Rolling Process and Characterization of the Resultant Microstructure of a Light-Weight Mn Steel

Contact Info

Product

Resources

About