Interaction between texture evolution and dynamic recrystallization of extruded AZ80 magnesium alloy during hot deformation

Qin, Dongyang; Wang, M.J.; Sun, Chaoyang; Su, Zexing; Qian, Lingyun; Sun, Zhihui

doi:10.1016/j.msea.2020.139537

Cited by 47 publications

(5 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, the orientation of the three samples in the direction of 〈10-10〉and 〈11-20〉is also very random. Weaker texture accounts for the decrease in strength and the increase in ductility, which is consistent with literature [43].It is worth noting that, with the increase of extrusion speed, the local texture strength appears higher, which may be due to the increase of extrusion speed and strain rate, and the random orientation caused by recrystallization cannot make up for the preferred orientation caused by deformation.…”

Section: Texture Evolutionsupporting

confidence: 89%

Effect of extrusion speed on microstructure and mechanical properties of Mg-Al-Ca-Sn alloy

Zhang¹,

Liu²,

Li³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

Low-temperature and high-speed extrusion of wrought magnesium alloy is an urgent problem. Mg-2.5Al-2Ca-1Sn alloys were extruded at 260 ℃ with different ram speeds (2.0,4.0 and 6.0 mm/s). The effects of extrusion speed on the microstructure and mechanical properties of the alloys were systematically investigated. It's worth noting that all the three extruded alloys were fully dynamic recrystallized (DRXed).With the increase of extrusion speed from 2 mm/s to 6 mm/s, the DRXed grain size are increased from 1.25 μm to 1.94 μm, average second phase particles are augmented from 0.79 μm to 0.89 μm and the volume fraction of second phase increases from 6.4% to 18.6%.The extruded alloys with three different extrusion speeds all show excellent comprehensive mechanical properties because of fine grain size, fully recrystallization and homogeneously dispersed second phase particles. The tensile yield strength (TYS) and ultimate tensile strength (UTS) decreased from 285 MPa,304 MPa to 217 MPa,264 MPa while the elongation increased from 11.4 % to 20 % when the ram speed rised from 2.0 mm/s to 6.0 mm/s.

show abstract

Section: Texture Evolutionsupporting

confidence: 89%

Effect of extrusion speed on microstructure and mechanical properties of Mg-Al-Ca-Sn alloy

Zhang¹,

Liu²,

Li³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…Consequently, texture development has a strong effect on different properties of the materials and this may be useful for achieving additional information in areas such as the deformation mechanisms [74,75], the role of strain hardening [76][77][78][79][80][81], phase transformations including precipitation kinetics [82] and recrystallization processes [83][84][85][86], the significance of mechanical anisotropy [87][88][89] and other physical properties such as the magnetic, photovoltaic and corrosion properties [90][91][92][93][94][95]. It is important to note that there is no evidence for any direct correlation between texture and the electrical conductivity evolution.…”

Section: Introductionmentioning

confidence: 99%

Texture evolution in high-pressure torsion processing

Azzeddine

Bradai

Baudin

et al. 2022

Progress in Materials Science

View full text Add to dashboard Cite

“…According to Figure 11, the substructures were the main components at the strain rate of 0.01 s −1 (Figure 11a,c), while the deformed microstructures accounted for the largest proportion at the strain rate of 1 s −1 (Figure 11b,d). As the strain rate increases, it is conducive to recrystallization and nucleation due to the large dislocation gradient and high storage energy near the bowed grain boundaries, and [ 15,32,33 ] the subgrains can coalesce by absorbing dislocations until the grain boundary becomes HAGBs. As a result, the low‐angle grain boundarys are converted to HAGBs and finally the grains are refined.…”

Section: Resultsmentioning

confidence: 99%

Comparison Study of Hot Deformation Behavior and Microstructure Evolution of Rack Steels with and without Segregation

Wang

Kan

et al. 2022

steel research int.

View full text Add to dashboard Cite

In order to compare the hot deformation behavior and microstructure evolution of the rack steels with and without segregation, hot compression tests are carried out in the temperature range of 1173–1423 K and the strain rate range of 0.01–10 s−1 on a DIL805A/D quenching and deformation dilatometer. The flow stress, constitutive relation, processing map, and microstructure characterization are investigated. The results show that the flow stress increases with the increase of strain rate and the decrease of deformation temperature. The calculated activation energy (Q) and stress exponent (n) for the segregated samples are 395.245 kJ mol−1 and 6.046, which are higher than segregated samples, showing 376.815 kJ mol−1 and 5.930. The processing maps show that the workability of the nonsegregated steel is significantly more excellent than segregated steel. The segregated steel shows a higher kernel average misorientation angle and local strain. Complete dynamic recrystallization occurs at a high strain rate, and high deformation temperature can refine the grains.

show abstract

Interaction between texture evolution and dynamic recrystallization of extruded AZ80 magnesium alloy during hot deformation

Cited by 47 publications

References 39 publications

Effect of extrusion speed on microstructure and mechanical properties of Mg-Al-Ca-Sn alloy

Effect of extrusion speed on microstructure and mechanical properties of Mg-Al-Ca-Sn alloy

Texture evolution in high-pressure torsion processing

Comparison Study of Hot Deformation Behavior and Microstructure Evolution of Rack Steels with and without Segregation

Contact Info

Product

Resources

About