Morphology and mechanical properties of the T-Al6Mg11Zn11 phase in the eutectic microstructure of Al–Zn–Mg ternary alloys

Takata, Naoki; Okano, Taiki; Aikawa, Motonari; Suzuki, Asuka; Kobashi, Makoto; Hagihara, Koji

doi:10.1016/j.intermet.2020.106881

Cited by 20 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When deformed in the safe zone, the eutectic T phase underwent plastic deformation to coordinate the deformation of the matrix, as also observed for the 7075 and Al-7.93Zn-2.68Mg-2.0Cu alloys [35,36]. Such an excellent deformation compatibility of the eutectic T phase and α-Al matrix can be attributed to the unique high-temperature nature of the T phase and favorable interfacial adaptation of α-Al and the T phase [46]. In this case, the stress concentration at the α-Al/T phase interfaces was insufficient for crack initiation.…”

Section: Processing Mapsmentioning

confidence: 58%

Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy

et al. 2023

View full text Add to dashboard Cite

One of the key issues limiting the application of Al-Mg-Zn-Cu alloys in the automotive industry is forming at a low cost. Isothermal uniaxial compression was accomplished in the range of 300–450 °C, 0.001–10 s−1 to study the hot deformation behavior of an as-cast Al-5.07Mg-3.01Zn-1.11Cu-0.01Ti alloy. Its rheological behavior presented characteristics of work-hardening followed by dynamic softening and its flow stress was accurately described by the proposed strain-compensated Arrhenius-type constitutive model. Three-dimensional processing maps were established. The instability was mainly concentrated in regions with high strain rates or low temperatures, with cracking being the main instability. A workable domain was determined as 385–450 °C, 0.001–0.26 s−1, in which dynamic recovery (DRV) and dynamic recrystallization (DRX) occurred. As the temperature rose, the dominant dynamic softening mechanism shifted from DRV to DRX. The DRX mechanisms transformed from continuous dynamic recrystallization (CDRX), discontinuous dynamic recrystallization (DDRX), and particle-stimulated nucleation (PSN) at 350 °C, 0.1 s−1 to CDRX and DDRX at 450 °C, 0.01 s−1, and eventually to DDRX at 450 °C, 0.001 s−1. The eutectic T-Mg32(AlZnCu)49 phase facilitated DRX nucleation and did not trigger instability in the workable domain. This work demonstrates that the workability of as-cast Al-Mg-Zn-Cu alloys with low Zn/Mg ratios is sufficient for hot forming.

show abstract

Section: Processing Mapsmentioning

confidence: 58%

Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy

et al. 2023

View full text Add to dashboard Cite

show abstract

“…T-phase particles are reported to form in high Zn and Mg containing Al-alloys in the Al-Zn-Mg system and possess a cubic structure with lattice parameter value of 14.16 Å [26,27]. Typically, the formation of T-phase particles are utilised for the hardening characteristics in designing novel high strength Al-Zn-Mg alloys [26,[28][29][30].…”

Section: In-situ Xrd Characterisation and Calphad Modelling Of Tphase...mentioning

confidence: 99%

Influence of second phase particles on the mechanical properties of a high solute Al-Zn-Mg alloy fabricated through laser powder bed fusion

Babu

Lam

et al. 2022

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…The Al-Mg-Zn alloy is characterized by high strength strengthened with T-Mg 32 (Al, Zn) 49 phase, which makes it a promising material for various industries, such as aerospace, automobile, and shipbuilding [1][2]. However, the strength of Al-Mg-Zn alloy is still insufficient compared with 7xxx series aluminum alloy [3], and the welding performance also needs to be improved. As we all know, Sc is widely recognized as a highly effective microalloying element in aluminum alloys.…”

Section: Introductionmentioning

confidence: 99%

Precipitation Behavior of Al₃(Sc, Zr) Particles in Al-Mg-Zn Alloy during Two-stage Homogenization

Zhang,

Yan,

Zhang

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The precipitation of secondary Al3(Sc, Zr) particles in Al-Mg-Zn-Sc-Zr alloy during the two-stage homogenization has been studied by OM, SEM, and TEM. The results indicated that Al3(Sc, Zr) particles grew gradually with the first-stage homogenization temperature ranging from 380°C to 440°C. The first-stage homogenization temperature greatly affected the particle size of Al3(Sc, Zr). The lower the first-stage homogenization temperature was, the smaller the particle size of Al3(Sc, Zr) was. After the same second-stage homogenization treatment, the particles were coarsened, and the size was 15.2 nm, 15.9 nm, and 19.7 nm, respectively. Meanwhile, the Al3(Sc, Zr) particles exhibited a legume-like morphology and maintained a coherent relationship with the Al matrix after different homogenization treatments.

show abstract

Morphology and mechanical properties of the T-Al6Mg11Zn11 phase in the eutectic microstructure of Al–Zn–Mg ternary alloys

Cited by 20 publications

References 21 publications

Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy

Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy

Influence of second phase particles on the mechanical properties of a high solute Al-Zn-Mg alloy fabricated through laser powder bed fusion

Precipitation Behavior of Al₃(Sc, Zr) Particles in Al-Mg-Zn Alloy during Two-stage Homogenization

Contact Info

Product

Resources

About

Morphology and mechanical properties of the T-Al6Mg11Zn11 phase in the eutectic microstructure of Al–Zn–Mg ternary alloys

Cited by 20 publications

References 21 publications

Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy

Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy

Influence of second phase particles on the mechanical properties of a high solute Al-Zn-Mg alloy fabricated through laser powder bed fusion

Precipitation Behavior of Al3(Sc, Zr) Particles in Al-Mg-Zn Alloy during Two-stage Homogenization

Contact Info

Product

Resources

About

Precipitation Behavior of Al₃(Sc, Zr) Particles in Al-Mg-Zn Alloy during Two-stage Homogenization