Tensile Properties of a Heat-Resistant Aluminium Alloy Strengthened by T-Al6Mg11Zn11 Intermetallic Phase

Nakatsuka, Satoshi; Ishihara, M.; Takata, Naoki; Suzuki, Asuka; Kobashi, Makoto

doi:10.1557/adv.2019.107

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…Recently, investigation of Al-Mg-Zn alloys reinforced by T-Mg 32 (Al,Zn) 49 phase has attracted the attention of researchers at home and abroad [3][4][5]. The research by Zhang [6,7] showed that Al-Mg-Zn alloy obtained a higher strength and toughness than the commercial 7000 series aluminum alloy owing to the strength of T phase.…”

Section: Introductionmentioning

confidence: 99%

First-Principles Investigations on Structural Stability, Elastic Properties and Electronic Structure of Mg32(Al,Zn)49 Phase and MgZn2 Phase

et al. 2022

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Al–Mg–Zn alloys reinforced by T–Mg32(Al,Zn)49 phase had higher structure stability and strength than Al–Zn–Mg–(Cu) alloys reinforced by MgZn2 phase, but the reasons for these two kind of alloys was not well-known. To reveal the discrepancy between T phase and MgZn2 phase, the lattice parameters, cohesive energy, and electronic structure as well as the elastic properties were investigated based on density functional theory. Four types of T phase unit cell were employed according to symmetry of space group. The calculated lattice constants well-agreed with experimental data. Compared to MgZn2 phase, T phases obtained lower cohesive energy owing to their partial covalent bond, which may result in a higher structure stability. The elastic modulus E of T phase depended on the occupation of Al atom, and the effect of the occupation of Al atom on the structure and properties of T phase was also discussed.

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Section: Introductionmentioning

confidence: 99%

First-Principles Investigations on Structural Stability, Elastic Properties and Electronic Structure of Mg32(Al,Zn)49 Phase and MgZn2 Phase

et al. 2022

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“…A variety of reinforcing phases are used in Al composites used at room temperature: ceramic particles [1,2], carbon nanotubes [3]. Intermetallic precipitates in the matrix are more favorable for high-strength Al-based alloys at elevated temperatures [4][5][6]. Group 3 (Sc [7], Y [8], Er [5]) and Group 4 (Ti [9,10], Zr [11,12]) transition metals are promising alloying elements for heat resistant Al alloys.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Nanocrystalline Al with Al3Zr Core-Shell Structure

Janovszky

2020

Metals

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High-density Al-based composites reinforced with ten-wt% recycled nanocrystalline CuZrAgAl particles have been fabricated by mechanical milling, cold- and hot-pressing. The microstructures, phase transformations, and mechanical properties of the mixed powder and sintered samples were investigated. After milling in a ball mill for 30 h, the microhardness of the mixed powder increases to 301 ± 31 HV0.01 and 222 ± 10 HV0.01 without and with ethanol milling, respectively. On account of the interdiffusion, the melting temperature of mixed powder reduces to 574 ± 5.0 °C and 627.5 ± 6.5 °C after 30 h milling. The study showed that the reinforcing particles are homogeneously distributed in the sintered nanocrystalline Al-based composites. During the hot-pressing, a shell zone forms at the interface of reinforcing particles during hot pressing after high energy milling with a minimum of ten hours milling time. This shell zone consists of Al3Zr (D023) phase. The coarsening resistant core-shell structure and grain refinement greatly improve mechanical properties. The compression strength at room temperature varies between 650 and 800 MPa at room temperature and is 380 MPa at 400 °C for the composite containing ten-wt% of the Cu-Zr-based amorphous-nanocrystalline phases. The Brinell hardness of the sintered composite is 329 HB.

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Precipitation morphology and kinetics of T-Al6Mg11Zn11 intermetallic phase in Al–Mg–Zn ternary alloys

Takata

Takagi

et al. 2021

Intermetallics

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Tensile Properties of a Heat-Resistant Aluminium Alloy Strengthened by T-Al6Mg11Zn11 Intermetallic Phase

Cited by 9 publications

References 8 publications

First-Principles Investigations on Structural Stability, Elastic Properties and Electronic Structure of Mg32(Al,Zn)49 Phase and MgZn2 Phase

First-Principles Investigations on Structural Stability, Elastic Properties and Electronic Structure of Mg32(Al,Zn)49 Phase and MgZn2 Phase

Strengthening of Nanocrystalline Al with Al3Zr Core-Shell Structure

Precipitation morphology and kinetics of T-Al6Mg11Zn11 intermetallic phase in Al–Mg–Zn ternary alloys

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