Precipitation Behaviors of β-Phase and Changes in Mechanical Properties of AL-MG System Alloys

Nakayama, Yukihiro; Takaai, Tetsuya; Jin, Dazhou

doi:10.4028/www.scientific.net/msf.217-222.1269

Cited by 6 publications

(2 citation statements)

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“…All precipitates can act as the hard particles in Al-5083, effectively increasing the HDI hardening [31]. Based on Orowan bypass mechanism [32], the HDI stress caused by precipitation is 80 -100 MPa [33,34], which is an important constituent of the HDI stress. Therefore, the HDI hardening of HLS Al-5083 consists of two parts, soft / hard domain hardening and precipitation hardening.…”

Section: Hdi Strengthening Mechanismmentioning

confidence: 99%

Influence of annealing parameters on the mechanical properties of heterogeneous lamella structured 5083 aluminum alloy

Fang

Ruiz

et al. 2019

Lett. Mater.

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It has long been a research goal to obtain both high strength and ductility in structural materials. As the most important structural materials, metals and alloys are either strong or ductile, but seldom maintain both characteristics at the same time. After decades of attempts, extraordinary high strength has been achieved by involving nano-or ultrafine-grained structure. However, the ductility of these materials is relatively low. In the recent years, heterostructured materials have been demonstrated to possess superior combinations of strength and ductility, which are attributed to the hetero-deformation induced (HDI) strengthening and work hardening. The HDI hardening in previous studies is mainly caused by soft / hard domain boundaries. Here we report a heterogeneous lamella structure (HLS) in 5083 aluminum alloy fabricated by rolling and partial annealing. Superior combinations of strength and ductility have been achieved in the HLS Al-5083 through various annealing times and temperatures in this paper. Based on EBSD and TEM analysis, HDI hardening is an important reason for the excellent combination of strength and ductility. And soft / domain boundary hardening, and precipitation hardening are revealed as two important components of HDI hardening in Al-5083. These findings elucidate the HDI hardening mechanism in Al-5083 alloy, which will help us design the heterostructure of Al-5083 for engineering applications.

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Section: Hdi Strengthening Mechanismmentioning

confidence: 99%

Influence of annealing parameters on the mechanical properties of heterogeneous lamella structured 5083 aluminum alloy

Fang

Ruiz

et al. 2019

Lett. Mater.

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“…With a high Mg content, the Al-Mg alloy has high strength. But Al-Mg alloy containing Mg levels greater than 3.5wt.% is susceptible to stress corrosion cracking, which should be attributed to the formation of the β-Al 8 Mg 5 at grain boundaries [1]. Minor additions of Zn in levels between 0.68-0.70wt.% can significantly improve corrosion resistance properties of Al-5083 (5.4wt.%Mg) [2].…”

Section: Introductionmentioning

confidence: 99%

Strain Rate Sensitivity and Adiabatic Shear Deformation of an Advanced Al-Mg Alloy

Lang

Zhou

et al. 2014

AMR

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In order to develop new Al alloy, the quasi-static and dynamic compression deformation behavior of an advanced Al-Mg alloy, which contained Zn and rare earth, were investigated. Deformed microstructures in the shear bands of this alloy were characterized by optical microscope. Results show that the compressive strengths increase with strain and strain rates being increased, and microstructures of deformed Al-Mg alloy along compression directions are sensitive to strain rates. The distorted deformation twins near the deformed band can be formed under low strain rate of 5.6×10-3 s-1, while multiple shear bands slipping can be induced by dynamic deformation under high strain rates from 1.9×103 s-1 to 5×103 s-1. Therefore, compressive strength and fracture strain of dynamic deformation are higher than that of the quasi-static deformation, which is attributed to the strain hardening and grain refining in the multiple shear bands.

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Effect of Incubation Coupled with Artificial Aging in T6 Heat Treatment of A356.2 Aluminum Casting Alloy

2011

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Precipitation Behaviors of β-Phase and Changes in Mechanical Properties of AL-MG System Alloys

Cited by 6 publications

References 0 publications

Influence of annealing parameters on the mechanical properties of heterogeneous lamella structured 5083 aluminum alloy

Influence of annealing parameters on the mechanical properties of heterogeneous lamella structured 5083 aluminum alloy

Strain Rate Sensitivity and Adiabatic Shear Deformation of an Advanced Al-Mg Alloy

Effect of Incubation Coupled with Artificial Aging in T6 Heat Treatment of A356.2 Aluminum Casting Alloy

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