Regulate and Control Grain Structure Characteristics and Mechanical Properties Control of Al-Zn-Mg-Cu Alloy

Guo Hui Shi; Hong Wei Yan; Ming Yang Yu; Kai Zhu; Guan Jun Gao

doi:10.4028/p-5a3ua9

Paper Titles

Effect of Fe-Rich Phases on Fracture Toughness of High Strength Al-Zn-Mg-Cu Alloy
p.51

Effect of Cu Content on the Microstructures of As-Cast and Homogenized Al-Cu-Mg-Ag Alloys
p.59

Effect of Zn/Mg Ratio on Microstructure Evolution of Al-Zn-Mg-Cu Alloys during Homogenization
p.65

Second Phase Dissolution Evolution of an As-Cast Al-4.0Cu-1.0Li-0.4Mg-0.3Ag-0.1Zr Alloy during Multiple Homogenization Processes
p.75

Regulate and Control Grain Structure Characteristics and Mechanical Properties Control of Al-Zn-Mg-Cu Alloy
p.85

Effect of Pre-Deformation Degree on the Mechanical Properties and Microstructural Evolution of a Novel Al-Cu-Li Alloy
p.93

Metal Injection Molding Using Gas-Assisted Technology for Optimizing Density Uniformity and Part Weight Reduction
p.101

Simulation Research on Cold Extrusion Strengthening and Reaming of 7050 Aluminum Alloy Plate Hole
p.109

Impurity Characterization by LA-ICP-MS in Terbium Metal after Solid State Electrotransport Purification
p.119

HomeKey Engineering MaterialsKey Engineering Materials Vol. 921Regulate and Control Grain Structure...

Regulate and Control Grain Structure Characteristics and Mechanical Properties Control of Al-Zn-Mg-Cu Alloy

Abstract:

Grain characteristics are one of the most important factors in determining alloy properties. Thermal deformation and solution treatment experiments were used to investigate the evolution of grain features and mechanical properties of Al-9.39 Zn-1.92 Mg-1.98 Cu alloy. The results reveal that when the deformation temperature rises, the recrystallized grain size, recrystallization fraction, and sub-grain size for the alloy's final microstructure gradually increase. The recrystallized grain size and fraction increase as the solution temperature rises, although the sub-grain size of the final microstructure of the corresponding alloy changes slightly. Fitting is used to deriving the function of recrystallization size, recrystallization fraction, and sub-grain size as a function of deformation temperature. The tensile properties of the alloy at T6 state are the best after deformation at 400°C and solution treatment at 470°C. The brittle fracture mode is shown in recrystallized grains, whereas the toughness fracture mode is shown in sub-grains.

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Periodical:

Key Engineering Materials (Volume 921)

Pages:

85-92

DOI:

https://doi.org/10.4028/p-5a3ua9

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Online since:

May 2022

Authors:

Guo Hui Shi*, Hong Wei Yan, Ming Yang Yu, Kai Zhu, Guan Jun Gao

Keywords:

Al-Zn-Mg-Cu Alloy, Deformation Temperature, Grain Characteristic, Mechanical Property, Solution Temperature

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