Evaluation of microstructure, damping capacity and mechanical properties of Al-35Zn and Al-35Zn-0.5Sc alloys

Jiang, Haojie; Liu, C.Y.; Chen, Y.; Yang, Z. X.; Huang, Hongfeng; Wei, Liang; Li, Y.B.; Qi, Haiquan

doi:10.1016/j.jallcom.2017.12.234

Cited by 44 publications

(6 citation statements)

References 42 publications

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“…In the previous study, it was found that the rolled binary Al-Zn alloy exhibited an excellent damping capacity [8,10,11]. The as-deformed Al-Zn alloys were always characterized by the structure of wetting Al/Zn interface and fine grains, corresponding to the excellent grain boundaries (GBs) sliding during deformation [12].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Jiang

Zhang

Liu

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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This study investigated the microstructure, mechanical, and damping properties of a non-age-hardened Al alloy (5086) and an age-hardened Al alloy (7075) after friction stir processing (FSP). Microstructural analyses indicate that FSP led the grain refinement of samples, and the grains size decreased with the decrease in the tool rotation rate. Furthermore, FSP with low rotation rate promotes the η phase precipitation in the 7075 alloy, causing the micron-sized particles in the 5086 alloy to break up. After being subjected to FSP with low rotation rate, the 5086 and 7075 alloys exhibited excellent mechanical and damping properties. Such improved properties were ascribed to their equilibrium grain boundaries, fine grain, low density of dislocations, high fraction of high misorientation angle, and uniform particle distribution.

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Section: Introductionmentioning

confidence: 99%

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Jiang

Zhang

Liu

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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“…Significant recrystallization suppression effect of Sc addition in aluminum alloys has been previously shown to arise from the precipitation of secondary Al 3 (Sc,Zr) particles formed during homogenization thermal treatment 16,29 . In 7085Sc alloy, Al 3 (Sc,Zr) particles in the matrix inhibited recrystallization during hot‐rolled deformation as well as solution treatment.…”

Section: Discussionmentioning

confidence: 99%

Microstructural and fatigue crack growth behavior inhomogeneity of trace Sc added 7085 alloy friction stir welded joint

Jia

Wei

Huang

et al. 2021

Fatigue Fract Eng Mat Struct

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The inhomogeneity of friction stir weld (FSW) joint of a 7085 Al‐based alloy containing trace Sc was investigated by comparing the hardening phase morphology, grain structure, mechanical properties, and fatigue crack growth (FCG) behavior in based metal (BM), heat‐affected zone (HAZ), and weld nugget zone (WNZ). The results showed that microstructural evolution during FSW was remarkably affected by Sc addition. The recrystallization and growth of grains in BM and HAZ were restrained by coherent Al3(Sc,Zr) particles. In HAZ, partially dissolution and slight growth of precipitates resulted in softening but contributed to enhance the FCG resistance according to shear mechanism. In WNZ, high frictional heating and intense plastic deformation induced recrystallization and supersaturated solid solution which decomposed to form new reprecipitates, including many new GPII zones, η′ phases, and some coarse η equilibrium phases attached to grown incoherent Al3(Sc,Zr). Owing to combined influences of fine random orientated grain structure and reprecipitates, WNZ possessed the best fatigue endurance.

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“…Significant recrystallization suppression effect of Sc addition in aluminium alloys has been previously shown to arise from the precipitation of second Al 3 (Sc,Zr) particles formed during homogenization thermal treatment [16,29]. In 7085Sc alloy, Al 3 (Sc,Zr) particles formed in the matrix and inhibited recrystallization during hot-rolled deformation as well as solution treatment.…”

Section: Effect Of Sc On Microstructure and Mechanical Propertiesmentioning

confidence: 99%

Microstructural and fatigue crack growth behavior inhomogeneity of trace Sc added 7085 alloy friction stir welded joint

Jia

Wei

Huang

et al. 2020

Preprint

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The inhomogeneity of friction stir weld (FSW) joint of a 7085 Al-based alloy containing trace Sc was investigated by comparing the hardening phase morphology, grain structure, mechanical properties and fatigue crack growth (FCG) behavior in based metal (BM), heat-affected zone (HAZ) and weld nugget zone (WNZ). The results showed that microstructural evolution during FSW was remarkably affected by Sc addition. The recrystallization and growth of grains in BM and HAZ were restrained by coherent Al3(Sc,Zr) particles. In HAZ, partially dissolution and slight growth of precipitates resulted in softening but contributed to enhance the FCG resistance according to shear mechanism. In WNZ, high frictional heating and intense plastic deformation induced recrystallization and supersaturated solid solution which decomposed to form new reprecipitates, including many new GPII zones, ' phases and some coarse equilibrium phases attached to grown incoherent Al3(Sc,Zr). Owing to combined influences of fine random orientated grain structure and reprecipitates, WNZ possessed the best fatigue endurance.

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Evaluation of microstructure, damping capacity and mechanical properties of Al-35Zn and Al-35Zn-0.5Sc alloys

Cited by 44 publications

References 42 publications

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Mechanical and Damping Behavior of Age-Hardened and Non-age-hardened Al Alloys After Friction Stir Processing

Microstructural and fatigue crack growth behavior inhomogeneity of trace Sc added 7085 alloy friction stir welded joint

Microstructural and fatigue crack growth behavior inhomogeneity of trace Sc added 7085 alloy friction stir welded joint

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