Mechanical Properties and Corrosion Behavior of Spray-Formed 7075 Alloy with One-Stage Aging

Su, Ruiming; Liu, Tong; Qu, Yingdong; Bai, Guang Zhao; Li, Rongde

doi:10.1007/s11665-019-03997-1

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…Most grains distribute as the morphology of near-spherical, which can efficiently reduce the stress concentration. However, due to the low atomization gas pressure and low spray distance, the grain size is larger than that of conventional spray forming [5]. And the grain boundaries show the morphology of coarse.…”

Section: Resultsmentioning

confidence: 95%

“…Well known researches have been directed toward producing primary Al-Zn-Mg-Cu products of segregation-free, fine and dense, with the object of obtaining excellent properties [3]. Many routes have been developed for the manufacturing of Al-Zn-Mg-Cu alloys, but their most working on the defects of porosity, non-uniform, coarse dendrite, and element segregation has been achieved only through postprocessing [4,5]. To date, attention has been focused on the rapid solidification (RS) of atomization by a high-speed inert gas, coupled with the postprocessing of hot press working, such as hot extrusion [6].…”

Section: Introductionmentioning

confidence: 99%

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Direct continuous manufacturing Al–Zn–Mg–Cu alloy from a novel technology of spray-conform

Chen¹,

Yin

Zhong

et al. 2020

Eng. Res. Express

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A novel technology of Spray-Conform (SC) directly combines spraying deposition with continuous extrusion into one process. The Al-Zn-Mg-Cu alloys were prepared by SC continuously. The microstructures of the fabricated Al-Zn-Mg-Cu alloys were studied through OM, SEM and STEM, the mechanical properties were summarized by tensile tests, and the electrical conductivity was measured to reflect corrosion resistance. The results revealed that the materials prepared by SC showed a fine and uniform microstructure. In particular, the grain size distributes in 1-2 μm before heat treatment. And the samples exhibited a better combination of mechanical properties and stress corrosion after RRA.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Direct continuous manufacturing Al–Zn–Mg–Cu alloy from a novel technology of spray-conform

Chen¹,

Yin

Zhong

et al. 2020

Eng. Res. Express

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show abstract

“…It is common belief that the continuous grain boundary precipitates (GBP) are harmful to corrosion properties of the alloy [25,26]. The continuous GBP is preferentially dissolved as anodes in anodic dissolution.…”

Section: Intergranular Corrosionmentioning

confidence: 99%

Nanostructured phases, mechanical properties, exfoliation and intergranular corrosion behaviours of 7075 Al–Zn–Mg–Cu alloy–Effect of one-stage and two-stage aging processes

Ngo

Nguyen

Phung

et al. 2020

Adv. Nat. Sci: Nanosci. Nanotechnol.

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The control of the aging conditions for the aluminium alloys has been considered as an effective strategy to improve the properties of the alloy, especially in enhancement of the corrosion resistance. In this study, a detailed investigation of the effect of one-stage (T6) and two-stage (T76x) aging temper on mechanical properties, exfoliation and intergranular corrosion behaviours of 7075 Al–Zn–Mg–Cu alloy was implemented. Microstructures of the aged alloys were observed by optical microscopy and scanning electron microscopy (SEM), exfoliation and intergranular corrosion behaviours were investigated according to ASTM G34-2001 and ASTM G110-1992, respectively; the mechanical properties of the aged alloys were determined followed the standard methods. The microstructures of the sample aged with the T6 temper showed the finer particle size of precipitates than that of obtained from T76x tempers. Additionally, while the T6-aged sample revealed no appearance of the Precipitate Free Zones (PFZ), the PFZ with 40–50 nm in width was observed in the alloys treated with T76x tempers. The mechanical properties of the sample aged with T76x temper were negligibly reduced comparing to that of obtained with T6 temper, however, the exfoliation and intergranular corrosion behaviours were significantly improved by using two-stage aging conditions. The mechanism in enhancement of the corrosion resistance of the alloys treated with T76x temper over T6 temper was also discussed.

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Effect of Non-isothermal Cooling Aging on the Microstructure and Properties of Al-Zn-Mg-Cu Alloys

Wang,

Su,

Jin

et al. 2024

JOM

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Mechanical Properties and Corrosion Behavior of Spray-Formed 7075 Alloy with One-Stage Aging

Cited by 8 publications

References 27 publications

Direct continuous manufacturing Al–Zn–Mg–Cu alloy from a novel technology of spray-conform

Direct continuous manufacturing Al–Zn–Mg–Cu alloy from a novel technology of spray-conform

Nanostructured phases, mechanical properties, exfoliation and intergranular corrosion behaviours of 7075 Al–Zn–Mg–Cu alloy–Effect of one-stage and two-stage aging processes

Effect of Non-isothermal Cooling Aging on the Microstructure and Properties of Al-Zn-Mg-Cu Alloys

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