Effect of multi-stage solution and aging process on microstructure and properties of Al-11.2Zn-3.0Mg-1.3Cu-0.2Zr aluminum alloy extrusion

Xu, Xiaojing; Mao, Qiang; Jiang, Zhi; Tabie, Vitus Mwinteribo; Zhang, Tianci; Jia, Wenxiao; Zhu, Chenyu; Wang, Hao

doi:10.1016/j.matlet.2019.07.082

Cited by 23 publications

(3 citation statements)

References 7 publications

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“…During the solid solution process, the grain size, undissolved second phase fraction and solute atom distribution of the alloy will be changed, which affects the mechanical properties. Xu et al [103] performed multi-stage solid solution on aluminum alloy extrusion materials and characterized and tested their microstructure and mechanical properties. The specific solid solution process is shown in Figure 10a.…”

Section: Solid Solutionmentioning

confidence: 99%

The Advancement of 7XXX Series Aluminum Alloys for Aircraft Structures: A Review

Zhou

Liu

Zhang

2021

Metals

163

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7XXX series aluminum alloys (Al 7XXX alloys) are widely used in bearing components, such as aircraft frame, spars and stringers, for their high specific strength, high specific stiffness, high toughness, excellent processing, and welding performance. Therefore, Al 7XXX alloys are the most important structural materials in aviation. In this present review, the development tendency and the main applications of Al 7XXX alloys for aircraft structures are introduced, and the existing problems are simply discussed. Also, the heat treatment processes for improving the properties are compared and analyzed. It is the most important measures that optimizing alloy composition and improving heat treatment process are to enhance the comprehensive properties of Al 7XXX alloys. Among the method, solid solution, quenching, and aging of Al 7XXX alloys are the most significant. We introduce the effects of the three methods on the properties, and forecast the development direction of the properties, compositions, and heat treatments and the solution to the corrosion prediction problem for the next generation of Al 7XXX alloys for aircraft structures. The next generation of Al 7XXX alloys should be higher strength, higher toughness, higher damage tolerance, higher hardenability, and better corrosion resistance. It is urgent requirements to develop or invent new heat treatment regime. We should construct a novel corrosion prediction model for Al 7XXX alloys via confirming the surface corrosion environments and selecting the accurate and reliable electrochemical measurements.

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Section: Solid Solutionmentioning

confidence: 99%

The Advancement of 7XXX Series Aluminum Alloys for Aircraft Structures: A Review

Zhou

Liu

Zhang

2021

Metals

163

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“…The formation of superfine crystals and uniform secondary phases during extrusion results in exceptional mechanical properties, attributed to the combined strengthening mechanisms of grain boundary reinforcement and precipitation hardening. Xu et al carried out multistage solution aging treatment on extruded Al-11.2Zn-3.0Mg-1.3Cu-0.2Zr aluminum alloy, and the results proved that with increases in the solution time and temperature, the strength of the alloy showed a trend of first increasing and then decreasing [19]. This is mainly because the size of precipitated phase coarsens with further aging, which reduces the dispersion degree of the precipitated phase, and thus, reduces the strength of the alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Multistage Solution Aging Heat Treatment on Mechanical Properties and Precipitated Phase Characteristics of High-Strength Toughened 7055 Alloy

Li,

Zhang,

Guo

et al. 2024

Materials

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In this paper, a one-step hot extrusion dual-stage solution treatment method is employed to fabricate high-strength and tough T-shaped complex cross-section 7055 (Al-Zn-Mg-Cu-Zr) alloy profiles, and a detailed investigation is conducted on the microstructure and mechanical properties. The results indicate that the comprehensive mechanical properties of the 7055 aluminum extruded alloy using the two-stage solution aging treatment are excellent. This is particularly evident in the balance between strength and ductility, where outstanding strength is accompanied by a plasticity that is maintained at 13.2%. During the extrusion process, the deformation textures are mainly composed of brass and copper, forming a 15.1% recrystallization texture Cube. In addition, the equilibrium phase η(MgZn2) precipitated in the grain is the main strengthening phase, and there are large discontinuous grain boundary precipitates at the grain boundary, which hinders the grain boundary dislocation movement and has great influence on the mechanical properties of alloy materials.

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“…Different plates with different degrees of deformation exhibit contrasting extents of mechanical anisotropy [7][8][9][10][11]. Texture type and orientation density are the main factors that affect mechanical anisotropy, and texture evolution will occur in the process of solution treatment [12][13][14][15]. Thus, it is crucial to observe the relationship between the texture and mechanical anisotropy in different solid solution stages [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Initial Texture, Recrystallization and Re-Dissolution Process on the Evolution of Texture during Solution Treatment of the 7A65 Hot Rolled Plate

Wang

et al. 2021

Metals

Self Cite

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The evolution of textures, the degree of recrystallization and the mechanical properties of 7A65 hot rolled plates during re-dissolution were studied with different thicknesses (25 mm, 65 mm, 120 mm) and different degrees of deformation. It was found that different plates exhibited different trends of re-dissolution because the degrees of deformation increased and the degrees of recrystallization were different during the solution treatment. With the increase of deformation and static recrystallization degrees, texture types changed from Cube, R-Cube to Brass, R, Cube and Copper during the re-dissolution process. The value of the Schmid factor (µ(-)) was calculated and the value along the rolling direction was significantly larger than along the transverse direction, which led to a lower yield strength along the rolling direction. In terms of the average contribution of the yield strength, the strengthening of the grain boundary including LAGBs (low-angle grain boundaries) was found to play a more significant role than the effect of solid atoms and dislocation densities. Therefore, the 25 mm plate exhibits the best mechanical properties, with a yield strength of 565.7 MPa along the rolling direction.

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Effect of multi-stage solution and aging process on microstructure and properties of Al-11.2Zn-3.0Mg-1.3Cu-0.2Zr aluminum alloy extrusion

Cited by 23 publications

References 7 publications

The Advancement of 7XXX Series Aluminum Alloys for Aircraft Structures: A Review

The Advancement of 7XXX Series Aluminum Alloys for Aircraft Structures: A Review

Effect of Multistage Solution Aging Heat Treatment on Mechanical Properties and Precipitated Phase Characteristics of High-Strength Toughened 7055 Alloy

Effect of the Initial Texture, Recrystallization and Re-Dissolution Process on the Evolution of Texture during Solution Treatment of the 7A65 Hot Rolled Plate

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