Effects of extrusion parameters and post-heat treatments on microstructures and mechanical properties of extrusion weld seams in 2195 Al-Li alloy profiles

Xu, Xiang; Zhao, Guoqun; Yu, Shubin; Wang, Yong-Xiao; Chen, Xiaoxue; Zhang, Wendong

doi:10.1016/j.jmrt.2019.12.095

Cited by 32 publications

(2 citation statements)

References 42 publications

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“…Chen et al [4] studied the evolution of the second phase distribution, grain morphology, size, and texture at the longitudinal weld of an Al-Zn-Mg alloy with different solution times. Xu et al [3,17,18] found that abnormal grain growth in the weld seam of Al-Li aluminum alloy led to precipitated phases coarsening, precipitating, PFZ widening, and a sharp decrease of elongation during aging.…”

Section: Introductionmentioning

confidence: 99%

Influence of Artificial Aging Time on Microstructures and Mechanical Properties of Porthole Die Extruded 6063 Aluminum Alloy

Li,

Shen,

Guo

et al. 2023

Metals

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The influence of artificial aging time on the microstructures and mechanical properties of the 6063 aluminum alloy profile extruded by porthole die was investigated through hardness testing, expansion testing, scanning electron microscope (SEM), and transmission electron microscope (TEM). The results showed that the artificial aging time had a significant impact on the size, morphology, distribution of precipitated phases, and mechanical properties of the porthole die extruded 6063 aluminum alloy profiles. As the artificial aging time increased, the second phase particles gradually precipitated, and the precipitation strengthening gradually enhanced, resulting in an increase in the hardness of the profile. The hardness of the welding zone was lower than that of the matrix zone. Compared with the precipitation in the matrix zone, the size and distribution of the precipitates were uneven, and the time for the precipitation was long in the welding zone due to the influence of grain size. The width of the precipitate free zone (PFZ) in the welding zone was greater than that in the matrix zone. The expansion ratio decreased with the increase of aging time, which indicated that the artificial aging treatment was adverse to the plastic deformation ability of the profiles.

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Section: Introductionmentioning

confidence: 99%

Influence of Artificial Aging Time on Microstructures and Mechanical Properties of Porthole Die Extruded 6063 Aluminum Alloy

Li,

Shen,

Guo

et al. 2023

Metals

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show abstract

“…Numerous studies have been reported on its treatment conditions, processing techniques, microstructure, and mechanical properties. For example, Wang et al [4,[11][12][13] investigated the extrusion process parameters of Al-Li 2195, its post-heat treatment, aging effects on its microstructure, mechanical properties, and corrosion behavior of spray-formed 2195 Al-Li alloy. Yang et al [14] reported that laser shock peening is an effective technique to refine the grain size of forged AA2195 alloy, improve its hardness, and enhance the stress corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of extruded spray-forming 2195-T6 Al-Li alloy at different loads using pin-on-disk tribotester

Chen

et al. 2022

Mater. Res. Express

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The tribological properties of Al-Li alloys impact the reliability of components used in different industrial sectors. In this research, the effect of normal load on friction and wear properties of the extruded spray-formed 2195-T6 Al-Li alloy is investigated by using a pin-on-disk tester. Through the microstructure of the friction subsurface, it is evaluated that the friction coefficient of 2195 alloy decreases from 0.408 to 0.306 by increasing load (25N to 150N), while the wear rate increases exponentially. It is also analyzed that a mild-severe wear transition occurs between 100N and 125N and the main wear mechanism gradually shifts from abrasive wear and oxidative wear to delamination wear (25N~100N), and finally attains the state of severe plastic deformation (125N~150N). Under the action of normal load and friction shearing force, the deformation layer in the subsurface increases from 3μm to 43μm with increasing load, and the accumulation of strain leads to cracks and holes.

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A novel protection-type porthole die for manufacturing multi-cavity and thin-walled extrusion profile: numerical simulation, optimization design, and experimental validation

Wang

Sun

Liu

et al. 2021

Int J Adv Manuf Technol

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Effects of extrusion parameters and post-heat treatments on microstructures and mechanical properties of extrusion weld seams in 2195 Al-Li alloy profiles

Cited by 32 publications

References 42 publications

Influence of Artificial Aging Time on Microstructures and Mechanical Properties of Porthole Die Extruded 6063 Aluminum Alloy

Influence of Artificial Aging Time on Microstructures and Mechanical Properties of Porthole Die Extruded 6063 Aluminum Alloy

Tribological behavior of extruded spray-forming 2195-T6 Al-Li alloy at different loads using pin-on-disk tribotester

A novel protection-type porthole die for manufacturing multi-cavity and thin-walled extrusion profile: numerical simulation, optimization design, and experimental validation

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