Effects of enhanced solution treatment on microstructure and mechanical properties of Al–Cu–Li–Sc alloy

Yang, Ruibin; Zhi, Qian; Wang, Feizhou; Yun-jie, Zhang; Liu, Zhongxia; Wang, Jiefang; Tan, Xinrong; Chen, Yadong; Cao, Yulian

doi:10.1080/02670836.2018.1435482

Cited by 6 publications

(1 citation statement)

References 33 publications

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“…EDS results of the phases indicated in Figure 5 (in wt %). [21][22][23]29]. During the homogenization and solid solution treatment, most of this AlCu phase dissolves into the matrix and leads to the increase of Cu, Sc, Zr, Mn Fe content in the matrix.…”

Section: The Effect Of Cu Content On the Sem Microstructurementioning

confidence: 99%

Creep Behavior and Microstructural Evolution of Al–Cu–Mg–Ag Alloys with Various High Cu Contents

Peng

Wang

Yang

et al. 2021

Metals

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The creep behavior and microstructural evolution of three Al–Cu–Mg–Ag alloys with Cu content around its solid solubility limit in Al (5.65 wt %) were investigated at 180–240 °C and applied stress of 150–300 MPa. The creep resistance of aged alloy, which is mainly determined by the number density of Ω phase, is the best for 6.00 wt % Cu, better for 5.30 wt % Cu, and the worst for 5.65 wt % Cu. After solid-solution treatment, the lowest Cu content in the Al matrix for the alloy with 5.65 wt % Cu is observed due to the existence of more residual phases. It results in the lowest number density of Ω phase the following aging and poor creep resistance. Increasing temperature from 180 to 240 °C at the same stress (225 MPa), the steady creep rate of alloys increases by 225 times, which is apparently larger than that (26 times) for increasing stress from 225 to 300 MPa at the same temperature (180 °C). It indicates that the coarsening of the Ω phase with increasing temperature should be more serious than that with increasing stress. The creep mechanism of Al–Cu–Mg–Ag alloy can be attributed to the dislocation climb with the existence of threshold stress.

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Section: The Effect Of Cu Content On the Sem Microstructurementioning

confidence: 99%

Creep Behavior and Microstructural Evolution of Al–Cu–Mg–Ag Alloys with Various High Cu Contents

Peng

Wang

Yang

et al. 2021

Metals

Self Cite

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Effect of different aging processes on the corrosion behavior of new Al–Cu–Li–Zr–Sc alloys

Peng

Pan

Cai

et al. 2019

Materials & Corrosion

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The intergranular corrosion and exfoliation corrosion behaviors of Al-Cu-Li-Zr-Sc alloys under different aging effects, such as single-stage aging, strain aging, and double-stage aging, were studied. Among the three aging treatments, single-stage aging resulted in the best resistance to corrosion, followed by double-stage aging; strain aging resulted in the worst corrosion resistance. A 3.5% precooling strain could increase the dislocation density, which promoted the precipitation of corrosion-prone T 1 phase and increased the corrosion driving force of the alloy. Double-stage aging made the precipitated T 1 phases finer and more uniform and reduced the number of equilibrium phases at grain boundaries, thus improving the corrosion properties of the alloy. The corrosion susceptibility of the alloy was attributed to the T 1 phase and precipitate-free zone (PFZ), and the underlying corrosion mechanism was revealed as preferential dissolution of the equilibrium phase at grain boundaries and its surrounding distortion zone, followed by expansion of the PFZ along the grain boundaries, resulting in the development of corrosion from the grain boundaries to the intragranular regions. K E Y W O R D SAl-Cu-Li alloys, corrosion, double-stage aging, single-stage aging, strain aging

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Progress in characterization methods for thermoplastic deforming constitutive models of Al–Li alloys: a review

Zhang

Chen

2020

J Mater Sci

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Effects of enhanced solution treatment on microstructure and mechanical properties of Al–Cu–Li–Sc alloy

Cited by 6 publications

References 33 publications

Creep Behavior and Microstructural Evolution of Al–Cu–Mg–Ag Alloys with Various High Cu Contents

Creep Behavior and Microstructural Evolution of Al–Cu–Mg–Ag Alloys with Various High Cu Contents

Effect of different aging processes on the corrosion behavior of new Al–Cu–Li–Zr–Sc alloys

Progress in characterization methods for thermoplastic deforming constitutive models of Al–Li alloys: a review

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