Evolution of precipitates in AlLiCu and AlLiCuSc alloys after age-hardening treatment

Simmich, O.; Scholz, R.; Ciach, R.

doi:10.1016/s0921-5093(97)00229-3

Cited by 13 publications

(2 citation statements)

References 2 publications

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“…The addition of Sc has been reported to improve the properties of most of age hardenable aluminium alloys including binary or multicomponent Al-Li base alloys. 9,10 The previous research by the authors 11 showed that the addition of 0 . 1%Sc to Al-Cu-Li-Zr alloy increased the strength and ductility of the alloy.…”

Section: Introductionmentioning

confidence: 98%

Effect of predeformation on microstructure and mechanical properties of Al–Cu–Li–Zr alloy containing Sc

Liang¹,

Pan²,

Yun³

et al. 2007

Materials Science and Technology

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The effects of prior cold deformation on the microstructures and the room temperature mechanical properties of an Al-3 . 5Cu-1 . 5Li-0 . 22(SczZr) alloy have been observed by using TEM and tensile test at room temperature. The results show that the alloy has the character of aging hardening, and the major phase of precipitation and strengthening is T 1 phase. The result also show that prior cold deformation leads to more dispersive and uniform distribution of T 1 precipitations. It accelerates aging response, causes earlier aging peak occurrence, and enhances strength greatly. However, the plasticity of the alloy is declined with prior cold deformation. In contrast, excessive prior cold deformation causes coarsening and heterogeneous distribution of T 1 phase. It also reduces the strength of the alloy, therefore, influences the composite properties of the alloy. The favourable prior cold deformation is about 3 . 5% under the experimental condition.

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Section: Introductionmentioning

confidence: 98%

Effect of predeformation on microstructure and mechanical properties of Al–Cu–Li–Zr alloy containing Sc

Liang¹,

Pan²,

Yun³

et al. 2007

Materials Science and Technology

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“…However, Jostein Röyset [3] pointed out that the influence of Sc in more complex alloys is neutral and sometimes even negative. J.Dutkiewicz et.al [4] present a loss of coherency caused by δ′ precipitation on the Al 3 Sc particles which results in lack of hardening effects is due to Sc addition in AlLiCu alloys. There are other claims [5][6][7] that the use of Sc in 2xxx Al-Cu alloys tends to form coarse ternary AlCuSc particles (W phase).…”

Section: Introductionmentioning

confidence: 99%

Influence of AlCuSc Ternary Phase on the Microstructure and Properties of 1469 Alloy

Jia

Zheng

Luo

2014

MSF

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Microstructure evolution and mechanical properties of a 1469 alloy and a Sc-free1469 type alloy were examined. SEM observation indicates that AlCuSc ternary phases (W) are formed after homogenization annealing, and cannot be dissolved during the following heat treatments. These coarse particles consume abundant Cu atoms from the Al matrix that are available for solutioning, which results in the decrease of precipitation of the T1 phase during aging treatment. The W phase has negative effects on the examined alloy’s mechanical properties. The tensile strength of Sc-added alloy is 40MPa lower than that of the Sc-free alloy. The formation of the W phase has a close relationship with Cu/Sc ratio, which shows the importance of controlling the concentration of Cu and addition of Sc. Formation of W phase suppress the effect of precipitation hardening of the T1 phase in high strength Al-Cu-Li alloys

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Mechanical and metallurgical characterization of 8090 Al–Li alloy welded joints

Bonaccorsi¹,

Costanza

Missori

et al. 2012

Metallurgist

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Evolution of precipitates in AlLiCu and AlLiCuSc alloys after age-hardening treatment

Cited by 13 publications

References 2 publications

Effect of predeformation on microstructure and mechanical properties of Al–Cu–Li–Zr alloy containing Sc

Effect of predeformation on microstructure and mechanical properties of Al–Cu–Li–Zr alloy containing Sc

Influence of AlCuSc Ternary Phase on the Microstructure and Properties of 1469 Alloy

Mechanical and metallurgical characterization of 8090 Al–Li alloy welded joints

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