High-strength structural silver-alloyed underdensity Al-Cu-Li-Mg alloy

Fridlyander, I. N.; Grushko, O. E.; Шамрай, В. Ф.; Клочков, Г Г

doi:10.1007/s11041-007-0049-y

Cited by 16 publications

(4 citation statements)

References 2 publications

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“…Most investigators point out that a small addition of Sc in Al alloy is benefit to the alloy's properties. It should be noted that the present tensile test tell that the alloy B incorporation of Sc additives owns reduced strengths and inferior elongation compared with the Sc-free alloy, although they have already satisfied the mechanical performance reported by Russia [9]. However, the content of Cu is more than Al and the amount of Sc rises up to ~4%, while the content of Sc in the continuous non-equilibrium phase is only below 1% and the Al content is higher than the copper content.…”

Section: Methodssupporting

confidence: 61%

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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Section: Methodssupporting

confidence: 61%

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

Jia

Zheng

Luo

2014

MSF

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“…Microstructural features of the materials were studied using electron transmission microscopes (TEM, Hillsboro, OR, USA) Tecnai G 2 30 Twin and Phillips CM30 Super Twin (Eindhoven, The Netherland) at accelerating voltages of 300 kV and JEM-200CX-at 160 kV. The study of the structure and the phase analysis were carried out by the TEM method using standard techniques of bright-field, dark-field images, and electron microdiffraction [27].…”

Section: Methodsmentioning

confidence: 99%

“…Most of these alloys are developed on the basis of the Al-Li-Cu system. In Russia, in VIAM, there also developed and introduced into practice the high-strength alloys 1461, 1469 [30][31][32][33][34], which are an alternative to the main structural alloys-of the Al-Cu-Mg and Al-Zn-Mg-Cu systems-of the types 2X24, 7075, and V95 [13,31]. Chronological analysis of the development of commercial alloys reveals the fundamental principles of their production.…”

Section: Classification Of Al-li-based Alloysmentioning

confidence: 99%

Multicomponent Aging Al-Li-Based Alloys of the Latest Generation: Structural and Phase Transformations, Treatments, Properties, and Future Prospects

et al. 2022

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An overview of modern material science problems is presented for ultralightweight high-modulus commercial Al-Li-based alloys in historical retrospect. Numerous particular examples of the Soviet and Russian aviation whose various designs were made of these alloys confirm their successful innovative potential. The key regularities of multicomponent alloying are discussed for the master alloys and modern commercial Al-Li-based alloys of the latest generation; the features typical of their microstructures, phase composition, and properties formed during aging are analyzed. The main mechanisms of phase formation are generalized for standard thermal and thermomechanical treatments. Recent original achievements have been obtained in designing of unique structural and phase transformations in these commercial alloys by means of methods of severe plastic deformations followed by heat treatment and storage. Using the example of three Russian commercial alloys of last generation, the basic principles of creating and controlling an ultrafine-grained structure, the origin and growth of stable nanophases of various types and chemical composition that determine the physicomechanical properties of alloys are established.

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“…So called dispersoids, i.e. the secondary precipitations formed in disruption of solid solutions by abnormally saturated transition metals, are also detected in alloys [1][2][3][4]. As the sensitivity of the standard X-Ray Phase Analysis (RPA) is 1 to 2 percent, the chemical or electrochemical methods of phase separation with matrix dissolution are used or method sensitivity is enhanced.…”

Section: Introductionmentioning

confidence: 99%

The Study of Ingots and Deformed Semi-Finished Products of Al-Mg-Sc and Al-Cu-Li Alloys Using Diffraction Methods

Ovsyannikov¹,

Чикова²,

Резник³

2016

MSF

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High-strength structural silver-alloyed underdensity Al-Cu-Li-Mg alloy

Cited by 16 publications

References 2 publications

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

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

Multicomponent Aging Al-Li-Based Alloys of the Latest Generation: Structural and Phase Transformations, Treatments, Properties, and Future Prospects

The Study of Ingots and Deformed Semi-Finished Products of Al-Mg-Sc and Al-Cu-Li Alloys Using Diffraction Methods

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