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The Evolution Of Al-Li Base Products For Aerospace And Space

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Additions of lithium to aluminium alloys decrease the density and increase the stiffness, thereby having a synergistic effect on the specific stiffness (E/ρ). Thus Al–Li alloy development may already be successful from an engineering property viewpoint—certainly with respect to equivalent conventional alloy products—if other properties are simply maintained.

Strengthening precipitates in 3rd-generation Al-Li alloys. | Download ...

The effect of temperature in range of 155–175 °C on the creep behavior, microstructural evolution, and precipitation of an Al-Cu-Li alloy was experimentally investigated during creep ageing deformation under 180 MPa for 20 h. Increasing temperature resulted in a noteworthy change in creep ageing behaviour, including a variation in creep curves, an Al–Li–Cu–Mg–Zr alloys are widely used in the aerospace industry for different applications and make an excellent concurrent to high-performance composites. This family of alloys has remarkable properties like low density, high elastic modulus, high strength and specific stiffness, fracture toughness, fatigue crack growth resistance, and improved corrosion resistance.

The Evolution of Al-Li Base Products for Aerospace and Space Applications ROBERTO J. RIOJA and JOHN LIU A technical review of the physical, mechanical, and metallurgical variables that have inuenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of dierent alloys is discussed. The structural and engineering property requirements for widespread deployment of aluminium-lithium (Al-Li) alloys in aircraft are discussed, particularly with respect to commercial transport aircraft. The development of Al-Li alloys has been driven mainly by the fact that additions of lithium to aluminium alloys lowers the density and increases the elastic modulus, thereby

Additive manufacturing of binary Al-Li alloys

The Evolution of Al-Li Base Products for Aerospace and Space Applications Article Full-text available Sep 2012 The Evolution of Al-Li Base Products for Aerospace and Space Applications Roberto J. Rioja, John Liu +1 more Alcoa – 31 Mar 2012

R. J. Rioja and J. Liu, The evolution of Al-Li base products for aerospace and space applications, Metallurgical & Materials Transactions A: Physical Metallurgy and Materials Science, 43 (9) (2012) 3325–3337.

Al–Li alloy is a new structural material with the advantages of lightweight and high strength. The extrusion profiles of Al–Li alloy are widely used in aerospace and other fields, which can significantly reduce the weight of the aerospace equipment and improve their carrying capacity and service performance. Particular service conditions of structural components in aeronautical For several decades, Al–Li alloys have been projected as one of the potential candidates for application in aerospace [1,2]. Due to the excellent combination of high strength and lower density, these alloys have potential for being used in the manufacture of many aerospace components and structures, for example, upper wing, lower wing, fuselage in

After a description of the evolution of Al-Li alloys, this paper first reviews the subject of anisotropy in mechanical properties of Al-Li wrought products. In plane, through thickness and axisymmetric flow anisotropies present in Al-Li wrought products are defined. The root causes for these anisotropies are discussed. Pros and cons arising from anisotropic products are then By Michael Niedzinski, Constellium. During the past 60 years the National Aeronautics and Space Administration (NASA) charted the western The Evolution of Al-Li Base Products for Aerospace and Space Applications. Metallurgical and Materials Transactions A, 43 (9), 3325–3337. doi:10.1007/s11661-012-1155-z

The shortcomings of a 2nd generation Al-Li alloys are introduced and the key alloy design principles used to overcome these are discussed. Finally, the performance parameters that play a major role in sizing several aircraft and space craft components are reviewed in a chronological perspective and compared with 3rd-generation Al-Li alloys. 摘要： A technical review of the physical, mechanical, and metallurgical variables that have influenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of different alloys is discussed. Then, the microstructural features responsible for different mechanical properties are identified and discussed. The role of alloying additions is

Aerostructural Design and Its Application to Aluminum–Lithium Alloys

The tensile properties of 2297-T87 Al–Li alloy thick plates at different thickness position and in different direction were analyzed via tensile testing, optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and transmission electron microscopy (TEM). Results indicated that the ultimate tensile

After a description of the evolution of Al-Li alloys, this paper first reviews the subject of anisotropy in mechanical properties of Al-Li wrought products. In plane, through thickness and axisymmetric flow anisotropies present in Al-Li wrought products are defined. The root causes for these anisotropies are discussed. Pros and cons arising from anisotropic

The Evolution of Al-Li Base Products for Aerospace and Space Applications Roberto J. Rioja John Liu OriginalPaper 31 March 2012 Pages: 3325 – 3337 Ti is regarded as one of the promising grain refiners in cast Al-Li-Cu alloys, but few research works have been done on its independent role. In this study, the effect of Ti on the microstructure evolution and mechanical properties of cast Al-2Li-2Cu-0.5Mg base alloy was investigated. The results revealed that the grains can be prominently refined with the increase

The Evolution of Al-Li Base Products for Aerospace and Space Applications. Metall and Mat Trans A 2012;43:3325–37. [12] Ullsperger T, Matthäus G, Kaden L, Seyfarth B, Liu D, Rettenmayr M, Nolte S. Laser assisted powder bed fusion of hypereutectic Al-Si using ultra-short laser pulses at different pulse durations (Conference

The Evolution of Al-Li Base Products for

Supporting: 2, Mentioning: 254 – The Evolution of Al-Li Base Products for Aerospace and Space Applications – Rioja, R. J., Liu, John

A technical review of the physical, mechanical, and metallurgical variables that have influenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of different alloys is discussed. Then, the microstructural features responsible for different mechanical properties are identified and discussed. The role of alloying additions is As a response to these various needs, Hoogovens Aluminium is active in three major development areas for the aerospace market. These are the development of new high strength thick plate products for large machined structure, the development of very large fuselage skin sheets with improved damage tolerant properties and the development of new light-weight

本工作采用一种Al-Cu合金丝材与Al-Li二元合金粉末同步输送的电弧增材制造方法，成功制备了Al-Cu-Li合金试样。 利用OM、SEM、XRD、TEM和Vickers硬度仪对试样的晶粒形貌、物相组成进行表征并测量硬度。 Al–Li alloys, characterized by their lightweight and high strength, are essential structural materials in aerospace industry. Unraveling the atomic mechanisms that enhance the modulus of Al–Li alloys is key to developing the next-generation alloys. Utilizing first-principles methods, we systematically explored the influence of alloying elements on mechanical

A technical review of the physical, mechanical, and metallurgical variables that have influenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of different alloys is discussed. Then, the microstructural features responsible for different mechanical properties are identified and discussed. The role of alloying additions is discussed.

Request PDF | On Mar 1, 2025, Guang-jun Zeng and others published Enhanced fatigue crack propagation resistance of Al-Cu-Li alloys via regulating grain structure and precipitation behavior | Find

The evolution of Al-Li base products for aerospace and space applications Materials and Design: The Art and Science of Material Selection in Product Design Status and prospects for aluminium-lithium alloys in aircraft structures Aerostructural design and its application to aluminum–lithium alloys

The Evolution of Al-Li Base Products for Aerospace and Space Applications ROBERTO J. RIOJA and JOHN LIU A technical review of the physical, mechanical, and metallurgical variables that have inuenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of dierent alloys is discussed. Then, the microstructural features responsible The Evolution of Al-Li Base Products for Aerospace and Space Applications Article Full-text available Sep 2012

Therefore, this article reviews the progress and applications of Al alloys commonly used in aerospace. The common strengthening methods and advanced manufacturing and processing technologies of Al alloy are also discussed, which can provide references for the development of advanced high–performance aviation Al alloys in the future.

摘要： A technical review of the physical, mechanical, and metallurgical variables that have influenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of different alloys is discussed. Then, the microstructural features responsible for different mechanical properties are identified and discussed. The role of alloying additions is Binary Al–Li alloys develop high strength during low-temperature ageing treatments with the formation of the δ0-Al3Li phase. The first Al–Li parts used in an aerospace application were

Microstructural improvement of Al-Cu-Li alloys with high Li content plays a critical role for the acquisition of excellent mechanical properties and ultra-low density. In this regard, the Al-Cu-Li alloy castings with high Li content from 1.5wt.% to 4.5wt.% were prepared by near-rapid solidification, followed by two-stage homogenization treatment (490 °C/16 h and 530 °C/16 h). 2195 aluminum-lithium alloy has numerous applications in industrial production, and the different initial heat treatment state impacts its hot deformation behavior. Therefore, this work seeks to examine the impact of heat treatment states on the microstructure development and deformation behavior of 2195 Al-Li alloys. The experiments have been carried out on a Gleeble Aluminium–lithium alloys (Al–Li alloys) are a set of alloys of aluminium and lithium, often also including copper and zirconium. Since lithium is the least dense elemental metal, these alloys are significantly less dense than aluminium. Commercial Al–Li

The aerospace and automotive industry is in dire need of lightweight components. Aluminum (Al) alloys have long been considered the best material for aircraft as well as automotive structural elements. Al alloys are lighter overall and provide improved fuel economy and load capacity when used in airplane as well as automotive construction because they have

While pre-deformation is often conducted before aging treatment to increase the strength and microhardness of 2195 Al-Li alloy, it often increases the fatigue crack growth (FCG) rate and thus reduces the fatigue life of the alloy. To determine the effects and causes of pre-deformation and heat treatment on the mechanical properties and FCG rate of 2195 Al-Li alloy,