Effect of structure and properties of aluminium-lithium alloy welded joints produced by argon-arc and friction stir welding methods

Markashova, L.I.; Poklyatsky, A.G.; Kushnaryova, O.S.

doi:10.15407/tpwj2016.06.14

Cited by 3 publications

(1 citation statement)

References 1 publication

(1 reference statement)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Following the success of alloy 1420, the second generation of aluminum–lithium alloys was developed, including alloys 1430 and 1441 in the Al-Cu-Mg-Li system, alloys 1450, 1451, and 1460 in the Al-Cu-Li system, and alloy 1424 in the Al-Mg-Li system. The primary goal of these alloys was to offer a range of operational qualities, including improved fracture toughness, crack resistance, and corrosion resistance matching the level of alloy 1420 [ 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of Titanium Addition on Microstructure, Corrosion Resistance, and Hardness of As-Cast Al+6%Li Alloy

et al. 2023

View full text Add to dashboard Cite

Aluminum–lithium alloys have the potential for use in aerospace applications, and improving their physical, mechanical, and operational characteristics through alloying is a pressing task. Lithium, with a density of 0.54 g/cm3, enhances the elastic modulus of aluminum while reducing the weight of the resulting alloys, making them increasingly attractive. Adding transition metal additives to aluminum alloys enhances their strength, heat resistance, and corrosion resistance, due to their modifying effect and grain refinement. The study aimed to investigate the impact of titanium content on the microstructure, corrosion resistance, and hardness of Al-Li alloys. Four alloys were prepared with varying amounts of titanium at 0.05 wt%, 0.1 wt%, 0.5 wt%, and 1.0 wt%. The results showed that the microstructure of the alloy was modified after adding Ti, resulting in a decrease in average grain size to about 60% with the best refinement at 0.05 wt% Ti content. SEM and EDS analysis revealed an irregular net-shaped interdendritic microstructure with an observed microsegregation of Al3Li compounds and other trace elements at the grain boundaries. The samples showed casting defects due to the high content of Li in the alloy, which absorbed air during casting, resulting in casting defects such as shrinkage holes. The corrosion resistance test results were low for the samples with casting defects, with the least resistance recorded for a sample containing 0.1 wt% Ti content, with more casting defects. The addition of Ti increased the microhardness of the alloy to an average of 91.8 ± 2.8 HV.

show abstract

Section: Introductionmentioning

confidence: 99%

Impact of Titanium Addition on Microstructure, Corrosion Resistance, and Hardness of As-Cast Al+6%Li Alloy

et al. 2023

View full text Add to dashboard Cite

show abstract

Structure and service properties of welded joints of high-strength steels, aluminium and titanium alloys

Markashova¹,

Poznyakov²,

Berdnikova³

et al. 2017

Avtom. svarka (Kiev)

View full text Add to dashboard Cite

в работе использован структурно-аналитический подход к оценке влияния структурно-фазовых состояний на изменение наиболее значимых механических свойств исследуемых материалов. показана роль структурных факторов (типа легирования, фазового состава, величины зеренной, субзеренной структуры, распределения и плотности дислокаций, фазовых выделений, их размеров и характера распределения) в обеспечении оптимальных свойств сварных соединений и их эксплуатационной надежности. экспериментально-аналитическими оценками установлены структурно-фазовые параметры и факторы, обеспечивающие необходимый комплекс свойств сварных соединений. Библиогр. 20, табл. 2, рис. 12.

show abstract

Structure and service properties of welded joints of high-strength steels, aluminium and titanium alloys

Markashova¹,

Poznyakov²,

Berdnikova³

et al. 2017

The Paton Welding J.

View full text Add to dashboard Cite

In automation of consumable electrode arc welding it is necessary to have a clear knowledge about the structure of system for a self-regulation of the electrode melting rate. In the given work a general structure of this system is constructed on the basis of analytical description of dynamic processes, proceeding in the welding circuit. A simple structure analysis allows easy obtaining the necessary characteristics of the self-regulation system, including accuracy in a steady mode and time of optimizing the effect of disturbances. Criteria are suggested, that allow selecting those parameters of welding processes from the admissible values, which provide the desirable quick-response of the self-regulation system. Results of comparison of quick-response estimates, obtained by using these criteria, with results of computer modeling, are given. 21 Ref., 5 Figures. K e y w o r d s : robotic arc welding, consumable electrode, structure of self-regulation system, evaluation of accuracy and quick-response of system

show abstract

Effect of structure and properties of aluminium-lithium alloy welded joints produced by argon-arc and friction stir welding methods

Cited by 3 publications

References 1 publication

Impact of Titanium Addition on Microstructure, Corrosion Resistance, and Hardness of As-Cast Al+6%Li Alloy

Impact of Titanium Addition on Microstructure, Corrosion Resistance, and Hardness of As-Cast Al+6%Li Alloy

Structure and service properties of welded joints of high-strength steels, aluminium and titanium alloys

Structure and service properties of welded joints of high-strength steels, aluminium and titanium alloys

Contact Info

Product

Resources

About