Effect of Powerful Current Pulses on the Structure and Mechanical Properties of the Aluminum Alloy Al-6%Mg-0.6%Mn

Valeev, I. Sh.; Barykin, N. P.; Trifonov, V. G.; Valeeva, A. Kh.

doi:10.1361/10599490523265

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Al 6 Mn does not affect the width of PFZ and can increase the maximum tensile strength, fracture toughness, and simultaneously improve the low cyclic fatigue performance. Valeev SH I et al [ 28 ] pointed out that excessive Mn content would lead to the emergence of Al 20 Cu 2 Mn 3 and other second-phase compounds in aluminum alloys, which reduced the number of strengthening elements and strengthening phases in aluminum alloys, and the quenching sensitivity increased with the excess level of Mn content.…”

Section: Micro-alloyingmentioning

confidence: 99%

Review on Micro-Alloying and Preparation Method of 7xxx Series Aluminum Alloys: Progresses and Prospects

2022

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Notably, 7xxx series aluminum alloy has become the most popular nonferrous alloy, extensively used in industry, construction and transportation trades, due to its high comprehensive properties such as high static strength, high strength, heat resistance, high toughness, damage resistance, low density, low quenching sensitivity and rich resource. The biggest challenge for aluminum alloy today is to greatly improve the corrosion resistance of the alloy, while maintaining its strength. The preparation method of 7xxx series aluminum alloy requires controlling time lapses in the process of heating, holding and cooling, and there are many species precipitates in the crystal, but the precipitated strengthening phase is a single type of equilibrium η′ phase. Therefore, more attention should be paid to how to increase the volume fraction of η′ precipitates and modify the comprehensive performance of the material and focus more on the microstructure of the precipitates. This article reviews the progress of 7xxx series aluminum alloy materials in micro-alloying, aging precipitation sequence, the strengthening-toughening mechanism and the preparation method. The effect of adding trace elements to the microstructure and properties of 7xxx series aluminum alloy and the problems existing in aging precipitation characteristics and the reinforcement mechanism are discussed. The future development direction of 7xxx series aluminum alloy is predicted by developing a method for the process-microstructure-property correlation of materials to explore the characteristic microstructure, micro-alloying, controlling alloy microstructure and optimizing heat-treatment technology.

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Section: Micro-alloyingmentioning

confidence: 99%

Review on Micro-Alloying and Preparation Method of 7xxx Series Aluminum Alloys: Progresses and Prospects

2022

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“…SH I et al . [14] pointed out that excessive Mn content would lead to the emergence of Al20Cu2Mn3 and other second-phase compounds in aluminum alloys, which reduced the number of strengthening elements and strengthening phases in aluminum alloys, and the quenching sensitivity increased with the excess height Mn content.…”

Section: Zr and Mn Transition Elementsmentioning

confidence: 99%

Review On Progress of 7xxx Series Aluminum Alloy Materials

Dai¹,

Yan²,

Hao³

2021

Preprint

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Since the first generation of 7xxx superhard aluminum alloy was investigated in 1930, hitherto the fifth generation aluminum alloy materials with high comprehensive properties such as high static strength, high strength, heat resistance, high toughness, damage resistance, low density and low quenching sensitivity have been improved and developed. This paper reviews the progress of 7xxx aluminum alloy materials in composition, microstructure, properties, preparation methods, heat treatment strengthening and applications from 2014 to 2021. The effect of adding trace elements on microstructure and properties of 7xxx series alloy and the problems existing in aging precipitation characteristics and reinforcement mechanism are discussed. The future development direction of 7xxx superhard aluminum alloy is prospected by optimizing heat treatment technological, adding appropriate trace elements to alloy and controlling alloy microstructure.

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“…The effect of electric current on the structure and mechanical properties of metals and alloys has been actively studied for over 50 years and to date a number of significant results have been obtained [1][2][3][4][5][6][7][8][9][10][11][12]. For example, it has been reliably established that when a metal material is subjected to a straining, the simultaneously applied electric field can significantly change its deformation behavior, in particular, increase the creep rate, reduce the flow stress, and reduce strain hardening.…”

Section: Introductionmentioning

confidence: 99%

Structure and hardness of cold-rolled nickel after single and multiple electric pulse treatment

et al. 2019

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The structure and hardness of nickel Grade NP2 after rolling at room temperature with a strain of 90 % and subsequent electric pulse treatment with a calculated heating temperature of 550°C carried out 1 to 20 times with a pulse duration of 10 −4 s and intervals between the pulses of 2 min, were investigated. It has been established that electric pulse treatment activates the static recovery and recrystallization of the heavily deformed structure. After one current pulse, a partially recrystallized, and after 5 pulses, a completely recrystallized fine-grain structure with a grain size of 2 -4 μm was formed, whose subsequent transformation with number of pulses was accompanied by a slight normal grain growth. It was found that the transformation of the deformation structure of nickel was associated with the intense formation of annealing twins, the fraction of which in the grain boundary spectrum reached 45 % after 5 pulses and further scarcely changed. Such structural changes lead to a decrease in the hardness of the material from 225 to 110 HV followed by subsequent stabilization of its level under processing. The nature of the processes controlling the changes in the structure and hardness of nickel depending on the number of cycles of electric pulse treatment is discussed.

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Effect of Powerful Current Pulses on the Structure and Mechanical Properties of the Aluminum Alloy Al-6%Mg-0.6%Mn

Cited by 7 publications

References 3 publications

Review on Micro-Alloying and Preparation Method of 7xxx Series Aluminum Alloys: Progresses and Prospects

Review on Micro-Alloying and Preparation Method of 7xxx Series Aluminum Alloys: Progresses and Prospects

Review On Progress of 7xxx Series Aluminum Alloy Materials

Structure and hardness of cold-rolled nickel after single and multiple electric pulse treatment

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